cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % % |
| 6 | % EEEEE FFFFF FFFFF EEEEE CCCC TTTTT % |
| 7 | % E F F E C T % |
| 8 | % EEE FFF FFF EEE C T % |
| 9 | % E F F E C T % |
| 10 | % EEEEE F F EEEEE CCCC T % |
| 11 | % % |
| 12 | % % |
| 13 | % MagickCore Image Effects Methods % |
| 14 | % % |
| 15 | % Software Design % |
| 16 | % John Cristy % |
| 17 | % October 1996 % |
| 18 | % % |
| 19 | % % |
cristy | 16af1cb | 2009-12-11 21:38:29 +0000 | [diff] [blame] | 20 | % Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 21 | % dedicated to making software imaging solutions freely available. % |
| 22 | % % |
| 23 | % You may not use this file except in compliance with the License. You may % |
| 24 | % obtain a copy of the License at % |
| 25 | % % |
| 26 | % http://www.imagemagick.org/script/license.php % |
| 27 | % % |
| 28 | % Unless required by applicable law or agreed to in writing, software % |
| 29 | % distributed under the License is distributed on an "AS IS" BASIS, % |
| 30 | % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| 31 | % See the License for the specific language governing permissions and % |
| 32 | % limitations under the License. % |
| 33 | % % |
| 34 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 35 | % |
| 36 | % |
| 37 | % |
| 38 | */ |
| 39 | |
| 40 | /* |
| 41 | Include declarations. |
| 42 | */ |
| 43 | #include "magick/studio.h" |
cristy | d43a46b | 2010-01-21 02:13:41 +0000 | [diff] [blame] | 44 | #include "magick/accelerate.h" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 45 | #include "magick/blob.h" |
| 46 | #include "magick/cache-view.h" |
| 47 | #include "magick/color.h" |
| 48 | #include "magick/color-private.h" |
| 49 | #include "magick/colorspace.h" |
| 50 | #include "magick/constitute.h" |
| 51 | #include "magick/decorate.h" |
| 52 | #include "magick/draw.h" |
| 53 | #include "magick/enhance.h" |
| 54 | #include "magick/exception.h" |
| 55 | #include "magick/exception-private.h" |
| 56 | #include "magick/effect.h" |
| 57 | #include "magick/fx.h" |
| 58 | #include "magick/gem.h" |
| 59 | #include "magick/geometry.h" |
| 60 | #include "magick/image-private.h" |
| 61 | #include "magick/list.h" |
| 62 | #include "magick/log.h" |
| 63 | #include "magick/memory_.h" |
| 64 | #include "magick/monitor.h" |
| 65 | #include "magick/monitor-private.h" |
| 66 | #include "magick/montage.h" |
cristy | 6771f1e | 2010-03-05 19:43:39 +0000 | [diff] [blame] | 67 | #include "magick/morphology.h" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 68 | #include "magick/paint.h" |
| 69 | #include "magick/pixel-private.h" |
| 70 | #include "magick/property.h" |
| 71 | #include "magick/quantize.h" |
| 72 | #include "magick/quantum.h" |
| 73 | #include "magick/random_.h" |
| 74 | #include "magick/random-private.h" |
| 75 | #include "magick/resample.h" |
| 76 | #include "magick/resample-private.h" |
| 77 | #include "magick/resize.h" |
| 78 | #include "magick/resource_.h" |
| 79 | #include "magick/segment.h" |
| 80 | #include "magick/shear.h" |
| 81 | #include "magick/signature-private.h" |
| 82 | #include "magick/string_.h" |
| 83 | #include "magick/thread-private.h" |
| 84 | #include "magick/transform.h" |
| 85 | #include "magick/threshold.h" |
| 86 | |
| 87 | /* |
| 88 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 89 | % % |
| 90 | % % |
| 91 | % % |
| 92 | % A d a p t i v e B l u r I m a g e % |
| 93 | % % |
| 94 | % % |
| 95 | % % |
| 96 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 97 | % |
| 98 | % AdaptiveBlurImage() adaptively blurs the image by blurring less |
| 99 | % intensely near image edges and more intensely far from edges. We blur the |
| 100 | % image with a Gaussian operator of the given radius and standard deviation |
| 101 | % (sigma). For reasonable results, radius should be larger than sigma. Use a |
| 102 | % radius of 0 and AdaptiveBlurImage() selects a suitable radius for you. |
| 103 | % |
| 104 | % The format of the AdaptiveBlurImage method is: |
| 105 | % |
| 106 | % Image *AdaptiveBlurImage(const Image *image,const double radius, |
| 107 | % const double sigma,ExceptionInfo *exception) |
| 108 | % Image *AdaptiveBlurImageChannel(const Image *image, |
| 109 | % const ChannelType channel,double radius,const double sigma, |
| 110 | % ExceptionInfo *exception) |
| 111 | % |
| 112 | % A description of each parameter follows: |
| 113 | % |
| 114 | % o image: the image. |
| 115 | % |
| 116 | % o channel: the channel type. |
| 117 | % |
| 118 | % o radius: the radius of the Gaussian, in pixels, not counting the center |
| 119 | % pixel. |
| 120 | % |
| 121 | % o sigma: the standard deviation of the Laplacian, in pixels. |
| 122 | % |
| 123 | % o exception: return any errors or warnings in this structure. |
| 124 | % |
| 125 | */ |
| 126 | |
| 127 | MagickExport Image *AdaptiveBlurImage(const Image *image,const double radius, |
| 128 | const double sigma,ExceptionInfo *exception) |
| 129 | { |
| 130 | Image |
| 131 | *blur_image; |
| 132 | |
| 133 | blur_image=AdaptiveBlurImageChannel(image,DefaultChannels,radius,sigma, |
| 134 | exception); |
| 135 | return(blur_image); |
| 136 | } |
| 137 | |
| 138 | MagickExport Image *AdaptiveBlurImageChannel(const Image *image, |
| 139 | const ChannelType channel,const double radius,const double sigma, |
| 140 | ExceptionInfo *exception) |
| 141 | { |
| 142 | #define AdaptiveBlurImageTag "Convolve/Image" |
| 143 | #define MagickSigma (fabs(sigma) <= MagickEpsilon ? 1.0 : sigma) |
| 144 | |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 145 | CacheView |
| 146 | *blur_view, |
| 147 | *edge_view, |
| 148 | *image_view; |
| 149 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 150 | double |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 151 | **kernel, |
| 152 | normalize; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 153 | |
| 154 | Image |
| 155 | *blur_image, |
| 156 | *edge_image, |
| 157 | *gaussian_image; |
| 158 | |
| 159 | long |
| 160 | j, |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 161 | k, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 162 | progress, |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 163 | u, |
| 164 | v, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 165 | y; |
| 166 | |
| 167 | MagickBooleanType |
| 168 | status; |
| 169 | |
| 170 | MagickPixelPacket |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 171 | bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 172 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 173 | register long |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 174 | i; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 175 | |
| 176 | unsigned long |
| 177 | width; |
| 178 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 179 | assert(image != (const Image *) NULL); |
| 180 | assert(image->signature == MagickSignature); |
| 181 | if (image->debug != MagickFalse) |
| 182 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 183 | assert(exception != (ExceptionInfo *) NULL); |
| 184 | assert(exception->signature == MagickSignature); |
| 185 | blur_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception); |
| 186 | if (blur_image == (Image *) NULL) |
| 187 | return((Image *) NULL); |
| 188 | if (fabs(sigma) <= MagickEpsilon) |
| 189 | return(blur_image); |
| 190 | if (SetImageStorageClass(blur_image,DirectClass) == MagickFalse) |
| 191 | { |
| 192 | InheritException(exception,&blur_image->exception); |
| 193 | blur_image=DestroyImage(blur_image); |
| 194 | return((Image *) NULL); |
| 195 | } |
| 196 | /* |
| 197 | Edge detect the image brighness channel, level, blur, and level again. |
| 198 | */ |
| 199 | edge_image=EdgeImage(image,radius,exception); |
| 200 | if (edge_image == (Image *) NULL) |
| 201 | { |
| 202 | blur_image=DestroyImage(blur_image); |
| 203 | return((Image *) NULL); |
| 204 | } |
| 205 | (void) LevelImage(edge_image,"20%,95%"); |
| 206 | gaussian_image=GaussianBlurImage(edge_image,radius,sigma,exception); |
| 207 | if (gaussian_image != (Image *) NULL) |
| 208 | { |
| 209 | edge_image=DestroyImage(edge_image); |
| 210 | edge_image=gaussian_image; |
| 211 | } |
| 212 | (void) LevelImage(edge_image,"10%,95%"); |
| 213 | /* |
| 214 | Create a set of kernels from maximum (radius,sigma) to minimum. |
| 215 | */ |
| 216 | width=GetOptimalKernelWidth2D(radius,sigma); |
| 217 | kernel=(double **) AcquireQuantumMemory((size_t) width,sizeof(*kernel)); |
| 218 | if (kernel == (double **) NULL) |
| 219 | { |
| 220 | edge_image=DestroyImage(edge_image); |
| 221 | blur_image=DestroyImage(blur_image); |
| 222 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 223 | } |
| 224 | (void) ResetMagickMemory(kernel,0,(size_t) width*sizeof(*kernel)); |
| 225 | for (i=0; i < (long) width; i+=2) |
| 226 | { |
| 227 | kernel[i]=(double *) AcquireQuantumMemory((size_t) (width-i),(width-i)* |
| 228 | sizeof(**kernel)); |
| 229 | if (kernel[i] == (double *) NULL) |
| 230 | break; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 231 | normalize=0.0; |
| 232 | j=(long) (width-i)/2; |
| 233 | k=0; |
| 234 | for (v=(-j); v <= j; v++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 235 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 236 | for (u=(-j); u <= j; u++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 237 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 238 | kernel[i][k]=exp(-((double) u*u+v*v)/(2.0*MagickSigma*MagickSigma))/ |
| 239 | (2.0*MagickPI*MagickSigma*MagickSigma); |
| 240 | normalize+=kernel[i][k]; |
| 241 | k++; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 242 | } |
| 243 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 244 | if (fabs(normalize) <= MagickEpsilon) |
| 245 | normalize=1.0; |
| 246 | normalize=1.0/normalize; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 247 | for (k=0; k < (j*j); k++) |
| 248 | kernel[i][k]=normalize*kernel[i][k]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 249 | } |
| 250 | if (i < (long) width) |
| 251 | { |
| 252 | for (i-=2; i >= 0; i-=2) |
| 253 | kernel[i]=(double *) RelinquishMagickMemory(kernel[i]); |
| 254 | kernel=(double **) RelinquishMagickMemory(kernel); |
| 255 | edge_image=DestroyImage(edge_image); |
| 256 | blur_image=DestroyImage(blur_image); |
| 257 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 258 | } |
| 259 | /* |
| 260 | Adaptively blur image. |
| 261 | */ |
| 262 | status=MagickTrue; |
| 263 | progress=0; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 264 | GetMagickPixelPacket(image,&bias); |
| 265 | SetMagickPixelPacketBias(image,&bias); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 266 | image_view=AcquireCacheView(image); |
| 267 | edge_view=AcquireCacheView(edge_image); |
| 268 | blur_view=AcquireCacheView(blur_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 269 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 270 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 271 | #endif |
| 272 | for (y=0; y < (long) blur_image->rows; y++) |
| 273 | { |
| 274 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 275 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 276 | |
| 277 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 278 | *restrict p, |
| 279 | *restrict r; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 280 | |
| 281 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 282 | *restrict blur_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 283 | |
| 284 | register long |
| 285 | x; |
| 286 | |
| 287 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 288 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 289 | |
| 290 | if (status == MagickFalse) |
| 291 | continue; |
| 292 | r=GetCacheViewVirtualPixels(edge_view,0,y,edge_image->columns,1,exception); |
| 293 | q=QueueCacheViewAuthenticPixels(blur_view,0,y,blur_image->columns,1, |
| 294 | exception); |
| 295 | if ((r == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 296 | { |
| 297 | status=MagickFalse; |
| 298 | continue; |
| 299 | } |
| 300 | blur_indexes=GetCacheViewAuthenticIndexQueue(blur_view); |
| 301 | for (x=0; x < (long) blur_image->columns; x++) |
| 302 | { |
| 303 | MagickPixelPacket |
| 304 | pixel; |
| 305 | |
| 306 | MagickRealType |
| 307 | alpha, |
| 308 | gamma; |
| 309 | |
| 310 | register const double |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 311 | *restrict k; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 312 | |
| 313 | register long |
| 314 | i, |
| 315 | u, |
| 316 | v; |
| 317 | |
| 318 | gamma=0.0; |
| 319 | i=(long) (width*QuantumScale*PixelIntensity(r)+0.5); |
| 320 | if (i < 0) |
| 321 | i=0; |
| 322 | else |
| 323 | if (i > (long) width) |
| 324 | i=(long) width; |
| 325 | if ((i & 0x01) != 0) |
| 326 | i--; |
| 327 | p=GetCacheViewVirtualPixels(image_view,x-((long) (width-i)/2L),y-(long) |
| 328 | ((width-i)/2L),width-i,width-i,exception); |
| 329 | if (p == (const PixelPacket *) NULL) |
| 330 | break; |
| 331 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 332 | pixel=bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 333 | k=kernel[i]; |
| 334 | for (v=0; v < (long) (width-i); v++) |
| 335 | { |
| 336 | for (u=0; u < (long) (width-i); u++) |
| 337 | { |
| 338 | alpha=1.0; |
| 339 | if (((channel & OpacityChannel) != 0) && |
| 340 | (image->matte != MagickFalse)) |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 341 | alpha=(MagickRealType) (QuantumScale*GetAlphaPixelComponent(p)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 342 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 343 | pixel.red+=(*k)*alpha*GetRedPixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 344 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 345 | pixel.green+=(*k)*alpha*GetGreenPixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 346 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 347 | pixel.blue+=(*k)*alpha*GetBluePixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 348 | if ((channel & OpacityChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 349 | pixel.opacity+=(*k)*GetOpacityPixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 350 | if (((channel & IndexChannel) != 0) && |
| 351 | (image->colorspace == CMYKColorspace)) |
| 352 | pixel.index+=(*k)*alpha*indexes[x+(width-i)*v+u]; |
| 353 | gamma+=(*k)*alpha; |
| 354 | k++; |
| 355 | p++; |
| 356 | } |
| 357 | } |
| 358 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 359 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 360 | q->red=ClampToQuantum(gamma*GetRedPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 361 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 362 | q->green=ClampToQuantum(gamma*GetGreenPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 363 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 364 | q->blue=ClampToQuantum(gamma*GetBluePixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 365 | if ((channel & OpacityChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 366 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 367 | if (((channel & IndexChannel) != 0) && |
| 368 | (image->colorspace == CMYKColorspace)) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 369 | blur_indexes[x]=ClampToQuantum(gamma*GetIndexPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 370 | q++; |
| 371 | r++; |
| 372 | } |
| 373 | if (SyncCacheViewAuthenticPixels(blur_view,exception) == MagickFalse) |
| 374 | status=MagickFalse; |
| 375 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 376 | { |
| 377 | MagickBooleanType |
| 378 | proceed; |
| 379 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 380 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 381 | #pragma omp critical (MagickCore_AdaptiveBlurImageChannel) |
| 382 | #endif |
| 383 | proceed=SetImageProgress(image,AdaptiveBlurImageTag,progress++, |
| 384 | image->rows); |
| 385 | if (proceed == MagickFalse) |
| 386 | status=MagickFalse; |
| 387 | } |
| 388 | } |
| 389 | blur_image->type=image->type; |
| 390 | blur_view=DestroyCacheView(blur_view); |
| 391 | edge_view=DestroyCacheView(edge_view); |
| 392 | image_view=DestroyCacheView(image_view); |
| 393 | edge_image=DestroyImage(edge_image); |
| 394 | for (i=0; i < (long) width; i+=2) |
| 395 | kernel[i]=(double *) RelinquishMagickMemory(kernel[i]); |
| 396 | kernel=(double **) RelinquishMagickMemory(kernel); |
| 397 | if (status == MagickFalse) |
| 398 | blur_image=DestroyImage(blur_image); |
| 399 | return(blur_image); |
| 400 | } |
| 401 | |
| 402 | /* |
| 403 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 404 | % % |
| 405 | % % |
| 406 | % % |
| 407 | % A d a p t i v e S h a r p e n I m a g e % |
| 408 | % % |
| 409 | % % |
| 410 | % % |
| 411 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 412 | % |
| 413 | % AdaptiveSharpenImage() adaptively sharpens the image by sharpening more |
| 414 | % intensely near image edges and less intensely far from edges. We sharpen the |
| 415 | % image with a Gaussian operator of the given radius and standard deviation |
| 416 | % (sigma). For reasonable results, radius should be larger than sigma. Use a |
| 417 | % radius of 0 and AdaptiveSharpenImage() selects a suitable radius for you. |
| 418 | % |
| 419 | % The format of the AdaptiveSharpenImage method is: |
| 420 | % |
| 421 | % Image *AdaptiveSharpenImage(const Image *image,const double radius, |
| 422 | % const double sigma,ExceptionInfo *exception) |
| 423 | % Image *AdaptiveSharpenImageChannel(const Image *image, |
| 424 | % const ChannelType channel,double radius,const double sigma, |
| 425 | % ExceptionInfo *exception) |
| 426 | % |
| 427 | % A description of each parameter follows: |
| 428 | % |
| 429 | % o image: the image. |
| 430 | % |
| 431 | % o channel: the channel type. |
| 432 | % |
| 433 | % o radius: the radius of the Gaussian, in pixels, not counting the center |
| 434 | % pixel. |
| 435 | % |
| 436 | % o sigma: the standard deviation of the Laplacian, in pixels. |
| 437 | % |
| 438 | % o exception: return any errors or warnings in this structure. |
| 439 | % |
| 440 | */ |
| 441 | |
| 442 | MagickExport Image *AdaptiveSharpenImage(const Image *image,const double radius, |
| 443 | const double sigma,ExceptionInfo *exception) |
| 444 | { |
| 445 | Image |
| 446 | *sharp_image; |
| 447 | |
| 448 | sharp_image=AdaptiveSharpenImageChannel(image,DefaultChannels,radius,sigma, |
| 449 | exception); |
| 450 | return(sharp_image); |
| 451 | } |
| 452 | |
| 453 | MagickExport Image *AdaptiveSharpenImageChannel(const Image *image, |
| 454 | const ChannelType channel,const double radius,const double sigma, |
| 455 | ExceptionInfo *exception) |
| 456 | { |
| 457 | #define AdaptiveSharpenImageTag "Convolve/Image" |
| 458 | #define MagickSigma (fabs(sigma) <= MagickEpsilon ? 1.0 : sigma) |
| 459 | |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 460 | CacheView |
| 461 | *sharp_view, |
| 462 | *edge_view, |
| 463 | *image_view; |
| 464 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 465 | double |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 466 | **kernel, |
| 467 | normalize; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 468 | |
| 469 | Image |
| 470 | *sharp_image, |
| 471 | *edge_image, |
| 472 | *gaussian_image; |
| 473 | |
| 474 | long |
| 475 | j, |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 476 | k, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 477 | progress, |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 478 | u, |
| 479 | v, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 480 | y; |
| 481 | |
| 482 | MagickBooleanType |
| 483 | status; |
| 484 | |
| 485 | MagickPixelPacket |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 486 | bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 487 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 488 | register long |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 489 | i; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 490 | |
| 491 | unsigned long |
| 492 | width; |
| 493 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 494 | assert(image != (const Image *) NULL); |
| 495 | assert(image->signature == MagickSignature); |
| 496 | if (image->debug != MagickFalse) |
| 497 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 498 | assert(exception != (ExceptionInfo *) NULL); |
| 499 | assert(exception->signature == MagickSignature); |
| 500 | sharp_image=CloneImage(image,0,0,MagickTrue,exception); |
| 501 | if (sharp_image == (Image *) NULL) |
| 502 | return((Image *) NULL); |
| 503 | if (fabs(sigma) <= MagickEpsilon) |
| 504 | return(sharp_image); |
| 505 | if (SetImageStorageClass(sharp_image,DirectClass) == MagickFalse) |
| 506 | { |
| 507 | InheritException(exception,&sharp_image->exception); |
| 508 | sharp_image=DestroyImage(sharp_image); |
| 509 | return((Image *) NULL); |
| 510 | } |
| 511 | /* |
| 512 | Edge detect the image brighness channel, level, sharp, and level again. |
| 513 | */ |
| 514 | edge_image=EdgeImage(image,radius,exception); |
| 515 | if (edge_image == (Image *) NULL) |
| 516 | { |
| 517 | sharp_image=DestroyImage(sharp_image); |
| 518 | return((Image *) NULL); |
| 519 | } |
| 520 | (void) LevelImage(edge_image,"20%,95%"); |
| 521 | gaussian_image=GaussianBlurImage(edge_image,radius,sigma,exception); |
| 522 | if (gaussian_image != (Image *) NULL) |
| 523 | { |
| 524 | edge_image=DestroyImage(edge_image); |
| 525 | edge_image=gaussian_image; |
| 526 | } |
| 527 | (void) LevelImage(edge_image,"10%,95%"); |
| 528 | /* |
| 529 | Create a set of kernels from maximum (radius,sigma) to minimum. |
| 530 | */ |
| 531 | width=GetOptimalKernelWidth2D(radius,sigma); |
| 532 | kernel=(double **) AcquireQuantumMemory((size_t) width,sizeof(*kernel)); |
| 533 | if (kernel == (double **) NULL) |
| 534 | { |
| 535 | edge_image=DestroyImage(edge_image); |
| 536 | sharp_image=DestroyImage(sharp_image); |
| 537 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 538 | } |
| 539 | (void) ResetMagickMemory(kernel,0,(size_t) width*sizeof(*kernel)); |
| 540 | for (i=0; i < (long) width; i+=2) |
| 541 | { |
| 542 | kernel[i]=(double *) AcquireQuantumMemory((size_t) (width-i),(width-i)* |
| 543 | sizeof(**kernel)); |
| 544 | if (kernel[i] == (double *) NULL) |
| 545 | break; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 546 | normalize=0.0; |
| 547 | j=(long) (width-i)/2; |
| 548 | k=0; |
| 549 | for (v=(-j); v <= j; v++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 550 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 551 | for (u=(-j); u <= j; u++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 552 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 553 | kernel[i][k]=(-exp(-((double) u*u+v*v)/(2.0*MagickSigma*MagickSigma))/ |
| 554 | (2.0*MagickPI*MagickSigma*MagickSigma)); |
| 555 | normalize+=kernel[i][k]; |
| 556 | k++; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 557 | } |
| 558 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 559 | if (fabs(normalize) <= MagickEpsilon) |
| 560 | normalize=1.0; |
| 561 | normalize=1.0/normalize; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 562 | for (k=0; k < (j*j); k++) |
| 563 | kernel[i][k]=normalize*kernel[i][k]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 564 | } |
| 565 | if (i < (long) width) |
| 566 | { |
| 567 | for (i-=2; i >= 0; i-=2) |
| 568 | kernel[i]=(double *) RelinquishMagickMemory(kernel[i]); |
| 569 | kernel=(double **) RelinquishMagickMemory(kernel); |
| 570 | edge_image=DestroyImage(edge_image); |
| 571 | sharp_image=DestroyImage(sharp_image); |
| 572 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 573 | } |
| 574 | /* |
| 575 | Adaptively sharpen image. |
| 576 | */ |
| 577 | status=MagickTrue; |
| 578 | progress=0; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 579 | GetMagickPixelPacket(image,&bias); |
| 580 | SetMagickPixelPacketBias(image,&bias); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 581 | image_view=AcquireCacheView(image); |
| 582 | edge_view=AcquireCacheView(edge_image); |
| 583 | sharp_view=AcquireCacheView(sharp_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 584 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 585 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 586 | #endif |
| 587 | for (y=0; y < (long) sharp_image->rows; y++) |
| 588 | { |
| 589 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 590 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 591 | |
| 592 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 593 | *restrict p, |
| 594 | *restrict r; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 595 | |
| 596 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 597 | *restrict sharp_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 598 | |
| 599 | register long |
| 600 | x; |
| 601 | |
| 602 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 603 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 604 | |
| 605 | if (status == MagickFalse) |
| 606 | continue; |
| 607 | r=GetCacheViewVirtualPixels(edge_view,0,y,edge_image->columns,1,exception); |
| 608 | q=QueueCacheViewAuthenticPixels(sharp_view,0,y,sharp_image->columns,1, |
| 609 | exception); |
| 610 | if ((r == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 611 | { |
| 612 | status=MagickFalse; |
| 613 | continue; |
| 614 | } |
| 615 | sharp_indexes=GetCacheViewAuthenticIndexQueue(sharp_view); |
| 616 | for (x=0; x < (long) sharp_image->columns; x++) |
| 617 | { |
| 618 | MagickPixelPacket |
| 619 | pixel; |
| 620 | |
| 621 | MagickRealType |
| 622 | alpha, |
| 623 | gamma; |
| 624 | |
| 625 | register const double |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 626 | *restrict k; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 627 | |
| 628 | register long |
| 629 | i, |
| 630 | u, |
| 631 | v; |
| 632 | |
| 633 | gamma=0.0; |
| 634 | i=(long) (width*(QuantumRange-QuantumScale*PixelIntensity(r))+0.5); |
| 635 | if (i < 0) |
| 636 | i=0; |
| 637 | else |
| 638 | if (i > (long) width) |
| 639 | i=(long) width; |
| 640 | if ((i & 0x01) != 0) |
| 641 | i--; |
| 642 | p=GetCacheViewVirtualPixels(image_view,x-((long) (width-i)/2L),y-(long) |
| 643 | ((width-i)/2L),width-i,width-i,exception); |
| 644 | if (p == (const PixelPacket *) NULL) |
| 645 | break; |
| 646 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 647 | k=kernel[i]; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 648 | pixel=bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 649 | for (v=0; v < (long) (width-i); v++) |
| 650 | { |
| 651 | for (u=0; u < (long) (width-i); u++) |
| 652 | { |
| 653 | alpha=1.0; |
| 654 | if (((channel & OpacityChannel) != 0) && |
| 655 | (image->matte != MagickFalse)) |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 656 | alpha=(MagickRealType) (QuantumScale*GetAlphaPixelComponent(p)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 657 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 658 | pixel.red+=(*k)*alpha*GetRedPixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 659 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 660 | pixel.green+=(*k)*alpha*GetGreenPixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 661 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 662 | pixel.blue+=(*k)*alpha*GetBluePixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 663 | if ((channel & OpacityChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 664 | pixel.opacity+=(*k)*GetOpacityPixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 665 | if (((channel & IndexChannel) != 0) && |
| 666 | (image->colorspace == CMYKColorspace)) |
| 667 | pixel.index+=(*k)*alpha*indexes[x+(width-i)*v+u]; |
| 668 | gamma+=(*k)*alpha; |
| 669 | k++; |
| 670 | p++; |
| 671 | } |
| 672 | } |
| 673 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 674 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 675 | q->red=ClampToQuantum(gamma*GetRedPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 676 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 677 | q->green=ClampToQuantum(gamma*GetGreenPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 678 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 679 | q->blue=ClampToQuantum(gamma*GetBluePixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 680 | if ((channel & OpacityChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 681 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 682 | if (((channel & IndexChannel) != 0) && |
| 683 | (image->colorspace == CMYKColorspace)) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 684 | sharp_indexes[x]=ClampToQuantum(gamma*GetIndexPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 685 | q++; |
| 686 | r++; |
| 687 | } |
| 688 | if (SyncCacheViewAuthenticPixels(sharp_view,exception) == MagickFalse) |
| 689 | status=MagickFalse; |
| 690 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 691 | { |
| 692 | MagickBooleanType |
| 693 | proceed; |
| 694 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 695 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 696 | #pragma omp critical (MagickCore_AdaptiveSharpenImageChannel) |
| 697 | #endif |
| 698 | proceed=SetImageProgress(image,AdaptiveSharpenImageTag,progress++, |
| 699 | image->rows); |
| 700 | if (proceed == MagickFalse) |
| 701 | status=MagickFalse; |
| 702 | } |
| 703 | } |
| 704 | sharp_image->type=image->type; |
| 705 | sharp_view=DestroyCacheView(sharp_view); |
| 706 | edge_view=DestroyCacheView(edge_view); |
| 707 | image_view=DestroyCacheView(image_view); |
| 708 | edge_image=DestroyImage(edge_image); |
| 709 | for (i=0; i < (long) width; i+=2) |
| 710 | kernel[i]=(double *) RelinquishMagickMemory(kernel[i]); |
| 711 | kernel=(double **) RelinquishMagickMemory(kernel); |
| 712 | if (status == MagickFalse) |
| 713 | sharp_image=DestroyImage(sharp_image); |
| 714 | return(sharp_image); |
| 715 | } |
| 716 | |
| 717 | /* |
| 718 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 719 | % % |
| 720 | % % |
| 721 | % % |
| 722 | % B l u r I m a g e % |
| 723 | % % |
| 724 | % % |
| 725 | % % |
| 726 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 727 | % |
| 728 | % BlurImage() blurs an image. We convolve the image with a Gaussian operator |
| 729 | % of the given radius and standard deviation (sigma). For reasonable results, |
| 730 | % the radius should be larger than sigma. Use a radius of 0 and BlurImage() |
| 731 | % selects a suitable radius for you. |
| 732 | % |
| 733 | % BlurImage() differs from GaussianBlurImage() in that it uses a separable |
| 734 | % kernel which is faster but mathematically equivalent to the non-separable |
| 735 | % kernel. |
| 736 | % |
| 737 | % The format of the BlurImage method is: |
| 738 | % |
| 739 | % Image *BlurImage(const Image *image,const double radius, |
| 740 | % const double sigma,ExceptionInfo *exception) |
| 741 | % Image *BlurImageChannel(const Image *image,const ChannelType channel, |
| 742 | % const double radius,const double sigma,ExceptionInfo *exception) |
| 743 | % |
| 744 | % A description of each parameter follows: |
| 745 | % |
| 746 | % o image: the image. |
| 747 | % |
| 748 | % o channel: the channel type. |
| 749 | % |
| 750 | % o radius: the radius of the Gaussian, in pixels, not counting the center |
| 751 | % pixel. |
| 752 | % |
| 753 | % o sigma: the standard deviation of the Gaussian, in pixels. |
| 754 | % |
| 755 | % o exception: return any errors or warnings in this structure. |
| 756 | % |
| 757 | */ |
| 758 | |
| 759 | MagickExport Image *BlurImage(const Image *image,const double radius, |
| 760 | const double sigma,ExceptionInfo *exception) |
| 761 | { |
| 762 | Image |
| 763 | *blur_image; |
| 764 | |
| 765 | blur_image=BlurImageChannel(image,DefaultChannels,radius,sigma,exception); |
| 766 | return(blur_image); |
| 767 | } |
| 768 | |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 769 | static double *GetBlurKernel(const unsigned long width,const double sigma) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 770 | { |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 771 | double |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 772 | *kernel, |
| 773 | normalize; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 774 | |
| 775 | long |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 776 | j, |
| 777 | k; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 778 | |
| 779 | register long |
| 780 | i; |
| 781 | |
| 782 | /* |
| 783 | Generate a 1-D convolution kernel. |
| 784 | */ |
| 785 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
| 786 | kernel=(double *) AcquireQuantumMemory((size_t) width,sizeof(*kernel)); |
| 787 | if (kernel == (double *) NULL) |
| 788 | return(0); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 789 | normalize=0.0; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 790 | j=(long) width/2; |
| 791 | i=0; |
| 792 | for (k=(-j); k <= j; k++) |
| 793 | { |
cristy | f267c72 | 2009-12-18 00:07:22 +0000 | [diff] [blame] | 794 | kernel[i]=exp(-((double) k*k)/(2.0*MagickSigma*MagickSigma))/ |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 795 | (MagickSQ2PI*MagickSigma); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 796 | normalize+=kernel[i]; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 797 | i++; |
| 798 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 799 | for (i=0; i < (long) width; i++) |
| 800 | kernel[i]/=normalize; |
| 801 | return(kernel); |
| 802 | } |
| 803 | |
| 804 | MagickExport Image *BlurImageChannel(const Image *image, |
| 805 | const ChannelType channel,const double radius,const double sigma, |
| 806 | ExceptionInfo *exception) |
| 807 | { |
| 808 | #define BlurImageTag "Blur/Image" |
| 809 | |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 810 | CacheView |
| 811 | *blur_view, |
| 812 | *image_view; |
| 813 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 814 | double |
| 815 | *kernel; |
| 816 | |
| 817 | Image |
| 818 | *blur_image; |
| 819 | |
| 820 | long |
| 821 | progress, |
| 822 | x, |
| 823 | y; |
| 824 | |
| 825 | MagickBooleanType |
| 826 | status; |
| 827 | |
| 828 | MagickPixelPacket |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 829 | bias; |
| 830 | |
| 831 | register long |
| 832 | i; |
| 833 | |
| 834 | unsigned long |
| 835 | width; |
| 836 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 837 | /* |
| 838 | Initialize blur image attributes. |
| 839 | */ |
| 840 | assert(image != (Image *) NULL); |
| 841 | assert(image->signature == MagickSignature); |
| 842 | if (image->debug != MagickFalse) |
| 843 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 844 | assert(exception != (ExceptionInfo *) NULL); |
| 845 | assert(exception->signature == MagickSignature); |
| 846 | blur_image=CloneImage(image,0,0,MagickTrue,exception); |
| 847 | if (blur_image == (Image *) NULL) |
| 848 | return((Image *) NULL); |
| 849 | if (fabs(sigma) <= MagickEpsilon) |
| 850 | return(blur_image); |
| 851 | if (SetImageStorageClass(blur_image,DirectClass) == MagickFalse) |
| 852 | { |
| 853 | InheritException(exception,&blur_image->exception); |
| 854 | blur_image=DestroyImage(blur_image); |
| 855 | return((Image *) NULL); |
| 856 | } |
| 857 | width=GetOptimalKernelWidth1D(radius,sigma); |
| 858 | kernel=GetBlurKernel(width,sigma); |
| 859 | if (kernel == (double *) NULL) |
| 860 | { |
| 861 | blur_image=DestroyImage(blur_image); |
| 862 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 863 | } |
| 864 | if (image->debug != MagickFalse) |
| 865 | { |
| 866 | char |
| 867 | format[MaxTextExtent], |
| 868 | *message; |
| 869 | |
| 870 | register const double |
| 871 | *k; |
| 872 | |
| 873 | (void) LogMagickEvent(TransformEvent,GetMagickModule(), |
| 874 | " BlurImage with %ld kernel:",width); |
| 875 | message=AcquireString(""); |
| 876 | k=kernel; |
| 877 | for (i=0; i < (long) width; i++) |
| 878 | { |
| 879 | *message='\0'; |
| 880 | (void) FormatMagickString(format,MaxTextExtent,"%ld: ",i); |
| 881 | (void) ConcatenateString(&message,format); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 882 | (void) FormatMagickString(format,MaxTextExtent,"%g ",*k++); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 883 | (void) ConcatenateString(&message,format); |
| 884 | (void) LogMagickEvent(TransformEvent,GetMagickModule(),"%s",message); |
| 885 | } |
| 886 | message=DestroyString(message); |
| 887 | } |
| 888 | /* |
| 889 | Blur rows. |
| 890 | */ |
| 891 | status=MagickTrue; |
| 892 | progress=0; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 893 | GetMagickPixelPacket(image,&bias); |
| 894 | SetMagickPixelPacketBias(image,&bias); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 895 | image_view=AcquireCacheView(image); |
| 896 | blur_view=AcquireCacheView(blur_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 897 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 898 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 899 | #endif |
| 900 | for (y=0; y < (long) blur_image->rows; y++) |
| 901 | { |
| 902 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 903 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 904 | |
| 905 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 906 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 907 | |
| 908 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 909 | *restrict blur_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 910 | |
| 911 | register long |
| 912 | x; |
| 913 | |
| 914 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 915 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 916 | |
| 917 | if (status == MagickFalse) |
| 918 | continue; |
| 919 | p=GetCacheViewVirtualPixels(image_view,-((long) width/2L),y,image->columns+ |
| 920 | width,1,exception); |
| 921 | q=GetCacheViewAuthenticPixels(blur_view,0,y,blur_image->columns,1, |
| 922 | exception); |
| 923 | if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 924 | { |
| 925 | status=MagickFalse; |
| 926 | continue; |
| 927 | } |
| 928 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 929 | blur_indexes=GetCacheViewAuthenticIndexQueue(blur_view); |
| 930 | for (x=0; x < (long) blur_image->columns; x++) |
| 931 | { |
| 932 | MagickPixelPacket |
| 933 | pixel; |
| 934 | |
| 935 | register const double |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 936 | *restrict k; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 937 | |
| 938 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 939 | *restrict kernel_pixels; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 940 | |
| 941 | register long |
| 942 | i; |
| 943 | |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 944 | pixel=bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 945 | k=kernel; |
| 946 | kernel_pixels=p; |
| 947 | if (((channel & OpacityChannel) == 0) || (image->matte == MagickFalse)) |
| 948 | { |
| 949 | for (i=0; i < (long) width; i++) |
| 950 | { |
| 951 | pixel.red+=(*k)*kernel_pixels->red; |
| 952 | pixel.green+=(*k)*kernel_pixels->green; |
| 953 | pixel.blue+=(*k)*kernel_pixels->blue; |
| 954 | k++; |
| 955 | kernel_pixels++; |
| 956 | } |
| 957 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 958 | SetRedPixelComponent(q,ClampRedPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 959 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 960 | SetGreenPixelComponent(q,ClampGreenPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 961 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 962 | SetBluePixelComponent(q,ClampBluePixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 963 | if ((channel & OpacityChannel) != 0) |
| 964 | { |
| 965 | k=kernel; |
| 966 | kernel_pixels=p; |
| 967 | for (i=0; i < (long) width; i++) |
| 968 | { |
| 969 | pixel.opacity+=(*k)*kernel_pixels->opacity; |
| 970 | k++; |
| 971 | kernel_pixels++; |
| 972 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 973 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 974 | } |
| 975 | if (((channel & IndexChannel) != 0) && |
| 976 | (image->colorspace == CMYKColorspace)) |
| 977 | { |
| 978 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 979 | *restrict kernel_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 980 | |
| 981 | k=kernel; |
| 982 | kernel_indexes=indexes; |
| 983 | for (i=0; i < (long) width; i++) |
| 984 | { |
| 985 | pixel.index+=(*k)*(*kernel_indexes); |
| 986 | k++; |
| 987 | kernel_indexes++; |
| 988 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 989 | blur_indexes[x]=ClampToQuantum(pixel.index); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 990 | } |
| 991 | } |
| 992 | else |
| 993 | { |
| 994 | MagickRealType |
| 995 | alpha, |
| 996 | gamma; |
| 997 | |
| 998 | gamma=0.0; |
| 999 | for (i=0; i < (long) width; i++) |
| 1000 | { |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 1001 | alpha=(MagickRealType) (QuantumScale* |
| 1002 | GetAlphaPixelComponent(kernel_pixels)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1003 | pixel.red+=(*k)*alpha*kernel_pixels->red; |
| 1004 | pixel.green+=(*k)*alpha*kernel_pixels->green; |
| 1005 | pixel.blue+=(*k)*alpha*kernel_pixels->blue; |
| 1006 | gamma+=(*k)*alpha; |
| 1007 | k++; |
| 1008 | kernel_pixels++; |
| 1009 | } |
| 1010 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 1011 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1012 | q->red=ClampToQuantum(gamma*GetRedPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1013 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1014 | q->green=ClampToQuantum(gamma*GetGreenPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1015 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1016 | q->blue=ClampToQuantum(gamma*GetBluePixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1017 | if ((channel & OpacityChannel) != 0) |
| 1018 | { |
| 1019 | k=kernel; |
| 1020 | kernel_pixels=p; |
| 1021 | for (i=0; i < (long) width; i++) |
| 1022 | { |
| 1023 | pixel.opacity+=(*k)*kernel_pixels->opacity; |
| 1024 | k++; |
| 1025 | kernel_pixels++; |
| 1026 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1027 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1028 | } |
| 1029 | if (((channel & IndexChannel) != 0) && |
| 1030 | (image->colorspace == CMYKColorspace)) |
| 1031 | { |
| 1032 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1033 | *restrict kernel_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1034 | |
| 1035 | k=kernel; |
| 1036 | kernel_pixels=p; |
| 1037 | kernel_indexes=indexes; |
| 1038 | for (i=0; i < (long) width; i++) |
| 1039 | { |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 1040 | alpha=(MagickRealType) (QuantumScale* |
| 1041 | GetAlphaPixelComponent(kernel_pixels)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1042 | pixel.index+=(*k)*alpha*(*kernel_indexes); |
| 1043 | k++; |
| 1044 | kernel_pixels++; |
| 1045 | kernel_indexes++; |
| 1046 | } |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 1047 | blur_indexes[x]=ClampToQuantum(gamma* |
| 1048 | GetIndexPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1049 | } |
| 1050 | } |
| 1051 | p++; |
| 1052 | q++; |
| 1053 | } |
| 1054 | if (SyncCacheViewAuthenticPixels(blur_view,exception) == MagickFalse) |
| 1055 | status=MagickFalse; |
| 1056 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 1057 | { |
| 1058 | MagickBooleanType |
| 1059 | proceed; |
| 1060 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 1061 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1062 | #pragma omp critical (MagickCore_BlurImageChannel) |
| 1063 | #endif |
| 1064 | proceed=SetImageProgress(image,BlurImageTag,progress++,blur_image->rows+ |
| 1065 | blur_image->columns); |
| 1066 | if (proceed == MagickFalse) |
| 1067 | status=MagickFalse; |
| 1068 | } |
| 1069 | } |
| 1070 | blur_view=DestroyCacheView(blur_view); |
| 1071 | image_view=DestroyCacheView(image_view); |
| 1072 | /* |
| 1073 | Blur columns. |
| 1074 | */ |
| 1075 | image_view=AcquireCacheView(blur_image); |
| 1076 | blur_view=AcquireCacheView(blur_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 1077 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 1078 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1079 | #endif |
| 1080 | for (x=0; x < (long) blur_image->columns; x++) |
| 1081 | { |
| 1082 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1083 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1084 | |
| 1085 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1086 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1087 | |
| 1088 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1089 | *restrict blur_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1090 | |
| 1091 | register long |
| 1092 | y; |
| 1093 | |
| 1094 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1095 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1096 | |
| 1097 | if (status == MagickFalse) |
| 1098 | continue; |
| 1099 | p=GetCacheViewVirtualPixels(image_view,x,-((long) width/2L),1,image->rows+ |
| 1100 | width,exception); |
| 1101 | q=GetCacheViewAuthenticPixels(blur_view,x,0,1,blur_image->rows,exception); |
| 1102 | if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 1103 | { |
| 1104 | status=MagickFalse; |
| 1105 | continue; |
| 1106 | } |
| 1107 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 1108 | blur_indexes=GetCacheViewAuthenticIndexQueue(blur_view); |
| 1109 | for (y=0; y < (long) blur_image->rows; y++) |
| 1110 | { |
| 1111 | MagickPixelPacket |
| 1112 | pixel; |
| 1113 | |
| 1114 | register const double |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1115 | *restrict k; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1116 | |
| 1117 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1118 | *restrict kernel_pixels; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1119 | |
| 1120 | register long |
| 1121 | i; |
| 1122 | |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 1123 | pixel=bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1124 | k=kernel; |
| 1125 | kernel_pixels=p; |
| 1126 | if (((channel & OpacityChannel) == 0) || (image->matte == MagickFalse)) |
| 1127 | { |
| 1128 | for (i=0; i < (long) width; i++) |
| 1129 | { |
| 1130 | pixel.red+=(*k)*kernel_pixels->red; |
| 1131 | pixel.green+=(*k)*kernel_pixels->green; |
| 1132 | pixel.blue+=(*k)*kernel_pixels->blue; |
| 1133 | k++; |
| 1134 | kernel_pixels++; |
| 1135 | } |
| 1136 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1137 | SetRedPixelComponent(q,ClampRedPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1138 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1139 | SetGreenPixelComponent(q,ClampGreenPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1140 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1141 | SetBluePixelComponent(q,ClampBluePixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1142 | if ((channel & OpacityChannel) != 0) |
| 1143 | { |
| 1144 | k=kernel; |
| 1145 | kernel_pixels=p; |
| 1146 | for (i=0; i < (long) width; i++) |
| 1147 | { |
| 1148 | pixel.opacity+=(*k)*kernel_pixels->opacity; |
| 1149 | k++; |
| 1150 | kernel_pixels++; |
| 1151 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1152 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1153 | } |
| 1154 | if (((channel & IndexChannel) != 0) && |
| 1155 | (image->colorspace == CMYKColorspace)) |
| 1156 | { |
| 1157 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1158 | *restrict kernel_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1159 | |
| 1160 | k=kernel; |
| 1161 | kernel_indexes=indexes; |
| 1162 | for (i=0; i < (long) width; i++) |
| 1163 | { |
| 1164 | pixel.index+=(*k)*(*kernel_indexes); |
| 1165 | k++; |
| 1166 | kernel_indexes++; |
| 1167 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1168 | blur_indexes[y]=ClampToQuantum(pixel.index); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1169 | } |
| 1170 | } |
| 1171 | else |
| 1172 | { |
| 1173 | MagickRealType |
| 1174 | alpha, |
| 1175 | gamma; |
| 1176 | |
| 1177 | gamma=0.0; |
| 1178 | for (i=0; i < (long) width; i++) |
| 1179 | { |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 1180 | alpha=(MagickRealType) (QuantumScale* |
| 1181 | GetAlphaPixelComponent(kernel_pixels)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1182 | pixel.red+=(*k)*alpha*kernel_pixels->red; |
| 1183 | pixel.green+=(*k)*alpha*kernel_pixels->green; |
| 1184 | pixel.blue+=(*k)*alpha*kernel_pixels->blue; |
| 1185 | gamma+=(*k)*alpha; |
| 1186 | k++; |
| 1187 | kernel_pixels++; |
| 1188 | } |
| 1189 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 1190 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1191 | q->red=ClampToQuantum(gamma*GetRedPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1192 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1193 | q->green=ClampToQuantum(gamma*GetGreenPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1194 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1195 | q->blue=ClampToQuantum(gamma*GetBluePixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1196 | if ((channel & OpacityChannel) != 0) |
| 1197 | { |
| 1198 | k=kernel; |
| 1199 | kernel_pixels=p; |
| 1200 | for (i=0; i < (long) width; i++) |
| 1201 | { |
| 1202 | pixel.opacity+=(*k)*kernel_pixels->opacity; |
| 1203 | k++; |
| 1204 | kernel_pixels++; |
| 1205 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1206 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1207 | } |
| 1208 | if (((channel & IndexChannel) != 0) && |
| 1209 | (image->colorspace == CMYKColorspace)) |
| 1210 | { |
| 1211 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1212 | *restrict kernel_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1213 | |
| 1214 | k=kernel; |
| 1215 | kernel_pixels=p; |
| 1216 | kernel_indexes=indexes; |
| 1217 | for (i=0; i < (long) width; i++) |
| 1218 | { |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 1219 | alpha=(MagickRealType) (QuantumScale* |
| 1220 | GetAlphaPixelComponent(kernel_pixels)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1221 | pixel.index+=(*k)*alpha*(*kernel_indexes); |
| 1222 | k++; |
| 1223 | kernel_pixels++; |
| 1224 | kernel_indexes++; |
| 1225 | } |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 1226 | blur_indexes[y]=ClampToQuantum(gamma* |
| 1227 | GetIndexPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1228 | } |
| 1229 | } |
| 1230 | p++; |
| 1231 | q++; |
| 1232 | } |
| 1233 | if (SyncCacheViewAuthenticPixels(blur_view,exception) == MagickFalse) |
| 1234 | status=MagickFalse; |
| 1235 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 1236 | { |
| 1237 | MagickBooleanType |
| 1238 | proceed; |
| 1239 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 1240 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1241 | #pragma omp critical (MagickCore_BlurImageChannel) |
| 1242 | #endif |
| 1243 | proceed=SetImageProgress(image,BlurImageTag,progress++,blur_image->rows+ |
| 1244 | blur_image->columns); |
| 1245 | if (proceed == MagickFalse) |
| 1246 | status=MagickFalse; |
| 1247 | } |
| 1248 | } |
| 1249 | blur_view=DestroyCacheView(blur_view); |
| 1250 | image_view=DestroyCacheView(image_view); |
| 1251 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 1252 | if (status == MagickFalse) |
| 1253 | blur_image=DestroyImage(blur_image); |
| 1254 | blur_image->type=image->type; |
| 1255 | return(blur_image); |
| 1256 | } |
| 1257 | |
| 1258 | /* |
| 1259 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1260 | % % |
| 1261 | % % |
| 1262 | % % |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1263 | % C o n v o l v e I m a g e % |
| 1264 | % % |
| 1265 | % % |
| 1266 | % % |
| 1267 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1268 | % |
| 1269 | % ConvolveImage() applies a custom convolution kernel to the image. |
| 1270 | % |
| 1271 | % The format of the ConvolveImage method is: |
| 1272 | % |
| 1273 | % Image *ConvolveImage(const Image *image,const unsigned long order, |
| 1274 | % const double *kernel,ExceptionInfo *exception) |
| 1275 | % Image *ConvolveImageChannel(const Image *image,const ChannelType channel, |
| 1276 | % const unsigned long order,const double *kernel, |
| 1277 | % ExceptionInfo *exception) |
| 1278 | % |
| 1279 | % A description of each parameter follows: |
| 1280 | % |
| 1281 | % o image: the image. |
| 1282 | % |
| 1283 | % o channel: the channel type. |
| 1284 | % |
| 1285 | % o order: the number of columns and rows in the filter kernel. |
| 1286 | % |
| 1287 | % o kernel: An array of double representing the convolution kernel. |
| 1288 | % |
| 1289 | % o exception: return any errors or warnings in this structure. |
| 1290 | % |
| 1291 | */ |
| 1292 | |
| 1293 | MagickExport Image *ConvolveImage(const Image *image,const unsigned long order, |
| 1294 | const double *kernel,ExceptionInfo *exception) |
| 1295 | { |
| 1296 | Image |
| 1297 | *convolve_image; |
| 1298 | |
| 1299 | convolve_image=ConvolveImageChannel(image,DefaultChannels,order,kernel, |
| 1300 | exception); |
| 1301 | return(convolve_image); |
| 1302 | } |
| 1303 | |
| 1304 | MagickExport Image *ConvolveImageChannel(const Image *image, |
| 1305 | const ChannelType channel,const unsigned long order,const double *kernel, |
| 1306 | ExceptionInfo *exception) |
| 1307 | { |
| 1308 | #define ConvolveImageTag "Convolve/Image" |
| 1309 | |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 1310 | CacheView |
| 1311 | *convolve_view, |
| 1312 | *image_view; |
| 1313 | |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1314 | double |
| 1315 | *normal_kernel; |
| 1316 | |
| 1317 | Image |
| 1318 | *convolve_image; |
| 1319 | |
| 1320 | long |
| 1321 | progress, |
| 1322 | y; |
| 1323 | |
| 1324 | MagickBooleanType |
| 1325 | status; |
| 1326 | |
| 1327 | MagickPixelPacket |
| 1328 | bias; |
| 1329 | |
| 1330 | MagickRealType |
| 1331 | gamma; |
| 1332 | |
| 1333 | register long |
| 1334 | i; |
| 1335 | |
| 1336 | unsigned long |
| 1337 | width; |
| 1338 | |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1339 | /* |
| 1340 | Initialize convolve image attributes. |
| 1341 | */ |
| 1342 | assert(image != (Image *) NULL); |
| 1343 | assert(image->signature == MagickSignature); |
| 1344 | if (image->debug != MagickFalse) |
| 1345 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1346 | assert(exception != (ExceptionInfo *) NULL); |
| 1347 | assert(exception->signature == MagickSignature); |
| 1348 | width=order; |
| 1349 | if ((width % 2) == 0) |
| 1350 | ThrowImageException(OptionError,"KernelWidthMustBeAnOddNumber"); |
| 1351 | convolve_image=CloneImage(image,0,0,MagickTrue,exception); |
| 1352 | if (convolve_image == (Image *) NULL) |
| 1353 | return((Image *) NULL); |
| 1354 | if (SetImageStorageClass(convolve_image,DirectClass) == MagickFalse) |
| 1355 | { |
| 1356 | InheritException(exception,&convolve_image->exception); |
| 1357 | convolve_image=DestroyImage(convolve_image); |
| 1358 | return((Image *) NULL); |
| 1359 | } |
| 1360 | if (image->debug != MagickFalse) |
| 1361 | { |
| 1362 | char |
| 1363 | format[MaxTextExtent], |
| 1364 | *message; |
| 1365 | |
| 1366 | long |
| 1367 | u, |
| 1368 | v; |
| 1369 | |
| 1370 | register const double |
| 1371 | *k; |
| 1372 | |
| 1373 | (void) LogMagickEvent(TransformEvent,GetMagickModule(), |
| 1374 | " ConvolveImage with %ldx%ld kernel:",width,width); |
| 1375 | message=AcquireString(""); |
| 1376 | k=kernel; |
| 1377 | for (v=0; v < (long) width; v++) |
| 1378 | { |
| 1379 | *message='\0'; |
| 1380 | (void) FormatMagickString(format,MaxTextExtent,"%ld: ",v); |
| 1381 | (void) ConcatenateString(&message,format); |
| 1382 | for (u=0; u < (long) width; u++) |
| 1383 | { |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 1384 | (void) FormatMagickString(format,MaxTextExtent,"%g ",*k++); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1385 | (void) ConcatenateString(&message,format); |
| 1386 | } |
| 1387 | (void) LogMagickEvent(TransformEvent,GetMagickModule(),"%s",message); |
| 1388 | } |
| 1389 | message=DestroyString(message); |
| 1390 | } |
| 1391 | /* |
| 1392 | Normalize kernel. |
| 1393 | */ |
| 1394 | normal_kernel=(double *) AcquireQuantumMemory(width*width, |
| 1395 | sizeof(*normal_kernel)); |
| 1396 | if (normal_kernel == (double *) NULL) |
| 1397 | { |
| 1398 | convolve_image=DestroyImage(convolve_image); |
| 1399 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1400 | } |
| 1401 | gamma=0.0; |
| 1402 | for (i=0; i < (long) (width*width); i++) |
| 1403 | gamma+=kernel[i]; |
| 1404 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 1405 | for (i=0; i < (long) (width*width); i++) |
| 1406 | normal_kernel[i]=gamma*kernel[i]; |
| 1407 | /* |
| 1408 | Convolve image. |
| 1409 | */ |
| 1410 | status=MagickTrue; |
| 1411 | progress=0; |
| 1412 | GetMagickPixelPacket(image,&bias); |
| 1413 | SetMagickPixelPacketBias(image,&bias); |
| 1414 | image_view=AcquireCacheView(image); |
| 1415 | convolve_view=AcquireCacheView(convolve_image); |
| 1416 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 1417 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
| 1418 | #endif |
| 1419 | for (y=0; y < (long) image->rows; y++) |
| 1420 | { |
| 1421 | MagickBooleanType |
| 1422 | sync; |
| 1423 | |
| 1424 | register const IndexPacket |
| 1425 | *restrict indexes; |
| 1426 | |
| 1427 | register const PixelPacket |
| 1428 | *restrict p; |
| 1429 | |
| 1430 | register IndexPacket |
| 1431 | *restrict convolve_indexes; |
| 1432 | |
| 1433 | register long |
| 1434 | x; |
| 1435 | |
| 1436 | register PixelPacket |
| 1437 | *restrict q; |
| 1438 | |
| 1439 | if (status == MagickFalse) |
| 1440 | continue; |
| 1441 | p=GetCacheViewVirtualPixels(image_view,-((long) width/2L),y-(long) (width/ |
| 1442 | 2L),image->columns+width,width,exception); |
| 1443 | q=GetCacheViewAuthenticPixels(convolve_view,0,y,convolve_image->columns,1, |
| 1444 | exception); |
| 1445 | if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 1446 | { |
| 1447 | status=MagickFalse; |
| 1448 | continue; |
| 1449 | } |
| 1450 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 1451 | convolve_indexes=GetCacheViewAuthenticIndexQueue(convolve_view); |
| 1452 | for (x=0; x < (long) image->columns; x++) |
| 1453 | { |
| 1454 | long |
| 1455 | v; |
| 1456 | |
| 1457 | MagickPixelPacket |
| 1458 | pixel; |
| 1459 | |
| 1460 | register const double |
| 1461 | *restrict k; |
| 1462 | |
| 1463 | register const PixelPacket |
| 1464 | *restrict kernel_pixels; |
| 1465 | |
| 1466 | register long |
| 1467 | u; |
| 1468 | |
| 1469 | pixel=bias; |
| 1470 | k=normal_kernel; |
| 1471 | kernel_pixels=p; |
| 1472 | if (((channel & OpacityChannel) == 0) || (image->matte == MagickFalse)) |
| 1473 | { |
| 1474 | for (v=0; v < (long) width; v++) |
| 1475 | { |
| 1476 | for (u=0; u < (long) width; u++) |
| 1477 | { |
| 1478 | pixel.red+=(*k)*kernel_pixels[u].red; |
| 1479 | pixel.green+=(*k)*kernel_pixels[u].green; |
| 1480 | pixel.blue+=(*k)*kernel_pixels[u].blue; |
| 1481 | k++; |
| 1482 | } |
| 1483 | kernel_pixels+=image->columns+width; |
| 1484 | } |
| 1485 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1486 | SetRedPixelComponent(q,ClampRedPixelComponent(&pixel)); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1487 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1488 | SetGreenPixelComponent(q,ClampGreenPixelComponent(&pixel)); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1489 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1490 | SetBluePixelComponent(q,ClampBluePixelComponent(&pixel)); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1491 | if ((channel & OpacityChannel) != 0) |
| 1492 | { |
| 1493 | k=normal_kernel; |
| 1494 | kernel_pixels=p; |
| 1495 | for (v=0; v < (long) width; v++) |
| 1496 | { |
| 1497 | for (u=0; u < (long) width; u++) |
| 1498 | { |
| 1499 | pixel.opacity+=(*k)*kernel_pixels[u].opacity; |
| 1500 | k++; |
| 1501 | } |
| 1502 | kernel_pixels+=image->columns+width; |
| 1503 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1504 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1505 | } |
| 1506 | if (((channel & IndexChannel) != 0) && |
| 1507 | (image->colorspace == CMYKColorspace)) |
| 1508 | { |
| 1509 | register const IndexPacket |
| 1510 | *restrict kernel_indexes; |
| 1511 | |
| 1512 | k=normal_kernel; |
| 1513 | kernel_indexes=indexes; |
| 1514 | for (v=0; v < (long) width; v++) |
| 1515 | { |
| 1516 | for (u=0; u < (long) width; u++) |
| 1517 | { |
| 1518 | pixel.index+=(*k)*kernel_indexes[u]; |
| 1519 | k++; |
| 1520 | } |
| 1521 | kernel_indexes+=image->columns+width; |
| 1522 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1523 | convolve_indexes[x]=ClampToQuantum(pixel.index); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1524 | } |
| 1525 | } |
| 1526 | else |
| 1527 | { |
| 1528 | MagickRealType |
| 1529 | alpha, |
| 1530 | gamma; |
| 1531 | |
| 1532 | gamma=0.0; |
| 1533 | for (v=0; v < (long) width; v++) |
| 1534 | { |
| 1535 | for (u=0; u < (long) width; u++) |
| 1536 | { |
| 1537 | alpha=(MagickRealType) (QuantumScale*(QuantumRange- |
| 1538 | kernel_pixels[u].opacity)); |
| 1539 | pixel.red+=(*k)*alpha*kernel_pixels[u].red; |
| 1540 | pixel.green+=(*k)*alpha*kernel_pixels[u].green; |
| 1541 | pixel.blue+=(*k)*alpha*kernel_pixels[u].blue; |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1542 | gamma+=(*k)*alpha; |
| 1543 | k++; |
| 1544 | } |
| 1545 | kernel_pixels+=image->columns+width; |
| 1546 | } |
| 1547 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 1548 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1549 | q->red=ClampToQuantum(gamma*GetRedPixelComponent(&pixel)); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1550 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1551 | q->green=ClampToQuantum(gamma*GetGreenPixelComponent(&pixel)); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1552 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1553 | q->blue=ClampToQuantum(gamma*GetBluePixelComponent(&pixel)); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1554 | if ((channel & OpacityChannel) != 0) |
| 1555 | { |
| 1556 | k=normal_kernel; |
| 1557 | kernel_pixels=p; |
| 1558 | for (v=0; v < (long) width; v++) |
| 1559 | { |
| 1560 | for (u=0; u < (long) width; u++) |
| 1561 | { |
| 1562 | pixel.opacity+=(*k)*kernel_pixels[u].opacity; |
| 1563 | k++; |
| 1564 | } |
| 1565 | kernel_pixels+=image->columns+width; |
| 1566 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1567 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1568 | } |
| 1569 | if (((channel & IndexChannel) != 0) && |
| 1570 | (image->colorspace == CMYKColorspace)) |
| 1571 | { |
| 1572 | register const IndexPacket |
| 1573 | *restrict kernel_indexes; |
| 1574 | |
| 1575 | k=normal_kernel; |
| 1576 | kernel_pixels=p; |
| 1577 | kernel_indexes=indexes; |
| 1578 | for (v=0; v < (long) width; v++) |
| 1579 | { |
| 1580 | for (u=0; u < (long) width; u++) |
| 1581 | { |
| 1582 | alpha=(MagickRealType) (QuantumScale*(QuantumRange- |
| 1583 | kernel_pixels[u].opacity)); |
| 1584 | pixel.index+=(*k)*alpha*kernel_indexes[u]; |
| 1585 | k++; |
| 1586 | } |
| 1587 | kernel_pixels+=image->columns+width; |
| 1588 | kernel_indexes+=image->columns+width; |
| 1589 | } |
cristy | 24b06da | 2010-01-09 23:05:56 +0000 | [diff] [blame] | 1590 | convolve_indexes[x]=ClampToQuantum(gamma* |
| 1591 | GetIndexPixelComponent(&pixel)); |
cristy | fccdab9 | 2009-11-30 16:43:57 +0000 | [diff] [blame] | 1592 | } |
| 1593 | } |
| 1594 | p++; |
| 1595 | q++; |
| 1596 | } |
| 1597 | sync=SyncCacheViewAuthenticPixels(convolve_view,exception); |
| 1598 | if (sync == MagickFalse) |
| 1599 | status=MagickFalse; |
| 1600 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 1601 | { |
| 1602 | MagickBooleanType |
| 1603 | proceed; |
| 1604 | |
| 1605 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 1606 | #pragma omp critical (MagickCore_ConvolveImageChannel) |
| 1607 | #endif |
| 1608 | proceed=SetImageProgress(image,ConvolveImageTag,progress++,image->rows); |
| 1609 | if (proceed == MagickFalse) |
| 1610 | status=MagickFalse; |
| 1611 | } |
| 1612 | } |
| 1613 | convolve_image->type=image->type; |
| 1614 | convolve_view=DestroyCacheView(convolve_view); |
| 1615 | image_view=DestroyCacheView(image_view); |
| 1616 | normal_kernel=(double *) RelinquishMagickMemory(normal_kernel); |
| 1617 | if (status == MagickFalse) |
| 1618 | convolve_image=DestroyImage(convolve_image); |
| 1619 | return(convolve_image); |
| 1620 | } |
| 1621 | |
| 1622 | /* |
| 1623 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1624 | % % |
| 1625 | % % |
| 1626 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1627 | % D e s p e c k l e I m a g e % |
| 1628 | % % |
| 1629 | % % |
| 1630 | % % |
| 1631 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1632 | % |
| 1633 | % DespeckleImage() reduces the speckle noise in an image while perserving the |
| 1634 | % edges of the original image. |
| 1635 | % |
| 1636 | % The format of the DespeckleImage method is: |
| 1637 | % |
| 1638 | % Image *DespeckleImage(const Image *image,ExceptionInfo *exception) |
| 1639 | % |
| 1640 | % A description of each parameter follows: |
| 1641 | % |
| 1642 | % o image: the image. |
| 1643 | % |
| 1644 | % o exception: return any errors or warnings in this structure. |
| 1645 | % |
| 1646 | */ |
| 1647 | |
| 1648 | static Quantum **DestroyPixelThreadSet(Quantum **pixels) |
| 1649 | { |
| 1650 | register long |
| 1651 | i; |
| 1652 | |
| 1653 | assert(pixels != (Quantum **) NULL); |
| 1654 | for (i=0; i < (long) GetOpenMPMaximumThreads(); i++) |
| 1655 | if (pixels[i] != (Quantum *) NULL) |
| 1656 | pixels[i]=(Quantum *) RelinquishMagickMemory(pixels[i]); |
| 1657 | pixels=(Quantum **) RelinquishAlignedMemory(pixels); |
| 1658 | return(pixels); |
| 1659 | } |
| 1660 | |
| 1661 | static Quantum **AcquirePixelThreadSet(const size_t count) |
| 1662 | { |
| 1663 | register long |
| 1664 | i; |
| 1665 | |
| 1666 | Quantum |
| 1667 | **pixels; |
| 1668 | |
| 1669 | unsigned long |
| 1670 | number_threads; |
| 1671 | |
| 1672 | number_threads=GetOpenMPMaximumThreads(); |
| 1673 | pixels=(Quantum **) AcquireAlignedMemory(number_threads,sizeof(*pixels)); |
| 1674 | if (pixels == (Quantum **) NULL) |
| 1675 | return((Quantum **) NULL); |
| 1676 | (void) ResetMagickMemory(pixels,0,number_threads*sizeof(*pixels)); |
| 1677 | for (i=0; i < (long) number_threads; i++) |
| 1678 | { |
| 1679 | pixels[i]=(Quantum *) AcquireQuantumMemory(count,sizeof(**pixels)); |
| 1680 | if (pixels[i] == (Quantum *) NULL) |
| 1681 | return(DestroyPixelThreadSet(pixels)); |
| 1682 | } |
| 1683 | return(pixels); |
| 1684 | } |
| 1685 | |
| 1686 | static void Hull(const long x_offset,const long y_offset, |
| 1687 | const unsigned long columns,const unsigned long rows,Quantum *f,Quantum *g, |
| 1688 | const int polarity) |
| 1689 | { |
| 1690 | long |
| 1691 | y; |
| 1692 | |
| 1693 | MagickRealType |
| 1694 | v; |
| 1695 | |
| 1696 | register long |
| 1697 | x; |
| 1698 | |
| 1699 | register Quantum |
| 1700 | *p, |
| 1701 | *q, |
| 1702 | *r, |
| 1703 | *s; |
| 1704 | |
| 1705 | assert(f != (Quantum *) NULL); |
| 1706 | assert(g != (Quantum *) NULL); |
| 1707 | p=f+(columns+2); |
| 1708 | q=g+(columns+2); |
| 1709 | r=p+(y_offset*((long) columns+2)+x_offset); |
| 1710 | for (y=0; y < (long) rows; y++) |
| 1711 | { |
| 1712 | p++; |
| 1713 | q++; |
| 1714 | r++; |
| 1715 | if (polarity > 0) |
| 1716 | for (x=(long) columns; x != 0; x--) |
| 1717 | { |
| 1718 | v=(MagickRealType) (*p); |
| 1719 | if ((MagickRealType) *r >= (v+(MagickRealType) ScaleCharToQuantum(2))) |
| 1720 | v+=ScaleCharToQuantum(1); |
| 1721 | *q=(Quantum) v; |
| 1722 | p++; |
| 1723 | q++; |
| 1724 | r++; |
| 1725 | } |
| 1726 | else |
| 1727 | for (x=(long) columns; x != 0; x--) |
| 1728 | { |
| 1729 | v=(MagickRealType) (*p); |
| 1730 | if ((MagickRealType) *r <= (v-(MagickRealType) ScaleCharToQuantum(2))) |
| 1731 | v-=(long) ScaleCharToQuantum(1); |
| 1732 | *q=(Quantum) v; |
| 1733 | p++; |
| 1734 | q++; |
| 1735 | r++; |
| 1736 | } |
| 1737 | p++; |
| 1738 | q++; |
| 1739 | r++; |
| 1740 | } |
| 1741 | p=f+(columns+2); |
| 1742 | q=g+(columns+2); |
| 1743 | r=q+(y_offset*((long) columns+2)+x_offset); |
| 1744 | s=q-(y_offset*((long) columns+2)+x_offset); |
| 1745 | for (y=0; y < (long) rows; y++) |
| 1746 | { |
| 1747 | p++; |
| 1748 | q++; |
| 1749 | r++; |
| 1750 | s++; |
| 1751 | if (polarity > 0) |
| 1752 | for (x=(long) columns; x != 0; x--) |
| 1753 | { |
| 1754 | v=(MagickRealType) (*q); |
| 1755 | if (((MagickRealType) *s >= |
| 1756 | (v+(MagickRealType) ScaleCharToQuantum(2))) && |
| 1757 | ((MagickRealType) *r > v)) |
| 1758 | v+=ScaleCharToQuantum(1); |
| 1759 | *p=(Quantum) v; |
| 1760 | p++; |
| 1761 | q++; |
| 1762 | r++; |
| 1763 | s++; |
| 1764 | } |
| 1765 | else |
| 1766 | for (x=(long) columns; x != 0; x--) |
| 1767 | { |
| 1768 | v=(MagickRealType) (*q); |
| 1769 | if (((MagickRealType) *s <= |
| 1770 | (v-(MagickRealType) ScaleCharToQuantum(2))) && |
| 1771 | ((MagickRealType) *r < v)) |
| 1772 | v-=(MagickRealType) ScaleCharToQuantum(1); |
| 1773 | *p=(Quantum) v; |
| 1774 | p++; |
| 1775 | q++; |
| 1776 | r++; |
| 1777 | s++; |
| 1778 | } |
| 1779 | p++; |
| 1780 | q++; |
| 1781 | r++; |
| 1782 | s++; |
| 1783 | } |
| 1784 | } |
| 1785 | |
| 1786 | MagickExport Image *DespeckleImage(const Image *image,ExceptionInfo *exception) |
| 1787 | { |
| 1788 | #define DespeckleImageTag "Despeckle/Image" |
| 1789 | |
cristy | 2407fc2 | 2009-09-11 00:55:25 +0000 | [diff] [blame] | 1790 | CacheView |
| 1791 | *despeckle_view, |
| 1792 | *image_view; |
| 1793 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1794 | Image |
| 1795 | *despeckle_image; |
| 1796 | |
| 1797 | long |
| 1798 | channel; |
| 1799 | |
| 1800 | MagickBooleanType |
| 1801 | status; |
| 1802 | |
| 1803 | Quantum |
cristy | fa11211 | 2010-01-04 17:48:07 +0000 | [diff] [blame] | 1804 | **restrict buffers, |
| 1805 | **restrict pixels; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1806 | |
| 1807 | size_t |
| 1808 | length; |
| 1809 | |
| 1810 | static const int |
cristy | 691a29e | 2009-09-11 00:44:10 +0000 | [diff] [blame] | 1811 | X[4] = {0, 1, 1,-1}, |
| 1812 | Y[4] = {1, 0, 1, 1}; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1813 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1814 | /* |
| 1815 | Allocate despeckled image. |
| 1816 | */ |
| 1817 | assert(image != (const Image *) NULL); |
| 1818 | assert(image->signature == MagickSignature); |
| 1819 | if (image->debug != MagickFalse) |
| 1820 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1821 | assert(exception != (ExceptionInfo *) NULL); |
| 1822 | assert(exception->signature == MagickSignature); |
| 1823 | despeckle_image=CloneImage(image,image->columns,image->rows,MagickTrue, |
| 1824 | exception); |
| 1825 | if (despeckle_image == (Image *) NULL) |
| 1826 | return((Image *) NULL); |
| 1827 | if (SetImageStorageClass(despeckle_image,DirectClass) == MagickFalse) |
| 1828 | { |
| 1829 | InheritException(exception,&despeckle_image->exception); |
| 1830 | despeckle_image=DestroyImage(despeckle_image); |
| 1831 | return((Image *) NULL); |
| 1832 | } |
| 1833 | /* |
| 1834 | Allocate image buffers. |
| 1835 | */ |
| 1836 | length=(size_t) ((image->columns+2)*(image->rows+2)); |
| 1837 | pixels=AcquirePixelThreadSet(length); |
| 1838 | buffers=AcquirePixelThreadSet(length); |
| 1839 | if ((pixels == (Quantum **) NULL) || (buffers == (Quantum **) NULL)) |
| 1840 | { |
| 1841 | if (buffers != (Quantum **) NULL) |
| 1842 | buffers=DestroyPixelThreadSet(buffers); |
| 1843 | if (pixels != (Quantum **) NULL) |
| 1844 | pixels=DestroyPixelThreadSet(pixels); |
| 1845 | despeckle_image=DestroyImage(despeckle_image); |
| 1846 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1847 | } |
| 1848 | /* |
| 1849 | Reduce speckle in the image. |
| 1850 | */ |
| 1851 | status=MagickTrue; |
| 1852 | image_view=AcquireCacheView(image); |
| 1853 | despeckle_view=AcquireCacheView(despeckle_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 1854 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 1855 | #pragma omp parallel for schedule(dynamic,4) shared(status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1856 | #endif |
| 1857 | for (channel=0; channel <= 3; channel++) |
| 1858 | { |
| 1859 | long |
| 1860 | j, |
| 1861 | y; |
| 1862 | |
| 1863 | register long |
| 1864 | i, |
cristy | 691a29e | 2009-09-11 00:44:10 +0000 | [diff] [blame] | 1865 | id, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1866 | x; |
| 1867 | |
| 1868 | register Quantum |
| 1869 | *buffer, |
| 1870 | *pixel; |
| 1871 | |
| 1872 | if (status == MagickFalse) |
| 1873 | continue; |
cristy | 691a29e | 2009-09-11 00:44:10 +0000 | [diff] [blame] | 1874 | id=GetOpenMPThreadId(); |
| 1875 | pixel=pixels[id]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1876 | (void) ResetMagickMemory(pixel,0,length*sizeof(*pixel)); |
cristy | 691a29e | 2009-09-11 00:44:10 +0000 | [diff] [blame] | 1877 | buffer=buffers[id]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1878 | j=(long) image->columns+2; |
| 1879 | for (y=0; y < (long) image->rows; y++) |
| 1880 | { |
| 1881 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1882 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1883 | |
| 1884 | p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception); |
| 1885 | if (p == (const PixelPacket *) NULL) |
| 1886 | break; |
| 1887 | j++; |
| 1888 | for (x=0; x < (long) image->columns; x++) |
| 1889 | { |
| 1890 | switch (channel) |
| 1891 | { |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 1892 | case 0: pixel[j]=GetRedPixelComponent(p); break; |
| 1893 | case 1: pixel[j]=GetGreenPixelComponent(p); break; |
| 1894 | case 2: pixel[j]=GetBluePixelComponent(p); break; |
| 1895 | case 3: pixel[j]=GetOpacityPixelComponent(p); break; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1896 | default: break; |
| 1897 | } |
| 1898 | p++; |
| 1899 | j++; |
| 1900 | } |
| 1901 | j++; |
| 1902 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1903 | (void) ResetMagickMemory(buffer,0,length*sizeof(*buffer)); |
| 1904 | for (i=0; i < 4; i++) |
| 1905 | { |
| 1906 | Hull(X[i],Y[i],image->columns,image->rows,pixel,buffer,1); |
| 1907 | Hull(-X[i],-Y[i],image->columns,image->rows,pixel,buffer,1); |
| 1908 | Hull(-X[i],-Y[i],image->columns,image->rows,pixel,buffer,-1); |
| 1909 | Hull(X[i],Y[i],image->columns,image->rows,pixel,buffer,-1); |
| 1910 | } |
| 1911 | j=(long) image->columns+2; |
| 1912 | for (y=0; y < (long) image->rows; y++) |
| 1913 | { |
| 1914 | MagickBooleanType |
| 1915 | sync; |
| 1916 | |
| 1917 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1918 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1919 | |
| 1920 | q=GetCacheViewAuthenticPixels(despeckle_view,0,y,despeckle_image->columns, |
| 1921 | 1,exception); |
| 1922 | if (q == (PixelPacket *) NULL) |
| 1923 | break; |
| 1924 | j++; |
| 1925 | for (x=0; x < (long) image->columns; x++) |
| 1926 | { |
| 1927 | switch (channel) |
| 1928 | { |
| 1929 | case 0: q->red=pixel[j]; break; |
| 1930 | case 1: q->green=pixel[j]; break; |
| 1931 | case 2: q->blue=pixel[j]; break; |
| 1932 | case 3: q->opacity=pixel[j]; break; |
| 1933 | default: break; |
| 1934 | } |
| 1935 | q++; |
| 1936 | j++; |
| 1937 | } |
| 1938 | sync=SyncCacheViewAuthenticPixels(despeckle_view,exception); |
| 1939 | if (sync == MagickFalse) |
| 1940 | { |
| 1941 | status=MagickFalse; |
| 1942 | break; |
| 1943 | } |
| 1944 | j++; |
| 1945 | } |
| 1946 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 1947 | { |
| 1948 | MagickBooleanType |
| 1949 | proceed; |
| 1950 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 1951 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1952 | #pragma omp critical (MagickCore_DespeckleImage) |
| 1953 | #endif |
| 1954 | proceed=SetImageProgress(image,DespeckleImageTag,channel,3); |
| 1955 | if (proceed == MagickFalse) |
| 1956 | status=MagickFalse; |
| 1957 | } |
| 1958 | } |
| 1959 | despeckle_view=DestroyCacheView(despeckle_view); |
| 1960 | image_view=DestroyCacheView(image_view); |
| 1961 | buffers=DestroyPixelThreadSet(buffers); |
| 1962 | pixels=DestroyPixelThreadSet(pixels); |
| 1963 | despeckle_image->type=image->type; |
| 1964 | if (status == MagickFalse) |
| 1965 | despeckle_image=DestroyImage(despeckle_image); |
| 1966 | return(despeckle_image); |
| 1967 | } |
| 1968 | |
| 1969 | /* |
| 1970 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1971 | % % |
| 1972 | % % |
| 1973 | % % |
| 1974 | % E d g e I m a g e % |
| 1975 | % % |
| 1976 | % % |
| 1977 | % % |
| 1978 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1979 | % |
| 1980 | % EdgeImage() finds edges in an image. Radius defines the radius of the |
| 1981 | % convolution filter. Use a radius of 0 and EdgeImage() selects a suitable |
| 1982 | % radius for you. |
| 1983 | % |
| 1984 | % The format of the EdgeImage method is: |
| 1985 | % |
| 1986 | % Image *EdgeImage(const Image *image,const double radius, |
| 1987 | % ExceptionInfo *exception) |
| 1988 | % |
| 1989 | % A description of each parameter follows: |
| 1990 | % |
| 1991 | % o image: the image. |
| 1992 | % |
| 1993 | % o radius: the radius of the pixel neighborhood. |
| 1994 | % |
| 1995 | % o exception: return any errors or warnings in this structure. |
| 1996 | % |
| 1997 | */ |
| 1998 | MagickExport Image *EdgeImage(const Image *image,const double radius, |
| 1999 | ExceptionInfo *exception) |
| 2000 | { |
| 2001 | Image |
| 2002 | *edge_image; |
| 2003 | |
| 2004 | double |
| 2005 | *kernel; |
| 2006 | |
| 2007 | register long |
| 2008 | i; |
| 2009 | |
| 2010 | unsigned long |
| 2011 | width; |
| 2012 | |
| 2013 | assert(image != (const Image *) NULL); |
| 2014 | assert(image->signature == MagickSignature); |
| 2015 | if (image->debug != MagickFalse) |
| 2016 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2017 | assert(exception != (ExceptionInfo *) NULL); |
| 2018 | assert(exception->signature == MagickSignature); |
| 2019 | width=GetOptimalKernelWidth1D(radius,0.5); |
| 2020 | kernel=(double *) AcquireQuantumMemory((size_t) width,width*sizeof(*kernel)); |
| 2021 | if (kernel == (double *) NULL) |
| 2022 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 2023 | for (i=0; i < (long) (width*width); i++) |
| 2024 | kernel[i]=(-1.0); |
| 2025 | kernel[i/2]=(double) (width*width-1.0); |
| 2026 | edge_image=ConvolveImage(image,width,kernel,exception); |
| 2027 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 2028 | return(edge_image); |
| 2029 | } |
| 2030 | |
| 2031 | /* |
| 2032 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2033 | % % |
| 2034 | % % |
| 2035 | % % |
| 2036 | % E m b o s s I m a g e % |
| 2037 | % % |
| 2038 | % % |
| 2039 | % % |
| 2040 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2041 | % |
| 2042 | % EmbossImage() returns a grayscale image with a three-dimensional effect. |
| 2043 | % We convolve the image with a Gaussian operator of the given radius and |
| 2044 | % standard deviation (sigma). For reasonable results, radius should be |
| 2045 | % larger than sigma. Use a radius of 0 and Emboss() selects a suitable |
| 2046 | % radius for you. |
| 2047 | % |
| 2048 | % The format of the EmbossImage method is: |
| 2049 | % |
| 2050 | % Image *EmbossImage(const Image *image,const double radius, |
| 2051 | % const double sigma,ExceptionInfo *exception) |
| 2052 | % |
| 2053 | % A description of each parameter follows: |
| 2054 | % |
| 2055 | % o image: the image. |
| 2056 | % |
| 2057 | % o radius: the radius of the pixel neighborhood. |
| 2058 | % |
| 2059 | % o sigma: the standard deviation of the Gaussian, in pixels. |
| 2060 | % |
| 2061 | % o exception: return any errors or warnings in this structure. |
| 2062 | % |
| 2063 | */ |
| 2064 | MagickExport Image *EmbossImage(const Image *image,const double radius, |
| 2065 | const double sigma,ExceptionInfo *exception) |
| 2066 | { |
| 2067 | double |
| 2068 | *kernel; |
| 2069 | |
| 2070 | Image |
| 2071 | *emboss_image; |
| 2072 | |
| 2073 | long |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2074 | j, |
| 2075 | k, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2076 | u, |
| 2077 | v; |
| 2078 | |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2079 | register long |
| 2080 | i; |
| 2081 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2082 | unsigned long |
| 2083 | width; |
| 2084 | |
| 2085 | assert(image != (Image *) NULL); |
| 2086 | assert(image->signature == MagickSignature); |
| 2087 | if (image->debug != MagickFalse) |
| 2088 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2089 | assert(exception != (ExceptionInfo *) NULL); |
| 2090 | assert(exception->signature == MagickSignature); |
| 2091 | width=GetOptimalKernelWidth2D(radius,sigma); |
| 2092 | kernel=(double *) AcquireQuantumMemory((size_t) width,width*sizeof(*kernel)); |
| 2093 | if (kernel == (double *) NULL) |
| 2094 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2095 | j=(long) width/2; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2096 | k=j; |
| 2097 | i=0; |
| 2098 | for (v=(-j); v <= j; v++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2099 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2100 | for (u=(-j); u <= j; u++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2101 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2102 | kernel[i]=((u < 0) || (v < 0) ? -8.0 : 8.0)* |
| 2103 | exp(-((double) u*u+v*v)/(2.0*MagickSigma*MagickSigma))/ |
| 2104 | (2.0*MagickPI*MagickSigma*MagickSigma); |
| 2105 | if (u != k) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2106 | kernel[i]=0.0; |
| 2107 | i++; |
| 2108 | } |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2109 | k--; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2110 | } |
| 2111 | emboss_image=ConvolveImage(image,width,kernel,exception); |
| 2112 | if (emboss_image != (Image *) NULL) |
| 2113 | (void) EqualizeImage(emboss_image); |
| 2114 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 2115 | return(emboss_image); |
| 2116 | } |
| 2117 | |
| 2118 | /* |
| 2119 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2120 | % % |
| 2121 | % % |
| 2122 | % % |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2123 | % F i l t e r I m a g e % |
| 2124 | % % |
| 2125 | % % |
| 2126 | % % |
| 2127 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2128 | % |
| 2129 | % FilterImage() applies a custom convolution kernel to the image. |
| 2130 | % |
| 2131 | % The format of the FilterImage method is: |
| 2132 | % |
cristy | 2be1538 | 2010-01-21 02:38:03 +0000 | [diff] [blame] | 2133 | % Image *FilterImage(const Image *image,const KernelInfo *kernel, |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2134 | % ExceptionInfo *exception) |
| 2135 | % Image *FilterImageChannel(const Image *image,const ChannelType channel, |
cristy | 2be1538 | 2010-01-21 02:38:03 +0000 | [diff] [blame] | 2136 | % const KernelInfo *kernel,ExceptionInfo *exception) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2137 | % |
| 2138 | % A description of each parameter follows: |
| 2139 | % |
| 2140 | % o image: the image. |
| 2141 | % |
| 2142 | % o channel: the channel type. |
| 2143 | % |
| 2144 | % o kernel: the filtering kernel. |
| 2145 | % |
| 2146 | % o exception: return any errors or warnings in this structure. |
| 2147 | % |
| 2148 | */ |
| 2149 | |
cristy | 2be1538 | 2010-01-21 02:38:03 +0000 | [diff] [blame] | 2150 | MagickExport Image *FilterImage(const Image *image,const KernelInfo *kernel, |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2151 | ExceptionInfo *exception) |
| 2152 | { |
| 2153 | Image |
| 2154 | *filter_image; |
| 2155 | |
| 2156 | filter_image=FilterImageChannel(image,DefaultChannels,kernel,exception); |
| 2157 | return(filter_image); |
| 2158 | } |
| 2159 | |
| 2160 | MagickExport Image *FilterImageChannel(const Image *image, |
cristy | 2be1538 | 2010-01-21 02:38:03 +0000 | [diff] [blame] | 2161 | const ChannelType channel,const KernelInfo *kernel,ExceptionInfo *exception) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2162 | { |
| 2163 | #define FilterImageTag "Filter/Image" |
| 2164 | |
| 2165 | CacheView |
| 2166 | *filter_view, |
| 2167 | *image_view; |
| 2168 | |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2169 | Image |
| 2170 | *filter_image; |
| 2171 | |
| 2172 | long |
| 2173 | progress, |
| 2174 | y; |
| 2175 | |
| 2176 | MagickBooleanType |
| 2177 | status; |
| 2178 | |
| 2179 | MagickPixelPacket |
| 2180 | bias; |
| 2181 | |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2182 | /* |
| 2183 | Initialize filter image attributes. |
| 2184 | */ |
| 2185 | assert(image != (Image *) NULL); |
| 2186 | assert(image->signature == MagickSignature); |
| 2187 | if (image->debug != MagickFalse) |
| 2188 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2189 | assert(exception != (ExceptionInfo *) NULL); |
| 2190 | assert(exception->signature == MagickSignature); |
| 2191 | if ((kernel->width % 2) == 0) |
| 2192 | ThrowImageException(OptionError,"KernelWidthMustBeAnOddNumber"); |
| 2193 | filter_image=CloneImage(image,0,0,MagickTrue,exception); |
| 2194 | if (filter_image == (Image *) NULL) |
| 2195 | return((Image *) NULL); |
| 2196 | if (SetImageStorageClass(filter_image,DirectClass) == MagickFalse) |
| 2197 | { |
| 2198 | InheritException(exception,&filter_image->exception); |
| 2199 | filter_image=DestroyImage(filter_image); |
| 2200 | return((Image *) NULL); |
| 2201 | } |
| 2202 | if (image->debug != MagickFalse) |
| 2203 | { |
| 2204 | char |
| 2205 | format[MaxTextExtent], |
| 2206 | *message; |
| 2207 | |
| 2208 | long |
| 2209 | u, |
| 2210 | v; |
| 2211 | |
| 2212 | register const double |
| 2213 | *k; |
| 2214 | |
| 2215 | (void) LogMagickEvent(TransformEvent,GetMagickModule(), |
| 2216 | " FilterImage with %ldx%ld kernel:",kernel->width,kernel->height); |
| 2217 | message=AcquireString(""); |
| 2218 | k=kernel->values; |
| 2219 | for (v=0; v < (long) kernel->height; v++) |
| 2220 | { |
| 2221 | *message='\0'; |
| 2222 | (void) FormatMagickString(format,MaxTextExtent,"%ld: ",v); |
| 2223 | (void) ConcatenateString(&message,format); |
| 2224 | for (u=0; u < (long) kernel->width; u++) |
| 2225 | { |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 2226 | (void) FormatMagickString(format,MaxTextExtent,"%g ",*k++); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2227 | (void) ConcatenateString(&message,format); |
| 2228 | } |
| 2229 | (void) LogMagickEvent(TransformEvent,GetMagickModule(),"%s",message); |
| 2230 | } |
| 2231 | message=DestroyString(message); |
| 2232 | } |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2233 | status=AccelerateConvolveImage(image,kernel,filter_image,exception); |
cristy | d43a46b | 2010-01-21 02:13:41 +0000 | [diff] [blame] | 2234 | if (status == MagickTrue) |
| 2235 | return(filter_image); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2236 | /* |
| 2237 | Filter image. |
| 2238 | */ |
| 2239 | status=MagickTrue; |
| 2240 | progress=0; |
| 2241 | GetMagickPixelPacket(image,&bias); |
| 2242 | SetMagickPixelPacketBias(image,&bias); |
| 2243 | image_view=AcquireCacheView(image); |
| 2244 | filter_view=AcquireCacheView(filter_image); |
| 2245 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 2246 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
| 2247 | #endif |
| 2248 | for (y=0; y < (long) image->rows; y++) |
| 2249 | { |
| 2250 | MagickBooleanType |
| 2251 | sync; |
| 2252 | |
| 2253 | register const IndexPacket |
| 2254 | *restrict indexes; |
| 2255 | |
| 2256 | register const PixelPacket |
| 2257 | *restrict p; |
| 2258 | |
| 2259 | register IndexPacket |
| 2260 | *restrict filter_indexes; |
| 2261 | |
| 2262 | register long |
| 2263 | x; |
| 2264 | |
| 2265 | register PixelPacket |
| 2266 | *restrict q; |
| 2267 | |
| 2268 | if (status == MagickFalse) |
| 2269 | continue; |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2270 | p=GetCacheViewVirtualPixels(image_view,-((long) kernel->width/2L), |
| 2271 | y-(long) (kernel->height/2L),image->columns+kernel->width,kernel->height, |
| 2272 | exception); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2273 | q=GetCacheViewAuthenticPixels(filter_view,0,y,filter_image->columns,1, |
| 2274 | exception); |
| 2275 | if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 2276 | { |
| 2277 | status=MagickFalse; |
| 2278 | continue; |
| 2279 | } |
| 2280 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 2281 | filter_indexes=GetCacheViewAuthenticIndexQueue(filter_view); |
| 2282 | for (x=0; x < (long) image->columns; x++) |
| 2283 | { |
| 2284 | long |
| 2285 | v; |
| 2286 | |
| 2287 | MagickPixelPacket |
| 2288 | pixel; |
| 2289 | |
| 2290 | register const double |
| 2291 | *restrict k; |
| 2292 | |
| 2293 | register const PixelPacket |
| 2294 | *restrict kernel_pixels; |
| 2295 | |
| 2296 | register long |
| 2297 | u; |
| 2298 | |
| 2299 | pixel=bias; |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2300 | k=kernel->values; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2301 | kernel_pixels=p; |
| 2302 | if (((channel & OpacityChannel) == 0) || (image->matte == MagickFalse)) |
| 2303 | { |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2304 | for (v=0; v < (long) kernel->width; v++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2305 | { |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2306 | for (u=0; u < (long) kernel->height; u++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2307 | { |
| 2308 | pixel.red+=(*k)*kernel_pixels[u].red; |
| 2309 | pixel.green+=(*k)*kernel_pixels[u].green; |
| 2310 | pixel.blue+=(*k)*kernel_pixels[u].blue; |
| 2311 | k++; |
| 2312 | } |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2313 | kernel_pixels+=image->columns+kernel->width; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2314 | } |
| 2315 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 2316 | SetRedPixelComponent(q,ClampRedPixelComponent(&pixel)); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2317 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 2318 | SetGreenPixelComponent(q,ClampGreenPixelComponent(&pixel)); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2319 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 2320 | SetBluePixelComponent(q,ClampBluePixelComponent(&pixel)); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2321 | if ((channel & OpacityChannel) != 0) |
| 2322 | { |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2323 | k=kernel->values; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2324 | kernel_pixels=p; |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2325 | for (v=0; v < (long) kernel->width; v++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2326 | { |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2327 | for (u=0; u < (long) kernel->height; u++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2328 | { |
| 2329 | pixel.opacity+=(*k)*kernel_pixels[u].opacity; |
| 2330 | k++; |
| 2331 | } |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2332 | kernel_pixels+=image->columns+kernel->width; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2333 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 2334 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2335 | } |
| 2336 | if (((channel & IndexChannel) != 0) && |
| 2337 | (image->colorspace == CMYKColorspace)) |
| 2338 | { |
| 2339 | register const IndexPacket |
| 2340 | *restrict kernel_indexes; |
| 2341 | |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2342 | k=kernel->values; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2343 | kernel_indexes=indexes; |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2344 | for (v=0; v < (long) kernel->width; v++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2345 | { |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2346 | for (u=0; u < (long) kernel->height; u++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2347 | { |
| 2348 | pixel.index+=(*k)*kernel_indexes[u]; |
| 2349 | k++; |
| 2350 | } |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2351 | kernel_indexes+=image->columns+kernel->width; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2352 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 2353 | filter_indexes[x]=ClampToQuantum(pixel.index); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2354 | } |
| 2355 | } |
| 2356 | else |
| 2357 | { |
| 2358 | MagickRealType |
| 2359 | alpha, |
| 2360 | gamma; |
| 2361 | |
| 2362 | gamma=0.0; |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2363 | for (v=0; v < (long) kernel->width; v++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2364 | { |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2365 | for (u=0; u < (long) kernel->height; u++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2366 | { |
| 2367 | alpha=(MagickRealType) (QuantumScale*(QuantumRange- |
| 2368 | kernel_pixels[u].opacity)); |
| 2369 | pixel.red+=(*k)*alpha*kernel_pixels[u].red; |
| 2370 | pixel.green+=(*k)*alpha*kernel_pixels[u].green; |
| 2371 | pixel.blue+=(*k)*alpha*kernel_pixels[u].blue; |
| 2372 | gamma+=(*k)*alpha; |
| 2373 | k++; |
| 2374 | } |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2375 | kernel_pixels+=image->columns+kernel->width; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2376 | } |
| 2377 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 2378 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 2379 | q->red=ClampToQuantum(gamma*GetRedPixelComponent(&pixel)); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2380 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 2381 | q->green=ClampToQuantum(gamma*GetGreenPixelComponent(&pixel)); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2382 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 2383 | q->blue=ClampToQuantum(gamma*GetBluePixelComponent(&pixel)); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2384 | if ((channel & OpacityChannel) != 0) |
| 2385 | { |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2386 | k=kernel->values; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2387 | kernel_pixels=p; |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2388 | for (v=0; v < (long) kernel->width; v++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2389 | { |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2390 | for (u=0; u < (long) kernel->height; u++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2391 | { |
| 2392 | pixel.opacity+=(*k)*kernel_pixels[u].opacity; |
| 2393 | k++; |
| 2394 | } |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2395 | kernel_pixels+=image->columns+kernel->width; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2396 | } |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 2397 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2398 | } |
| 2399 | if (((channel & IndexChannel) != 0) && |
| 2400 | (image->colorspace == CMYKColorspace)) |
| 2401 | { |
| 2402 | register const IndexPacket |
| 2403 | *restrict kernel_indexes; |
| 2404 | |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2405 | k=kernel->values; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2406 | kernel_pixels=p; |
| 2407 | kernel_indexes=indexes; |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2408 | for (v=0; v < (long) kernel->width; v++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2409 | { |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2410 | for (u=0; u < (long) kernel->height; u++) |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2411 | { |
| 2412 | alpha=(MagickRealType) (QuantumScale*(QuantumRange- |
| 2413 | kernel_pixels[u].opacity)); |
| 2414 | pixel.index+=(*k)*alpha*kernel_indexes[u]; |
| 2415 | k++; |
| 2416 | } |
cristy | 36826ab | 2010-03-06 01:29:30 +0000 | [diff] [blame^] | 2417 | kernel_pixels+=image->columns+kernel->width; |
| 2418 | kernel_indexes+=image->columns+kernel->width; |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2419 | } |
cristy | 2115aea | 2010-01-09 23:16:08 +0000 | [diff] [blame] | 2420 | filter_indexes[x]=ClampToQuantum(gamma* |
| 2421 | GetIndexPixelComponent(&pixel)); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2422 | } |
| 2423 | } |
| 2424 | p++; |
| 2425 | q++; |
| 2426 | } |
| 2427 | sync=SyncCacheViewAuthenticPixels(filter_view,exception); |
| 2428 | if (sync == MagickFalse) |
| 2429 | status=MagickFalse; |
| 2430 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 2431 | { |
| 2432 | MagickBooleanType |
| 2433 | proceed; |
| 2434 | |
| 2435 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 2436 | #pragma omp critical (MagickCore_FilterImageChannel) |
| 2437 | #endif |
| 2438 | proceed=SetImageProgress(image,FilterImageTag,progress++,image->rows); |
| 2439 | if (proceed == MagickFalse) |
| 2440 | status=MagickFalse; |
| 2441 | } |
| 2442 | } |
| 2443 | filter_image->type=image->type; |
| 2444 | filter_view=DestroyCacheView(filter_view); |
| 2445 | image_view=DestroyCacheView(image_view); |
cristy | 56a9e51 | 2010-01-06 18:18:55 +0000 | [diff] [blame] | 2446 | if (status == MagickFalse) |
| 2447 | filter_image=DestroyImage(filter_image); |
| 2448 | return(filter_image); |
| 2449 | } |
| 2450 | |
| 2451 | /* |
| 2452 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2453 | % % |
| 2454 | % % |
| 2455 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2456 | % G a u s s i a n B l u r I m a g e % |
| 2457 | % % |
| 2458 | % % |
| 2459 | % % |
| 2460 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2461 | % |
| 2462 | % GaussianBlurImage() blurs an image. We convolve the image with a |
| 2463 | % Gaussian operator of the given radius and standard deviation (sigma). |
| 2464 | % For reasonable results, the radius should be larger than sigma. Use a |
| 2465 | % radius of 0 and GaussianBlurImage() selects a suitable radius for you |
| 2466 | % |
| 2467 | % The format of the GaussianBlurImage method is: |
| 2468 | % |
| 2469 | % Image *GaussianBlurImage(const Image *image,onst double radius, |
| 2470 | % const double sigma,ExceptionInfo *exception) |
| 2471 | % Image *GaussianBlurImageChannel(const Image *image, |
| 2472 | % const ChannelType channel,const double radius,const double sigma, |
| 2473 | % ExceptionInfo *exception) |
| 2474 | % |
| 2475 | % A description of each parameter follows: |
| 2476 | % |
| 2477 | % o image: the image. |
| 2478 | % |
| 2479 | % o channel: the channel type. |
| 2480 | % |
| 2481 | % o radius: the radius of the Gaussian, in pixels, not counting the center |
| 2482 | % pixel. |
| 2483 | % |
| 2484 | % o sigma: the standard deviation of the Gaussian, in pixels. |
| 2485 | % |
| 2486 | % o exception: return any errors or warnings in this structure. |
| 2487 | % |
| 2488 | */ |
| 2489 | |
| 2490 | MagickExport Image *GaussianBlurImage(const Image *image,const double radius, |
| 2491 | const double sigma,ExceptionInfo *exception) |
| 2492 | { |
| 2493 | Image |
| 2494 | *blur_image; |
| 2495 | |
| 2496 | blur_image=GaussianBlurImageChannel(image,DefaultChannels,radius,sigma, |
| 2497 | exception); |
| 2498 | return(blur_image); |
| 2499 | } |
| 2500 | |
| 2501 | MagickExport Image *GaussianBlurImageChannel(const Image *image, |
| 2502 | const ChannelType channel,const double radius,const double sigma, |
| 2503 | ExceptionInfo *exception) |
| 2504 | { |
| 2505 | double |
| 2506 | *kernel; |
| 2507 | |
| 2508 | Image |
| 2509 | *blur_image; |
| 2510 | |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2511 | long |
| 2512 | j, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2513 | u, |
| 2514 | v; |
| 2515 | |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2516 | register long |
| 2517 | i; |
| 2518 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2519 | unsigned long |
| 2520 | width; |
| 2521 | |
| 2522 | assert(image != (const Image *) NULL); |
| 2523 | assert(image->signature == MagickSignature); |
| 2524 | if (image->debug != MagickFalse) |
| 2525 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2526 | assert(exception != (ExceptionInfo *) NULL); |
| 2527 | assert(exception->signature == MagickSignature); |
| 2528 | width=GetOptimalKernelWidth2D(radius,sigma); |
| 2529 | kernel=(double *) AcquireQuantumMemory((size_t) width,width*sizeof(*kernel)); |
| 2530 | if (kernel == (double *) NULL) |
| 2531 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2532 | j=(long) width/2; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2533 | i=0; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2534 | for (v=(-j); v <= j; v++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2535 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 2536 | for (u=(-j); u <= j; u++) |
| 2537 | kernel[i++]=exp(-((double) u*u+v*v)/(2.0*MagickSigma*MagickSigma))/ |
| 2538 | (2.0*MagickPI*MagickSigma*MagickSigma); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2539 | } |
| 2540 | blur_image=ConvolveImageChannel(image,channel,width,kernel,exception); |
| 2541 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 2542 | return(blur_image); |
| 2543 | } |
| 2544 | |
| 2545 | /* |
| 2546 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2547 | % % |
| 2548 | % % |
| 2549 | % % |
| 2550 | % M e d i a n F i l t e r I m a g e % |
| 2551 | % % |
| 2552 | % % |
| 2553 | % % |
| 2554 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2555 | % |
| 2556 | % MedianFilterImage() applies a digital filter that improves the quality |
| 2557 | % of a noisy image. Each pixel is replaced by the median in a set of |
| 2558 | % neighboring pixels as defined by radius. |
| 2559 | % |
| 2560 | % The algorithm was contributed by Mike Edmonds and implements an insertion |
| 2561 | % sort for selecting median color-channel values. For more on this algorithm |
| 2562 | % see "Skip Lists: A probabilistic Alternative to Balanced Trees" by William |
| 2563 | % Pugh in the June 1990 of Communications of the ACM. |
| 2564 | % |
| 2565 | % The format of the MedianFilterImage method is: |
| 2566 | % |
| 2567 | % Image *MedianFilterImage(const Image *image,const double radius, |
| 2568 | % ExceptionInfo *exception) |
| 2569 | % |
| 2570 | % A description of each parameter follows: |
| 2571 | % |
| 2572 | % o image: the image. |
| 2573 | % |
| 2574 | % o radius: the radius of the pixel neighborhood. |
| 2575 | % |
| 2576 | % o exception: return any errors or warnings in this structure. |
| 2577 | % |
| 2578 | */ |
| 2579 | |
| 2580 | #define MedianListChannels 5 |
| 2581 | |
| 2582 | typedef struct _MedianListNode |
| 2583 | { |
| 2584 | unsigned long |
| 2585 | next[9], |
| 2586 | count, |
| 2587 | signature; |
| 2588 | } MedianListNode; |
| 2589 | |
| 2590 | typedef struct _MedianSkipList |
| 2591 | { |
| 2592 | long |
| 2593 | level; |
| 2594 | |
| 2595 | MedianListNode |
| 2596 | *nodes; |
| 2597 | } MedianSkipList; |
| 2598 | |
| 2599 | typedef struct _MedianPixelList |
| 2600 | { |
| 2601 | unsigned long |
| 2602 | center, |
| 2603 | seed, |
| 2604 | signature; |
| 2605 | |
| 2606 | MedianSkipList |
| 2607 | lists[MedianListChannels]; |
| 2608 | } MedianPixelList; |
| 2609 | |
| 2610 | static MedianPixelList *DestroyMedianPixelList(MedianPixelList *pixel_list) |
| 2611 | { |
| 2612 | register long |
| 2613 | i; |
| 2614 | |
| 2615 | if (pixel_list == (MedianPixelList *) NULL) |
| 2616 | return((MedianPixelList *) NULL); |
| 2617 | for (i=0; i < MedianListChannels; i++) |
| 2618 | if (pixel_list->lists[i].nodes != (MedianListNode *) NULL) |
| 2619 | pixel_list->lists[i].nodes=(MedianListNode *) RelinquishMagickMemory( |
| 2620 | pixel_list->lists[i].nodes); |
| 2621 | pixel_list=(MedianPixelList *) RelinquishAlignedMemory(pixel_list); |
| 2622 | return(pixel_list); |
| 2623 | } |
| 2624 | |
| 2625 | static MedianPixelList **DestroyMedianPixelListThreadSet( |
| 2626 | MedianPixelList **pixel_list) |
| 2627 | { |
| 2628 | register long |
| 2629 | i; |
| 2630 | |
| 2631 | assert(pixel_list != (MedianPixelList **) NULL); |
| 2632 | for (i=0; i < (long) GetOpenMPMaximumThreads(); i++) |
| 2633 | if (pixel_list[i] != (MedianPixelList *) NULL) |
| 2634 | pixel_list[i]=DestroyMedianPixelList(pixel_list[i]); |
| 2635 | pixel_list=(MedianPixelList **) RelinquishAlignedMemory(pixel_list); |
| 2636 | return(pixel_list); |
| 2637 | } |
| 2638 | |
| 2639 | static MedianPixelList *AcquireMedianPixelList(const unsigned long width) |
| 2640 | { |
| 2641 | MedianPixelList |
| 2642 | *pixel_list; |
| 2643 | |
| 2644 | register long |
| 2645 | i; |
| 2646 | |
| 2647 | pixel_list=(MedianPixelList *) AcquireAlignedMemory(1,sizeof(*pixel_list)); |
| 2648 | if (pixel_list == (MedianPixelList *) NULL) |
| 2649 | return(pixel_list); |
| 2650 | (void) ResetMagickMemory((void *) pixel_list,0,sizeof(*pixel_list)); |
| 2651 | pixel_list->center=width*width/2; |
| 2652 | for (i=0; i < MedianListChannels; i++) |
| 2653 | { |
| 2654 | pixel_list->lists[i].nodes=(MedianListNode *) AcquireQuantumMemory(65537UL, |
| 2655 | sizeof(*pixel_list->lists[i].nodes)); |
| 2656 | if (pixel_list->lists[i].nodes == (MedianListNode *) NULL) |
| 2657 | return(DestroyMedianPixelList(pixel_list)); |
| 2658 | (void) ResetMagickMemory(pixel_list->lists[i].nodes,0,65537UL* |
| 2659 | sizeof(*pixel_list->lists[i].nodes)); |
| 2660 | } |
| 2661 | pixel_list->signature=MagickSignature; |
| 2662 | return(pixel_list); |
| 2663 | } |
| 2664 | |
| 2665 | static MedianPixelList **AcquireMedianPixelListThreadSet( |
| 2666 | const unsigned long width) |
| 2667 | { |
| 2668 | register long |
| 2669 | i; |
| 2670 | |
| 2671 | MedianPixelList |
| 2672 | **pixel_list; |
| 2673 | |
| 2674 | unsigned long |
| 2675 | number_threads; |
| 2676 | |
| 2677 | number_threads=GetOpenMPMaximumThreads(); |
| 2678 | pixel_list=(MedianPixelList **) AcquireAlignedMemory(number_threads, |
| 2679 | sizeof(*pixel_list)); |
| 2680 | if (pixel_list == (MedianPixelList **) NULL) |
| 2681 | return((MedianPixelList **) NULL); |
| 2682 | (void) ResetMagickMemory(pixel_list,0,number_threads*sizeof(*pixel_list)); |
| 2683 | for (i=0; i < (long) number_threads; i++) |
| 2684 | { |
| 2685 | pixel_list[i]=AcquireMedianPixelList(width); |
| 2686 | if (pixel_list[i] == (MedianPixelList *) NULL) |
| 2687 | return(DestroyMedianPixelListThreadSet(pixel_list)); |
| 2688 | } |
| 2689 | return(pixel_list); |
| 2690 | } |
| 2691 | |
| 2692 | static void AddNodeMedianPixelList(MedianPixelList *pixel_list, |
| 2693 | const long channel,const unsigned long color) |
| 2694 | { |
| 2695 | register long |
| 2696 | level; |
| 2697 | |
| 2698 | register MedianSkipList |
| 2699 | *list; |
| 2700 | |
| 2701 | unsigned long |
| 2702 | search, |
| 2703 | update[9]; |
| 2704 | |
| 2705 | /* |
| 2706 | Initialize the node. |
| 2707 | */ |
| 2708 | list=pixel_list->lists+channel; |
| 2709 | list->nodes[color].signature=pixel_list->signature; |
| 2710 | list->nodes[color].count=1; |
| 2711 | /* |
| 2712 | Determine where it belongs in the list. |
| 2713 | */ |
| 2714 | search=65536UL; |
| 2715 | for (level=list->level; level >= 0; level--) |
| 2716 | { |
| 2717 | while (list->nodes[search].next[level] < color) |
| 2718 | search=list->nodes[search].next[level]; |
| 2719 | update[level]=search; |
| 2720 | } |
| 2721 | /* |
| 2722 | Generate a pseudo-random level for this node. |
| 2723 | */ |
| 2724 | for (level=0; ; level++) |
| 2725 | { |
| 2726 | pixel_list->seed=(pixel_list->seed*42893621L)+1L; |
| 2727 | if ((pixel_list->seed & 0x300) != 0x300) |
| 2728 | break; |
| 2729 | } |
| 2730 | if (level > 8) |
| 2731 | level=8; |
| 2732 | if (level > (list->level+2)) |
| 2733 | level=list->level+2; |
| 2734 | /* |
| 2735 | If we're raising the list's level, link back to the root node. |
| 2736 | */ |
| 2737 | while (level > list->level) |
| 2738 | { |
| 2739 | list->level++; |
| 2740 | update[list->level]=65536UL; |
| 2741 | } |
| 2742 | /* |
| 2743 | Link the node into the skip-list. |
| 2744 | */ |
| 2745 | do |
| 2746 | { |
| 2747 | list->nodes[color].next[level]=list->nodes[update[level]].next[level]; |
| 2748 | list->nodes[update[level]].next[level]=color; |
| 2749 | } |
| 2750 | while (level-- > 0); |
| 2751 | } |
| 2752 | |
| 2753 | static MagickPixelPacket GetMedianPixelList(MedianPixelList *pixel_list) |
| 2754 | { |
| 2755 | MagickPixelPacket |
| 2756 | pixel; |
| 2757 | |
| 2758 | register long |
| 2759 | channel; |
| 2760 | |
| 2761 | register MedianSkipList |
| 2762 | *list; |
| 2763 | |
| 2764 | unsigned long |
| 2765 | center, |
| 2766 | color, |
| 2767 | count; |
| 2768 | |
| 2769 | unsigned short |
| 2770 | channels[MedianListChannels]; |
| 2771 | |
| 2772 | /* |
| 2773 | Find the median value for each of the color. |
| 2774 | */ |
| 2775 | center=pixel_list->center; |
| 2776 | for (channel=0; channel < 5; channel++) |
| 2777 | { |
| 2778 | list=pixel_list->lists+channel; |
| 2779 | color=65536UL; |
| 2780 | count=0; |
| 2781 | do |
| 2782 | { |
| 2783 | color=list->nodes[color].next[0]; |
| 2784 | count+=list->nodes[color].count; |
| 2785 | } |
| 2786 | while (count <= center); |
| 2787 | channels[channel]=(unsigned short) color; |
| 2788 | } |
| 2789 | GetMagickPixelPacket((const Image *) NULL,&pixel); |
| 2790 | pixel.red=(MagickRealType) ScaleShortToQuantum(channels[0]); |
| 2791 | pixel.green=(MagickRealType) ScaleShortToQuantum(channels[1]); |
| 2792 | pixel.blue=(MagickRealType) ScaleShortToQuantum(channels[2]); |
| 2793 | pixel.opacity=(MagickRealType) ScaleShortToQuantum(channels[3]); |
| 2794 | pixel.index=(MagickRealType) ScaleShortToQuantum(channels[4]); |
| 2795 | return(pixel); |
| 2796 | } |
| 2797 | |
| 2798 | static inline void InsertMedianPixelList(const Image *image, |
| 2799 | const PixelPacket *pixel,const IndexPacket *indexes, |
| 2800 | MedianPixelList *pixel_list) |
| 2801 | { |
| 2802 | unsigned long |
| 2803 | signature; |
| 2804 | |
| 2805 | unsigned short |
| 2806 | index; |
| 2807 | |
| 2808 | index=ScaleQuantumToShort(pixel->red); |
| 2809 | signature=pixel_list->lists[0].nodes[index].signature; |
| 2810 | if (signature == pixel_list->signature) |
| 2811 | pixel_list->lists[0].nodes[index].count++; |
| 2812 | else |
| 2813 | AddNodeMedianPixelList(pixel_list,0,index); |
| 2814 | index=ScaleQuantumToShort(pixel->green); |
| 2815 | signature=pixel_list->lists[1].nodes[index].signature; |
| 2816 | if (signature == pixel_list->signature) |
| 2817 | pixel_list->lists[1].nodes[index].count++; |
| 2818 | else |
| 2819 | AddNodeMedianPixelList(pixel_list,1,index); |
| 2820 | index=ScaleQuantumToShort(pixel->blue); |
| 2821 | signature=pixel_list->lists[2].nodes[index].signature; |
| 2822 | if (signature == pixel_list->signature) |
| 2823 | pixel_list->lists[2].nodes[index].count++; |
| 2824 | else |
| 2825 | AddNodeMedianPixelList(pixel_list,2,index); |
| 2826 | index=ScaleQuantumToShort(pixel->opacity); |
| 2827 | signature=pixel_list->lists[3].nodes[index].signature; |
| 2828 | if (signature == pixel_list->signature) |
| 2829 | pixel_list->lists[3].nodes[index].count++; |
| 2830 | else |
| 2831 | AddNodeMedianPixelList(pixel_list,3,index); |
| 2832 | if (image->colorspace == CMYKColorspace) |
| 2833 | index=ScaleQuantumToShort(*indexes); |
| 2834 | signature=pixel_list->lists[4].nodes[index].signature; |
| 2835 | if (signature == pixel_list->signature) |
| 2836 | pixel_list->lists[4].nodes[index].count++; |
| 2837 | else |
| 2838 | AddNodeMedianPixelList(pixel_list,4,index); |
| 2839 | } |
| 2840 | |
| 2841 | static void ResetMedianPixelList(MedianPixelList *pixel_list) |
| 2842 | { |
| 2843 | int |
| 2844 | level; |
| 2845 | |
| 2846 | register long |
| 2847 | channel; |
| 2848 | |
| 2849 | register MedianListNode |
| 2850 | *root; |
| 2851 | |
| 2852 | register MedianSkipList |
| 2853 | *list; |
| 2854 | |
| 2855 | /* |
| 2856 | Reset the skip-list. |
| 2857 | */ |
| 2858 | for (channel=0; channel < 5; channel++) |
| 2859 | { |
| 2860 | list=pixel_list->lists+channel; |
| 2861 | root=list->nodes+65536UL; |
| 2862 | list->level=0; |
| 2863 | for (level=0; level < 9; level++) |
| 2864 | root->next[level]=65536UL; |
| 2865 | } |
| 2866 | pixel_list->seed=pixel_list->signature++; |
| 2867 | } |
| 2868 | |
| 2869 | MagickExport Image *MedianFilterImage(const Image *image,const double radius, |
| 2870 | ExceptionInfo *exception) |
| 2871 | { |
| 2872 | #define MedianFilterImageTag "MedianFilter/Image" |
| 2873 | |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 2874 | CacheView |
| 2875 | *image_view, |
| 2876 | *median_view; |
| 2877 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2878 | Image |
| 2879 | *median_image; |
| 2880 | |
| 2881 | long |
| 2882 | progress, |
| 2883 | y; |
| 2884 | |
| 2885 | MagickBooleanType |
| 2886 | status; |
| 2887 | |
| 2888 | MedianPixelList |
cristy | fa11211 | 2010-01-04 17:48:07 +0000 | [diff] [blame] | 2889 | **restrict pixel_list; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2890 | |
| 2891 | unsigned long |
| 2892 | width; |
| 2893 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2894 | /* |
| 2895 | Initialize median image attributes. |
| 2896 | */ |
| 2897 | assert(image != (Image *) NULL); |
| 2898 | assert(image->signature == MagickSignature); |
| 2899 | if (image->debug != MagickFalse) |
| 2900 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2901 | assert(exception != (ExceptionInfo *) NULL); |
| 2902 | assert(exception->signature == MagickSignature); |
| 2903 | width=GetOptimalKernelWidth2D(radius,0.5); |
| 2904 | if ((image->columns < width) || (image->rows < width)) |
| 2905 | ThrowImageException(OptionError,"ImageSmallerThanKernelRadius"); |
| 2906 | median_image=CloneImage(image,image->columns,image->rows,MagickTrue, |
| 2907 | exception); |
| 2908 | if (median_image == (Image *) NULL) |
| 2909 | return((Image *) NULL); |
| 2910 | if (SetImageStorageClass(median_image,DirectClass) == MagickFalse) |
| 2911 | { |
| 2912 | InheritException(exception,&median_image->exception); |
| 2913 | median_image=DestroyImage(median_image); |
| 2914 | return((Image *) NULL); |
| 2915 | } |
| 2916 | pixel_list=AcquireMedianPixelListThreadSet(width); |
| 2917 | if (pixel_list == (MedianPixelList **) NULL) |
| 2918 | { |
| 2919 | median_image=DestroyImage(median_image); |
| 2920 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 2921 | } |
| 2922 | /* |
| 2923 | Median filter each image row. |
| 2924 | */ |
| 2925 | status=MagickTrue; |
| 2926 | progress=0; |
| 2927 | image_view=AcquireCacheView(image); |
| 2928 | median_view=AcquireCacheView(median_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 2929 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 2930 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2931 | #endif |
| 2932 | for (y=0; y < (long) median_image->rows; y++) |
| 2933 | { |
| 2934 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 2935 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2936 | |
| 2937 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 2938 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2939 | |
| 2940 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 2941 | *restrict median_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2942 | |
| 2943 | register long |
| 2944 | id, |
| 2945 | x; |
| 2946 | |
| 2947 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 2948 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2949 | |
| 2950 | if (status == MagickFalse) |
| 2951 | continue; |
| 2952 | p=GetCacheViewVirtualPixels(image_view,-((long) width/2L),y-(long) (width/ |
| 2953 | 2L),image->columns+width,width,exception); |
| 2954 | q=QueueCacheViewAuthenticPixels(median_view,0,y,median_image->columns,1, |
| 2955 | exception); |
| 2956 | if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 2957 | { |
| 2958 | status=MagickFalse; |
| 2959 | continue; |
| 2960 | } |
| 2961 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 2962 | median_indexes=GetCacheViewAuthenticIndexQueue(median_view); |
| 2963 | id=GetOpenMPThreadId(); |
| 2964 | for (x=0; x < (long) median_image->columns; x++) |
| 2965 | { |
| 2966 | MagickPixelPacket |
| 2967 | pixel; |
| 2968 | |
| 2969 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 2970 | *restrict r; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2971 | |
| 2972 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 2973 | *restrict s; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2974 | |
| 2975 | register long |
| 2976 | u, |
| 2977 | v; |
| 2978 | |
| 2979 | r=p; |
| 2980 | s=indexes+x; |
| 2981 | ResetMedianPixelList(pixel_list[id]); |
| 2982 | for (v=0; v < (long) width; v++) |
| 2983 | { |
| 2984 | for (u=0; u < (long) width; u++) |
| 2985 | InsertMedianPixelList(image,r+u,s+u,pixel_list[id]); |
| 2986 | r+=image->columns+width; |
| 2987 | s+=image->columns+width; |
| 2988 | } |
| 2989 | pixel=GetMedianPixelList(pixel_list[id]); |
| 2990 | SetPixelPacket(median_image,&pixel,q,median_indexes+x); |
| 2991 | p++; |
| 2992 | q++; |
| 2993 | } |
| 2994 | if (SyncCacheViewAuthenticPixels(median_view,exception) == MagickFalse) |
| 2995 | status=MagickFalse; |
| 2996 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 2997 | { |
| 2998 | MagickBooleanType |
| 2999 | proceed; |
| 3000 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 3001 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3002 | #pragma omp critical (MagickCore_MedianFilterImage) |
| 3003 | #endif |
| 3004 | proceed=SetImageProgress(image,MedianFilterImageTag,progress++, |
| 3005 | image->rows); |
| 3006 | if (proceed == MagickFalse) |
| 3007 | status=MagickFalse; |
| 3008 | } |
| 3009 | } |
| 3010 | median_view=DestroyCacheView(median_view); |
| 3011 | image_view=DestroyCacheView(image_view); |
| 3012 | pixel_list=DestroyMedianPixelListThreadSet(pixel_list); |
| 3013 | return(median_image); |
| 3014 | } |
| 3015 | |
| 3016 | /* |
| 3017 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3018 | % % |
| 3019 | % % |
| 3020 | % % |
| 3021 | % M o t i o n B l u r I m a g e % |
| 3022 | % % |
| 3023 | % % |
| 3024 | % % |
| 3025 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3026 | % |
| 3027 | % MotionBlurImage() simulates motion blur. We convolve the image with a |
| 3028 | % Gaussian operator of the given radius and standard deviation (sigma). |
| 3029 | % For reasonable results, radius should be larger than sigma. Use a |
| 3030 | % radius of 0 and MotionBlurImage() selects a suitable radius for you. |
| 3031 | % Angle gives the angle of the blurring motion. |
| 3032 | % |
| 3033 | % Andrew Protano contributed this effect. |
| 3034 | % |
| 3035 | % The format of the MotionBlurImage method is: |
| 3036 | % |
| 3037 | % Image *MotionBlurImage(const Image *image,const double radius, |
| 3038 | % const double sigma,const double angle,ExceptionInfo *exception) |
| 3039 | % Image *MotionBlurImageChannel(const Image *image,const ChannelType channel, |
| 3040 | % const double radius,const double sigma,const double angle, |
| 3041 | % ExceptionInfo *exception) |
| 3042 | % |
| 3043 | % A description of each parameter follows: |
| 3044 | % |
| 3045 | % o image: the image. |
| 3046 | % |
| 3047 | % o channel: the channel type. |
| 3048 | % |
| 3049 | % o radius: the radius of the Gaussian, in pixels, not counting the center |
| 3050 | % o radius: the radius of the Gaussian, in pixels, not counting |
| 3051 | % the center pixel. |
| 3052 | % |
| 3053 | % o sigma: the standard deviation of the Gaussian, in pixels. |
| 3054 | % |
| 3055 | % o angle: Apply the effect along this angle. |
| 3056 | % |
| 3057 | % o exception: return any errors or warnings in this structure. |
| 3058 | % |
| 3059 | */ |
| 3060 | |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 3061 | static double *GetMotionBlurKernel(const unsigned long width,const double sigma) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3062 | { |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3063 | double |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 3064 | *kernel, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3065 | normalize; |
| 3066 | |
| 3067 | register long |
| 3068 | i; |
| 3069 | |
| 3070 | /* |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 3071 | Generate a 1-D convolution kernel. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3072 | */ |
| 3073 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
| 3074 | kernel=(double *) AcquireQuantumMemory((size_t) width,sizeof(*kernel)); |
| 3075 | if (kernel == (double *) NULL) |
| 3076 | return(kernel); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3077 | normalize=0.0; |
| 3078 | for (i=0; i < (long) width; i++) |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 3079 | { |
| 3080 | kernel[i]=exp((-((double) i*i)/(double) (2.0*MagickSigma*MagickSigma)))/ |
| 3081 | (MagickSQ2PI*MagickSigma); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3082 | normalize+=kernel[i]; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 3083 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3084 | for (i=0; i < (long) width; i++) |
| 3085 | kernel[i]/=normalize; |
| 3086 | return(kernel); |
| 3087 | } |
| 3088 | |
| 3089 | MagickExport Image *MotionBlurImage(const Image *image,const double radius, |
| 3090 | const double sigma,const double angle,ExceptionInfo *exception) |
| 3091 | { |
| 3092 | Image |
| 3093 | *motion_blur; |
| 3094 | |
| 3095 | motion_blur=MotionBlurImageChannel(image,DefaultChannels,radius,sigma,angle, |
| 3096 | exception); |
| 3097 | return(motion_blur); |
| 3098 | } |
| 3099 | |
| 3100 | MagickExport Image *MotionBlurImageChannel(const Image *image, |
| 3101 | const ChannelType channel,const double radius,const double sigma, |
| 3102 | const double angle,ExceptionInfo *exception) |
| 3103 | { |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 3104 | CacheView |
| 3105 | *blur_view, |
| 3106 | *image_view; |
| 3107 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3108 | double |
| 3109 | *kernel; |
| 3110 | |
| 3111 | Image |
| 3112 | *blur_image; |
| 3113 | |
| 3114 | long |
| 3115 | progress, |
| 3116 | y; |
| 3117 | |
| 3118 | MagickBooleanType |
| 3119 | status; |
| 3120 | |
| 3121 | MagickPixelPacket |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 3122 | bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3123 | |
| 3124 | OffsetInfo |
| 3125 | *offset; |
| 3126 | |
| 3127 | PointInfo |
| 3128 | point; |
| 3129 | |
| 3130 | register long |
| 3131 | i; |
| 3132 | |
| 3133 | unsigned long |
| 3134 | width; |
| 3135 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3136 | assert(image != (Image *) NULL); |
| 3137 | assert(image->signature == MagickSignature); |
| 3138 | if (image->debug != MagickFalse) |
| 3139 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3140 | assert(exception != (ExceptionInfo *) NULL); |
| 3141 | width=GetOptimalKernelWidth1D(radius,sigma); |
| 3142 | kernel=GetMotionBlurKernel(width,sigma); |
| 3143 | if (kernel == (double *) NULL) |
| 3144 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 3145 | offset=(OffsetInfo *) AcquireQuantumMemory(width,sizeof(*offset)); |
| 3146 | if (offset == (OffsetInfo *) NULL) |
| 3147 | { |
| 3148 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 3149 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 3150 | } |
| 3151 | blur_image=CloneImage(image,0,0,MagickTrue,exception); |
| 3152 | if (blur_image == (Image *) NULL) |
| 3153 | { |
| 3154 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 3155 | offset=(OffsetInfo *) RelinquishMagickMemory(offset); |
| 3156 | return((Image *) NULL); |
| 3157 | } |
| 3158 | if (SetImageStorageClass(blur_image,DirectClass) == MagickFalse) |
| 3159 | { |
| 3160 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 3161 | offset=(OffsetInfo *) RelinquishMagickMemory(offset); |
| 3162 | InheritException(exception,&blur_image->exception); |
| 3163 | blur_image=DestroyImage(blur_image); |
| 3164 | return((Image *) NULL); |
| 3165 | } |
| 3166 | point.x=(double) width*sin(DegreesToRadians(angle)); |
| 3167 | point.y=(double) width*cos(DegreesToRadians(angle)); |
| 3168 | for (i=0; i < (long) width; i++) |
| 3169 | { |
| 3170 | offset[i].x=(long) ((i*point.y)/hypot(point.x,point.y)+0.5); |
| 3171 | offset[i].y=(long) ((i*point.x)/hypot(point.x,point.y)+0.5); |
| 3172 | } |
| 3173 | /* |
| 3174 | Motion blur image. |
| 3175 | */ |
| 3176 | status=MagickTrue; |
| 3177 | progress=0; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 3178 | GetMagickPixelPacket(image,&bias); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3179 | image_view=AcquireCacheView(image); |
| 3180 | blur_view=AcquireCacheView(blur_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 3181 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 00f9537 | 2010-02-13 16:39:29 +0000 | [diff] [blame] | 3182 | #pragma omp parallel for schedule(static) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3183 | #endif |
| 3184 | for (y=0; y < (long) image->rows; y++) |
| 3185 | { |
| 3186 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3187 | *restrict blur_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3188 | |
| 3189 | register long |
| 3190 | x; |
| 3191 | |
| 3192 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3193 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3194 | |
| 3195 | if (status == MagickFalse) |
| 3196 | continue; |
| 3197 | q=GetCacheViewAuthenticPixels(blur_view,0,y,blur_image->columns,1, |
| 3198 | exception); |
| 3199 | if (q == (PixelPacket *) NULL) |
| 3200 | { |
| 3201 | status=MagickFalse; |
| 3202 | continue; |
| 3203 | } |
| 3204 | blur_indexes=GetCacheViewAuthenticIndexQueue(blur_view); |
| 3205 | for (x=0; x < (long) image->columns; x++) |
| 3206 | { |
| 3207 | MagickPixelPacket |
| 3208 | qixel; |
| 3209 | |
| 3210 | PixelPacket |
| 3211 | pixel; |
| 3212 | |
| 3213 | register double |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3214 | *restrict k; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3215 | |
| 3216 | register long |
| 3217 | i; |
| 3218 | |
| 3219 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3220 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3221 | |
| 3222 | k=kernel; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 3223 | qixel=bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3224 | if (((channel & OpacityChannel) == 0) || (image->matte == MagickFalse)) |
| 3225 | { |
| 3226 | for (i=0; i < (long) width; i++) |
| 3227 | { |
| 3228 | (void) GetOneCacheViewVirtualPixel(image_view,x+offset[i].x,y+ |
| 3229 | offset[i].y,&pixel,exception); |
| 3230 | qixel.red+=(*k)*pixel.red; |
| 3231 | qixel.green+=(*k)*pixel.green; |
| 3232 | qixel.blue+=(*k)*pixel.blue; |
| 3233 | qixel.opacity+=(*k)*pixel.opacity; |
| 3234 | if (image->colorspace == CMYKColorspace) |
| 3235 | { |
| 3236 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 3237 | qixel.index+=(*k)*(*indexes); |
| 3238 | } |
| 3239 | k++; |
| 3240 | } |
| 3241 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3242 | q->red=ClampToQuantum(qixel.red); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3243 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3244 | q->green=ClampToQuantum(qixel.green); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3245 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3246 | q->blue=ClampToQuantum(qixel.blue); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3247 | if ((channel & OpacityChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3248 | q->opacity=ClampToQuantum(qixel.opacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3249 | if (((channel & IndexChannel) != 0) && |
| 3250 | (image->colorspace == CMYKColorspace)) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3251 | blur_indexes[x]=(IndexPacket) ClampToQuantum(qixel.index); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3252 | } |
| 3253 | else |
| 3254 | { |
| 3255 | MagickRealType |
| 3256 | alpha, |
| 3257 | gamma; |
| 3258 | |
| 3259 | alpha=0.0; |
| 3260 | gamma=0.0; |
| 3261 | for (i=0; i < (long) width; i++) |
| 3262 | { |
| 3263 | (void) GetOneCacheViewVirtualPixel(image_view,x+offset[i].x,y+ |
| 3264 | offset[i].y,&pixel,exception); |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 3265 | alpha=(MagickRealType) (QuantumScale*GetAlphaPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3266 | qixel.red+=(*k)*alpha*pixel.red; |
| 3267 | qixel.green+=(*k)*alpha*pixel.green; |
| 3268 | qixel.blue+=(*k)*alpha*pixel.blue; |
| 3269 | qixel.opacity+=(*k)*pixel.opacity; |
| 3270 | if (image->colorspace == CMYKColorspace) |
| 3271 | { |
| 3272 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 3273 | qixel.index+=(*k)*alpha*(*indexes); |
| 3274 | } |
| 3275 | gamma+=(*k)*alpha; |
| 3276 | k++; |
| 3277 | } |
| 3278 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 3279 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3280 | q->red=ClampToQuantum(gamma*qixel.red); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3281 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3282 | q->green=ClampToQuantum(gamma*qixel.green); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3283 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3284 | q->blue=ClampToQuantum(gamma*qixel.blue); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3285 | if ((channel & OpacityChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3286 | q->opacity=ClampToQuantum(qixel.opacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3287 | if (((channel & IndexChannel) != 0) && |
| 3288 | (image->colorspace == CMYKColorspace)) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 3289 | blur_indexes[x]=(IndexPacket) ClampToQuantum(gamma*qixel.index); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3290 | } |
| 3291 | q++; |
| 3292 | } |
| 3293 | if (SyncCacheViewAuthenticPixels(blur_view,exception) == MagickFalse) |
| 3294 | status=MagickFalse; |
| 3295 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 3296 | { |
| 3297 | MagickBooleanType |
| 3298 | proceed; |
| 3299 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 3300 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3301 | #pragma omp critical (MagickCore_MotionBlurImageChannel) |
| 3302 | #endif |
| 3303 | proceed=SetImageProgress(image,BlurImageTag,progress++,image->rows); |
| 3304 | if (proceed == MagickFalse) |
| 3305 | status=MagickFalse; |
| 3306 | } |
| 3307 | } |
| 3308 | blur_view=DestroyCacheView(blur_view); |
| 3309 | image_view=DestroyCacheView(image_view); |
| 3310 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 3311 | offset=(OffsetInfo *) RelinquishMagickMemory(offset); |
| 3312 | if (status == MagickFalse) |
| 3313 | blur_image=DestroyImage(blur_image); |
| 3314 | return(blur_image); |
| 3315 | } |
| 3316 | |
| 3317 | /* |
| 3318 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3319 | % % |
| 3320 | % % |
| 3321 | % % |
| 3322 | % P r e v i e w I m a g e % |
| 3323 | % % |
| 3324 | % % |
| 3325 | % % |
| 3326 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3327 | % |
| 3328 | % PreviewImage() tiles 9 thumbnails of the specified image with an image |
| 3329 | % processing operation applied with varying parameters. This may be helpful |
| 3330 | % pin-pointing an appropriate parameter for a particular image processing |
| 3331 | % operation. |
| 3332 | % |
| 3333 | % The format of the PreviewImages method is: |
| 3334 | % |
| 3335 | % Image *PreviewImages(const Image *image,const PreviewType preview, |
| 3336 | % ExceptionInfo *exception) |
| 3337 | % |
| 3338 | % A description of each parameter follows: |
| 3339 | % |
| 3340 | % o image: the image. |
| 3341 | % |
| 3342 | % o preview: the image processing operation. |
| 3343 | % |
| 3344 | % o exception: return any errors or warnings in this structure. |
| 3345 | % |
| 3346 | */ |
| 3347 | MagickExport Image *PreviewImage(const Image *image,const PreviewType preview, |
| 3348 | ExceptionInfo *exception) |
| 3349 | { |
| 3350 | #define NumberTiles 9 |
| 3351 | #define PreviewImageTag "Preview/Image" |
| 3352 | #define DefaultPreviewGeometry "204x204+10+10" |
| 3353 | |
| 3354 | char |
| 3355 | factor[MaxTextExtent], |
| 3356 | label[MaxTextExtent]; |
| 3357 | |
| 3358 | double |
| 3359 | degrees, |
| 3360 | gamma, |
| 3361 | percentage, |
| 3362 | radius, |
| 3363 | sigma, |
| 3364 | threshold; |
| 3365 | |
| 3366 | Image |
| 3367 | *images, |
| 3368 | *montage_image, |
| 3369 | *preview_image, |
| 3370 | *thumbnail; |
| 3371 | |
| 3372 | ImageInfo |
| 3373 | *preview_info; |
| 3374 | |
| 3375 | long |
| 3376 | y; |
| 3377 | |
| 3378 | MagickBooleanType |
| 3379 | proceed; |
| 3380 | |
| 3381 | MontageInfo |
| 3382 | *montage_info; |
| 3383 | |
| 3384 | QuantizeInfo |
| 3385 | quantize_info; |
| 3386 | |
| 3387 | RectangleInfo |
| 3388 | geometry; |
| 3389 | |
| 3390 | register long |
| 3391 | i, |
| 3392 | x; |
| 3393 | |
| 3394 | unsigned long |
| 3395 | colors; |
| 3396 | |
| 3397 | /* |
| 3398 | Open output image file. |
| 3399 | */ |
| 3400 | assert(image != (Image *) NULL); |
| 3401 | assert(image->signature == MagickSignature); |
| 3402 | if (image->debug != MagickFalse) |
| 3403 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3404 | colors=2; |
| 3405 | degrees=0.0; |
| 3406 | gamma=(-0.2f); |
| 3407 | preview_info=AcquireImageInfo(); |
| 3408 | SetGeometry(image,&geometry); |
| 3409 | (void) ParseMetaGeometry(DefaultPreviewGeometry,&geometry.x,&geometry.y, |
| 3410 | &geometry.width,&geometry.height); |
| 3411 | images=NewImageList(); |
| 3412 | percentage=12.5; |
| 3413 | GetQuantizeInfo(&quantize_info); |
| 3414 | radius=0.0; |
| 3415 | sigma=1.0; |
| 3416 | threshold=0.0; |
| 3417 | x=0; |
| 3418 | y=0; |
| 3419 | for (i=0; i < NumberTiles; i++) |
| 3420 | { |
| 3421 | thumbnail=ThumbnailImage(image,geometry.width,geometry.height,exception); |
| 3422 | if (thumbnail == (Image *) NULL) |
| 3423 | break; |
| 3424 | (void) SetImageProgressMonitor(thumbnail,(MagickProgressMonitor) NULL, |
| 3425 | (void *) NULL); |
| 3426 | (void) SetImageProperty(thumbnail,"label",DefaultTileLabel); |
| 3427 | if (i == (NumberTiles/2)) |
| 3428 | { |
| 3429 | (void) QueryColorDatabase("#dfdfdf",&thumbnail->matte_color,exception); |
| 3430 | AppendImageToList(&images,thumbnail); |
| 3431 | continue; |
| 3432 | } |
| 3433 | switch (preview) |
| 3434 | { |
| 3435 | case RotatePreview: |
| 3436 | { |
| 3437 | degrees+=45.0; |
| 3438 | preview_image=RotateImage(thumbnail,degrees,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3439 | (void) FormatMagickString(label,MaxTextExtent,"rotate %g",degrees); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3440 | break; |
| 3441 | } |
| 3442 | case ShearPreview: |
| 3443 | { |
| 3444 | degrees+=5.0; |
| 3445 | preview_image=ShearImage(thumbnail,degrees,degrees,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3446 | (void) FormatMagickString(label,MaxTextExtent,"shear %gx%g", |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3447 | degrees,2.0*degrees); |
| 3448 | break; |
| 3449 | } |
| 3450 | case RollPreview: |
| 3451 | { |
| 3452 | x=(long) ((i+1)*thumbnail->columns)/NumberTiles; |
| 3453 | y=(long) ((i+1)*thumbnail->rows)/NumberTiles; |
| 3454 | preview_image=RollImage(thumbnail,x,y,exception); |
| 3455 | (void) FormatMagickString(label,MaxTextExtent,"roll %ldx%ld",x,y); |
| 3456 | break; |
| 3457 | } |
| 3458 | case HuePreview: |
| 3459 | { |
| 3460 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3461 | if (preview_image == (Image *) NULL) |
| 3462 | break; |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3463 | (void) FormatMagickString(factor,MaxTextExtent,"100,100,%g", |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3464 | 2.0*percentage); |
| 3465 | (void) ModulateImage(preview_image,factor); |
| 3466 | (void) FormatMagickString(label,MaxTextExtent,"modulate %s",factor); |
| 3467 | break; |
| 3468 | } |
| 3469 | case SaturationPreview: |
| 3470 | { |
| 3471 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3472 | if (preview_image == (Image *) NULL) |
| 3473 | break; |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3474 | (void) FormatMagickString(factor,MaxTextExtent,"100,%g", |
cristy | 8cd5b31 | 2010-01-07 01:10:24 +0000 | [diff] [blame] | 3475 | 2.0*percentage); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3476 | (void) ModulateImage(preview_image,factor); |
| 3477 | (void) FormatMagickString(label,MaxTextExtent,"modulate %s",factor); |
| 3478 | break; |
| 3479 | } |
| 3480 | case BrightnessPreview: |
| 3481 | { |
| 3482 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3483 | if (preview_image == (Image *) NULL) |
| 3484 | break; |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3485 | (void) FormatMagickString(factor,MaxTextExtent,"%g",2.0*percentage); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3486 | (void) ModulateImage(preview_image,factor); |
| 3487 | (void) FormatMagickString(label,MaxTextExtent,"modulate %s",factor); |
| 3488 | break; |
| 3489 | } |
| 3490 | case GammaPreview: |
| 3491 | default: |
| 3492 | { |
| 3493 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3494 | if (preview_image == (Image *) NULL) |
| 3495 | break; |
| 3496 | gamma+=0.4f; |
| 3497 | (void) GammaImageChannel(preview_image,DefaultChannels,gamma); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3498 | (void) FormatMagickString(label,MaxTextExtent,"gamma %g",gamma); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3499 | break; |
| 3500 | } |
| 3501 | case SpiffPreview: |
| 3502 | { |
| 3503 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3504 | if (preview_image != (Image *) NULL) |
| 3505 | for (x=0; x < i; x++) |
| 3506 | (void) ContrastImage(preview_image,MagickTrue); |
| 3507 | (void) FormatMagickString(label,MaxTextExtent,"contrast (%ld)",i+1); |
| 3508 | break; |
| 3509 | } |
| 3510 | case DullPreview: |
| 3511 | { |
| 3512 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3513 | if (preview_image == (Image *) NULL) |
| 3514 | break; |
| 3515 | for (x=0; x < i; x++) |
| 3516 | (void) ContrastImage(preview_image,MagickFalse); |
| 3517 | (void) FormatMagickString(label,MaxTextExtent,"+contrast (%ld)",i+1); |
| 3518 | break; |
| 3519 | } |
| 3520 | case GrayscalePreview: |
| 3521 | { |
| 3522 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3523 | if (preview_image == (Image *) NULL) |
| 3524 | break; |
| 3525 | colors<<=1; |
| 3526 | quantize_info.number_colors=colors; |
| 3527 | quantize_info.colorspace=GRAYColorspace; |
| 3528 | (void) QuantizeImage(&quantize_info,preview_image); |
| 3529 | (void) FormatMagickString(label,MaxTextExtent, |
| 3530 | "-colorspace gray -colors %ld",colors); |
| 3531 | break; |
| 3532 | } |
| 3533 | case QuantizePreview: |
| 3534 | { |
| 3535 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3536 | if (preview_image == (Image *) NULL) |
| 3537 | break; |
| 3538 | colors<<=1; |
| 3539 | quantize_info.number_colors=colors; |
| 3540 | (void) QuantizeImage(&quantize_info,preview_image); |
| 3541 | (void) FormatMagickString(label,MaxTextExtent,"colors %ld",colors); |
| 3542 | break; |
| 3543 | } |
| 3544 | case DespecklePreview: |
| 3545 | { |
| 3546 | for (x=0; x < (i-1); x++) |
| 3547 | { |
| 3548 | preview_image=DespeckleImage(thumbnail,exception); |
| 3549 | if (preview_image == (Image *) NULL) |
| 3550 | break; |
| 3551 | thumbnail=DestroyImage(thumbnail); |
| 3552 | thumbnail=preview_image; |
| 3553 | } |
| 3554 | preview_image=DespeckleImage(thumbnail,exception); |
| 3555 | if (preview_image == (Image *) NULL) |
| 3556 | break; |
| 3557 | (void) FormatMagickString(label,MaxTextExtent,"despeckle (%ld)",i+1); |
| 3558 | break; |
| 3559 | } |
| 3560 | case ReduceNoisePreview: |
| 3561 | { |
| 3562 | preview_image=ReduceNoiseImage(thumbnail,radius,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3563 | (void) FormatMagickString(label,MaxTextExtent,"noise %g",radius); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3564 | break; |
| 3565 | } |
| 3566 | case AddNoisePreview: |
| 3567 | { |
| 3568 | switch ((int) i) |
| 3569 | { |
| 3570 | case 0: |
| 3571 | { |
| 3572 | (void) CopyMagickString(factor,"uniform",MaxTextExtent); |
| 3573 | break; |
| 3574 | } |
| 3575 | case 1: |
| 3576 | { |
| 3577 | (void) CopyMagickString(factor,"gaussian",MaxTextExtent); |
| 3578 | break; |
| 3579 | } |
| 3580 | case 2: |
| 3581 | { |
| 3582 | (void) CopyMagickString(factor,"multiplicative",MaxTextExtent); |
| 3583 | break; |
| 3584 | } |
| 3585 | case 3: |
| 3586 | { |
| 3587 | (void) CopyMagickString(factor,"impulse",MaxTextExtent); |
| 3588 | break; |
| 3589 | } |
| 3590 | case 4: |
| 3591 | { |
| 3592 | (void) CopyMagickString(factor,"laplacian",MaxTextExtent); |
| 3593 | break; |
| 3594 | } |
| 3595 | case 5: |
| 3596 | { |
| 3597 | (void) CopyMagickString(factor,"Poisson",MaxTextExtent); |
| 3598 | break; |
| 3599 | } |
| 3600 | default: |
| 3601 | { |
| 3602 | (void) CopyMagickString(thumbnail->magick,"NULL",MaxTextExtent); |
| 3603 | break; |
| 3604 | } |
| 3605 | } |
| 3606 | preview_image=ReduceNoiseImage(thumbnail,(double) i,exception); |
| 3607 | (void) FormatMagickString(label,MaxTextExtent,"+noise %s",factor); |
| 3608 | break; |
| 3609 | } |
| 3610 | case SharpenPreview: |
| 3611 | { |
| 3612 | preview_image=SharpenImage(thumbnail,radius,sigma,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3613 | (void) FormatMagickString(label,MaxTextExtent,"sharpen %gx%g", |
cristy | 8cd5b31 | 2010-01-07 01:10:24 +0000 | [diff] [blame] | 3614 | radius,sigma); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3615 | break; |
| 3616 | } |
| 3617 | case BlurPreview: |
| 3618 | { |
| 3619 | preview_image=BlurImage(thumbnail,radius,sigma,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3620 | (void) FormatMagickString(label,MaxTextExtent,"blur %gx%g",radius, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3621 | sigma); |
| 3622 | break; |
| 3623 | } |
| 3624 | case ThresholdPreview: |
| 3625 | { |
| 3626 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3627 | if (preview_image == (Image *) NULL) |
| 3628 | break; |
| 3629 | (void) BilevelImage(thumbnail, |
| 3630 | (double) (percentage*((MagickRealType) QuantumRange+1.0))/100.0); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3631 | (void) FormatMagickString(label,MaxTextExtent,"threshold %g", |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3632 | (double) (percentage*((MagickRealType) QuantumRange+1.0))/100.0); |
| 3633 | break; |
| 3634 | } |
| 3635 | case EdgeDetectPreview: |
| 3636 | { |
| 3637 | preview_image=EdgeImage(thumbnail,radius,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3638 | (void) FormatMagickString(label,MaxTextExtent,"edge %g",radius); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3639 | break; |
| 3640 | } |
| 3641 | case SpreadPreview: |
| 3642 | { |
| 3643 | preview_image=SpreadImage(thumbnail,radius,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3644 | (void) FormatMagickString(label,MaxTextExtent,"spread %g", |
cristy | 8cd5b31 | 2010-01-07 01:10:24 +0000 | [diff] [blame] | 3645 | radius+0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3646 | break; |
| 3647 | } |
| 3648 | case SolarizePreview: |
| 3649 | { |
| 3650 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3651 | if (preview_image == (Image *) NULL) |
| 3652 | break; |
| 3653 | (void) SolarizeImage(preview_image,(double) QuantumRange* |
| 3654 | percentage/100.0); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3655 | (void) FormatMagickString(label,MaxTextExtent,"solarize %g", |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3656 | (QuantumRange*percentage)/100.0); |
| 3657 | break; |
| 3658 | } |
| 3659 | case ShadePreview: |
| 3660 | { |
| 3661 | degrees+=10.0; |
| 3662 | preview_image=ShadeImage(thumbnail,MagickTrue,degrees,degrees, |
| 3663 | exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3664 | (void) FormatMagickString(label,MaxTextExtent,"shade %gx%g", |
cristy | 8cd5b31 | 2010-01-07 01:10:24 +0000 | [diff] [blame] | 3665 | degrees,degrees); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3666 | break; |
| 3667 | } |
| 3668 | case RaisePreview: |
| 3669 | { |
| 3670 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3671 | if (preview_image == (Image *) NULL) |
| 3672 | break; |
| 3673 | geometry.width=(unsigned long) (2*i+2); |
| 3674 | geometry.height=(unsigned long) (2*i+2); |
| 3675 | geometry.x=i/2; |
| 3676 | geometry.y=i/2; |
| 3677 | (void) RaiseImage(preview_image,&geometry,MagickTrue); |
| 3678 | (void) FormatMagickString(label,MaxTextExtent,"raise %lux%lu%+ld%+ld", |
| 3679 | geometry.width,geometry.height,geometry.x,geometry.y); |
| 3680 | break; |
| 3681 | } |
| 3682 | case SegmentPreview: |
| 3683 | { |
| 3684 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3685 | if (preview_image == (Image *) NULL) |
| 3686 | break; |
| 3687 | threshold+=0.4f; |
| 3688 | (void) SegmentImage(preview_image,RGBColorspace,MagickFalse,threshold, |
| 3689 | threshold); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3690 | (void) FormatMagickString(label,MaxTextExtent,"segment %gx%g", |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3691 | threshold,threshold); |
| 3692 | break; |
| 3693 | } |
| 3694 | case SwirlPreview: |
| 3695 | { |
| 3696 | preview_image=SwirlImage(thumbnail,degrees,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3697 | (void) FormatMagickString(label,MaxTextExtent,"swirl %g",degrees); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3698 | degrees+=45.0; |
| 3699 | break; |
| 3700 | } |
| 3701 | case ImplodePreview: |
| 3702 | { |
| 3703 | degrees+=0.1f; |
| 3704 | preview_image=ImplodeImage(thumbnail,degrees,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3705 | (void) FormatMagickString(label,MaxTextExtent,"implode %g",degrees); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3706 | break; |
| 3707 | } |
| 3708 | case WavePreview: |
| 3709 | { |
| 3710 | degrees+=5.0f; |
| 3711 | preview_image=WaveImage(thumbnail,0.5*degrees,2.0*degrees,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3712 | (void) FormatMagickString(label,MaxTextExtent,"wave %gx%g", |
cristy | 8cd5b31 | 2010-01-07 01:10:24 +0000 | [diff] [blame] | 3713 | 0.5*degrees,2.0*degrees); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3714 | break; |
| 3715 | } |
| 3716 | case OilPaintPreview: |
| 3717 | { |
| 3718 | preview_image=OilPaintImage(thumbnail,(double) radius,exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3719 | (void) FormatMagickString(label,MaxTextExtent,"paint %g",radius); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3720 | break; |
| 3721 | } |
| 3722 | case CharcoalDrawingPreview: |
| 3723 | { |
| 3724 | preview_image=CharcoalImage(thumbnail,(double) radius,(double) sigma, |
| 3725 | exception); |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3726 | (void) FormatMagickString(label,MaxTextExtent,"charcoal %gx%g", |
cristy | 8cd5b31 | 2010-01-07 01:10:24 +0000 | [diff] [blame] | 3727 | radius,sigma); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3728 | break; |
| 3729 | } |
| 3730 | case JPEGPreview: |
| 3731 | { |
| 3732 | char |
| 3733 | filename[MaxTextExtent]; |
| 3734 | |
| 3735 | int |
| 3736 | file; |
| 3737 | |
| 3738 | MagickBooleanType |
| 3739 | status; |
| 3740 | |
| 3741 | preview_image=CloneImage(thumbnail,0,0,MagickTrue,exception); |
| 3742 | if (preview_image == (Image *) NULL) |
| 3743 | break; |
| 3744 | preview_info->quality=(unsigned long) percentage; |
| 3745 | (void) FormatMagickString(factor,MaxTextExtent,"%lu", |
| 3746 | preview_info->quality); |
| 3747 | file=AcquireUniqueFileResource(filename); |
| 3748 | if (file != -1) |
| 3749 | file=close(file)-1; |
| 3750 | (void) FormatMagickString(preview_image->filename,MaxTextExtent, |
| 3751 | "jpeg:%s",filename); |
| 3752 | status=WriteImage(preview_info,preview_image); |
| 3753 | if (status != MagickFalse) |
| 3754 | { |
| 3755 | Image |
| 3756 | *quality_image; |
| 3757 | |
| 3758 | (void) CopyMagickString(preview_info->filename, |
| 3759 | preview_image->filename,MaxTextExtent); |
| 3760 | quality_image=ReadImage(preview_info,exception); |
| 3761 | if (quality_image != (Image *) NULL) |
| 3762 | { |
| 3763 | preview_image=DestroyImage(preview_image); |
| 3764 | preview_image=quality_image; |
| 3765 | } |
| 3766 | } |
| 3767 | (void) RelinquishUniqueFileResource(preview_image->filename); |
| 3768 | if ((GetBlobSize(preview_image)/1024) >= 1024) |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3769 | (void) FormatMagickString(label,MaxTextExtent,"quality %s\n%gmb ", |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3770 | factor,(double) ((MagickOffsetType) GetBlobSize(preview_image))/ |
| 3771 | 1024.0/1024.0); |
| 3772 | else |
| 3773 | if (GetBlobSize(preview_image) >= 1024) |
cristy | 8cd5b31 | 2010-01-07 01:10:24 +0000 | [diff] [blame] | 3774 | (void) FormatMagickString(label,MaxTextExtent, |
cristy | e7f5109 | 2010-01-17 00:39:37 +0000 | [diff] [blame] | 3775 | "quality %s\n%gkb ",factor,(double) ((MagickOffsetType) |
cristy | 8cd5b31 | 2010-01-07 01:10:24 +0000 | [diff] [blame] | 3776 | GetBlobSize(preview_image))/1024.0); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3777 | else |
| 3778 | (void) FormatMagickString(label,MaxTextExtent,"quality %s\n%lub ", |
| 3779 | factor,(unsigned long) GetBlobSize(thumbnail)); |
| 3780 | break; |
| 3781 | } |
| 3782 | } |
| 3783 | thumbnail=DestroyImage(thumbnail); |
| 3784 | percentage+=12.5; |
| 3785 | radius+=0.5; |
| 3786 | sigma+=0.25; |
| 3787 | if (preview_image == (Image *) NULL) |
| 3788 | break; |
| 3789 | (void) DeleteImageProperty(preview_image,"label"); |
| 3790 | (void) SetImageProperty(preview_image,"label",label); |
| 3791 | AppendImageToList(&images,preview_image); |
| 3792 | proceed=SetImageProgress(image,PreviewImageTag,i,NumberTiles); |
| 3793 | if (proceed == MagickFalse) |
| 3794 | break; |
| 3795 | } |
| 3796 | if (images == (Image *) NULL) |
| 3797 | { |
| 3798 | preview_info=DestroyImageInfo(preview_info); |
| 3799 | return((Image *) NULL); |
| 3800 | } |
| 3801 | /* |
| 3802 | Create the montage. |
| 3803 | */ |
| 3804 | montage_info=CloneMontageInfo(preview_info,(MontageInfo *) NULL); |
| 3805 | (void) CopyMagickString(montage_info->filename,image->filename,MaxTextExtent); |
| 3806 | montage_info->shadow=MagickTrue; |
| 3807 | (void) CloneString(&montage_info->tile,"3x3"); |
| 3808 | (void) CloneString(&montage_info->geometry,DefaultPreviewGeometry); |
| 3809 | (void) CloneString(&montage_info->frame,DefaultTileFrame); |
| 3810 | montage_image=MontageImages(images,montage_info,exception); |
| 3811 | montage_info=DestroyMontageInfo(montage_info); |
| 3812 | images=DestroyImageList(images); |
| 3813 | if (montage_image == (Image *) NULL) |
| 3814 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 3815 | if (montage_image->montage != (char *) NULL) |
| 3816 | { |
| 3817 | /* |
| 3818 | Free image directory. |
| 3819 | */ |
| 3820 | montage_image->montage=(char *) RelinquishMagickMemory( |
| 3821 | montage_image->montage); |
| 3822 | if (image->directory != (char *) NULL) |
| 3823 | montage_image->directory=(char *) RelinquishMagickMemory( |
| 3824 | montage_image->directory); |
| 3825 | } |
| 3826 | preview_info=DestroyImageInfo(preview_info); |
| 3827 | return(montage_image); |
| 3828 | } |
| 3829 | |
| 3830 | /* |
| 3831 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3832 | % % |
| 3833 | % % |
| 3834 | % % |
| 3835 | % R a d i a l B l u r I m a g e % |
| 3836 | % % |
| 3837 | % % |
| 3838 | % % |
| 3839 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3840 | % |
| 3841 | % RadialBlurImage() applies a radial blur to the image. |
| 3842 | % |
| 3843 | % Andrew Protano contributed this effect. |
| 3844 | % |
| 3845 | % The format of the RadialBlurImage method is: |
| 3846 | % |
| 3847 | % Image *RadialBlurImage(const Image *image,const double angle, |
| 3848 | % ExceptionInfo *exception) |
| 3849 | % Image *RadialBlurImageChannel(const Image *image,const ChannelType channel, |
| 3850 | % const double angle,ExceptionInfo *exception) |
| 3851 | % |
| 3852 | % A description of each parameter follows: |
| 3853 | % |
| 3854 | % o image: the image. |
| 3855 | % |
| 3856 | % o channel: the channel type. |
| 3857 | % |
| 3858 | % o angle: the angle of the radial blur. |
| 3859 | % |
| 3860 | % o exception: return any errors or warnings in this structure. |
| 3861 | % |
| 3862 | */ |
| 3863 | |
| 3864 | MagickExport Image *RadialBlurImage(const Image *image,const double angle, |
| 3865 | ExceptionInfo *exception) |
| 3866 | { |
| 3867 | Image |
| 3868 | *blur_image; |
| 3869 | |
| 3870 | blur_image=RadialBlurImageChannel(image,DefaultChannels,angle,exception); |
| 3871 | return(blur_image); |
| 3872 | } |
| 3873 | |
| 3874 | MagickExport Image *RadialBlurImageChannel(const Image *image, |
| 3875 | const ChannelType channel,const double angle,ExceptionInfo *exception) |
| 3876 | { |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 3877 | CacheView |
| 3878 | *blur_view, |
| 3879 | *image_view; |
| 3880 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3881 | Image |
| 3882 | *blur_image; |
| 3883 | |
| 3884 | long |
| 3885 | progress, |
| 3886 | y; |
| 3887 | |
| 3888 | MagickBooleanType |
| 3889 | status; |
| 3890 | |
| 3891 | MagickPixelPacket |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 3892 | bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3893 | |
| 3894 | MagickRealType |
| 3895 | blur_radius, |
| 3896 | *cos_theta, |
| 3897 | offset, |
| 3898 | *sin_theta, |
| 3899 | theta; |
| 3900 | |
| 3901 | PointInfo |
| 3902 | blur_center; |
| 3903 | |
| 3904 | register long |
| 3905 | i; |
| 3906 | |
| 3907 | unsigned long |
| 3908 | n; |
| 3909 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3910 | /* |
| 3911 | Allocate blur image. |
| 3912 | */ |
| 3913 | assert(image != (Image *) NULL); |
| 3914 | assert(image->signature == MagickSignature); |
| 3915 | if (image->debug != MagickFalse) |
| 3916 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3917 | assert(exception != (ExceptionInfo *) NULL); |
| 3918 | assert(exception->signature == MagickSignature); |
| 3919 | blur_image=CloneImage(image,0,0,MagickTrue,exception); |
| 3920 | if (blur_image == (Image *) NULL) |
| 3921 | return((Image *) NULL); |
| 3922 | if (SetImageStorageClass(blur_image,DirectClass) == MagickFalse) |
| 3923 | { |
| 3924 | InheritException(exception,&blur_image->exception); |
| 3925 | blur_image=DestroyImage(blur_image); |
| 3926 | return((Image *) NULL); |
| 3927 | } |
| 3928 | blur_center.x=(double) image->columns/2.0; |
| 3929 | blur_center.y=(double) image->rows/2.0; |
| 3930 | blur_radius=hypot(blur_center.x,blur_center.y); |
| 3931 | n=(unsigned long) fabs(4.0*DegreesToRadians(angle)*sqrt((double) blur_radius)+ |
| 3932 | 2UL); |
| 3933 | theta=DegreesToRadians(angle)/(MagickRealType) (n-1); |
| 3934 | cos_theta=(MagickRealType *) AcquireQuantumMemory((size_t) n, |
| 3935 | sizeof(*cos_theta)); |
| 3936 | sin_theta=(MagickRealType *) AcquireQuantumMemory((size_t) n, |
| 3937 | sizeof(*sin_theta)); |
| 3938 | if ((cos_theta == (MagickRealType *) NULL) || |
| 3939 | (sin_theta == (MagickRealType *) NULL)) |
| 3940 | { |
| 3941 | blur_image=DestroyImage(blur_image); |
| 3942 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 3943 | } |
| 3944 | offset=theta*(MagickRealType) (n-1)/2.0; |
| 3945 | for (i=0; i < (long) n; i++) |
| 3946 | { |
| 3947 | cos_theta[i]=cos((double) (theta*i-offset)); |
| 3948 | sin_theta[i]=sin((double) (theta*i-offset)); |
| 3949 | } |
| 3950 | /* |
| 3951 | Radial blur image. |
| 3952 | */ |
| 3953 | status=MagickTrue; |
| 3954 | progress=0; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 3955 | GetMagickPixelPacket(image,&bias); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3956 | image_view=AcquireCacheView(image); |
| 3957 | blur_view=AcquireCacheView(blur_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 3958 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 3959 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3960 | #endif |
| 3961 | for (y=0; y < (long) blur_image->rows; y++) |
| 3962 | { |
| 3963 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3964 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3965 | |
| 3966 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3967 | *restrict blur_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3968 | |
| 3969 | register long |
| 3970 | x; |
| 3971 | |
| 3972 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 3973 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3974 | |
| 3975 | if (status == MagickFalse) |
| 3976 | continue; |
| 3977 | q=GetCacheViewAuthenticPixels(blur_view,0,y,blur_image->columns,1, |
| 3978 | exception); |
| 3979 | if (q == (PixelPacket *) NULL) |
| 3980 | { |
| 3981 | status=MagickFalse; |
| 3982 | continue; |
| 3983 | } |
| 3984 | blur_indexes=GetCacheViewAuthenticIndexQueue(blur_view); |
| 3985 | for (x=0; x < (long) blur_image->columns; x++) |
| 3986 | { |
| 3987 | MagickPixelPacket |
| 3988 | qixel; |
| 3989 | |
| 3990 | MagickRealType |
| 3991 | normalize, |
| 3992 | radius; |
| 3993 | |
| 3994 | PixelPacket |
| 3995 | pixel; |
| 3996 | |
| 3997 | PointInfo |
| 3998 | center; |
| 3999 | |
| 4000 | register long |
| 4001 | i; |
| 4002 | |
| 4003 | unsigned long |
| 4004 | step; |
| 4005 | |
| 4006 | center.x=(double) x-blur_center.x; |
| 4007 | center.y=(double) y-blur_center.y; |
| 4008 | radius=hypot((double) center.x,center.y); |
| 4009 | if (radius == 0) |
| 4010 | step=1; |
| 4011 | else |
| 4012 | { |
| 4013 | step=(unsigned long) (blur_radius/radius); |
| 4014 | if (step == 0) |
| 4015 | step=1; |
| 4016 | else |
| 4017 | if (step >= n) |
| 4018 | step=n-1; |
| 4019 | } |
| 4020 | normalize=0.0; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 4021 | qixel=bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4022 | if (((channel & OpacityChannel) == 0) || (image->matte == MagickFalse)) |
| 4023 | { |
| 4024 | for (i=0; i < (long) n; i+=step) |
| 4025 | { |
| 4026 | (void) GetOneCacheViewVirtualPixel(image_view,(long) (blur_center.x+ |
| 4027 | center.x*cos_theta[i]-center.y*sin_theta[i]+0.5),(long) ( |
| 4028 | blur_center.y+center.x*sin_theta[i]+center.y*cos_theta[i]+0.5), |
| 4029 | &pixel,exception); |
| 4030 | qixel.red+=pixel.red; |
| 4031 | qixel.green+=pixel.green; |
| 4032 | qixel.blue+=pixel.blue; |
| 4033 | qixel.opacity+=pixel.opacity; |
| 4034 | if (image->colorspace == CMYKColorspace) |
| 4035 | { |
| 4036 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 4037 | qixel.index+=(*indexes); |
| 4038 | } |
| 4039 | normalize+=1.0; |
| 4040 | } |
| 4041 | normalize=1.0/(fabs((double) normalize) <= MagickEpsilon ? 1.0 : |
| 4042 | normalize); |
| 4043 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4044 | q->red=ClampToQuantum(normalize*qixel.red); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4045 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4046 | q->green=ClampToQuantum(normalize*qixel.green); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4047 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4048 | q->blue=ClampToQuantum(normalize*qixel.blue); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4049 | if ((channel & OpacityChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4050 | q->opacity=ClampToQuantum(normalize*qixel.opacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4051 | if (((channel & IndexChannel) != 0) && |
| 4052 | (image->colorspace == CMYKColorspace)) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4053 | blur_indexes[x]=(IndexPacket) ClampToQuantum(normalize*qixel.index); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4054 | } |
| 4055 | else |
| 4056 | { |
| 4057 | MagickRealType |
| 4058 | alpha, |
| 4059 | gamma; |
| 4060 | |
| 4061 | alpha=1.0; |
| 4062 | gamma=0.0; |
| 4063 | for (i=0; i < (long) n; i+=step) |
| 4064 | { |
| 4065 | (void) GetOneCacheViewVirtualPixel(image_view,(long) (blur_center.x+ |
| 4066 | center.x*cos_theta[i]-center.y*sin_theta[i]+0.5),(long) ( |
| 4067 | blur_center.y+center.x*sin_theta[i]+center.y*cos_theta[i]+0.5), |
| 4068 | &pixel,exception); |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 4069 | alpha=(MagickRealType) (QuantumScale* |
| 4070 | GetAlphaPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4071 | qixel.red+=alpha*pixel.red; |
| 4072 | qixel.green+=alpha*pixel.green; |
| 4073 | qixel.blue+=alpha*pixel.blue; |
| 4074 | qixel.opacity+=pixel.opacity; |
| 4075 | if (image->colorspace == CMYKColorspace) |
| 4076 | { |
| 4077 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 4078 | qixel.index+=alpha*(*indexes); |
| 4079 | } |
| 4080 | gamma+=alpha; |
| 4081 | normalize+=1.0; |
| 4082 | } |
| 4083 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 4084 | normalize=1.0/(fabs((double) normalize) <= MagickEpsilon ? 1.0 : |
| 4085 | normalize); |
| 4086 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4087 | q->red=ClampToQuantum(gamma*qixel.red); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4088 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4089 | q->green=ClampToQuantum(gamma*qixel.green); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4090 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4091 | q->blue=ClampToQuantum(gamma*qixel.blue); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4092 | if ((channel & OpacityChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4093 | q->opacity=ClampToQuantum(normalize*qixel.opacity); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4094 | if (((channel & IndexChannel) != 0) && |
| 4095 | (image->colorspace == CMYKColorspace)) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4096 | blur_indexes[x]=(IndexPacket) ClampToQuantum(gamma*qixel.index); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4097 | } |
| 4098 | q++; |
| 4099 | } |
| 4100 | if (SyncCacheViewAuthenticPixels(blur_view,exception) == MagickFalse) |
| 4101 | status=MagickFalse; |
| 4102 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 4103 | { |
| 4104 | MagickBooleanType |
| 4105 | proceed; |
| 4106 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 4107 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4108 | #pragma omp critical (MagickCore_RadialBlurImageChannel) |
| 4109 | #endif |
| 4110 | proceed=SetImageProgress(image,BlurImageTag,progress++,image->rows); |
| 4111 | if (proceed == MagickFalse) |
| 4112 | status=MagickFalse; |
| 4113 | } |
| 4114 | } |
| 4115 | blur_view=DestroyCacheView(blur_view); |
| 4116 | image_view=DestroyCacheView(image_view); |
| 4117 | cos_theta=(MagickRealType *) RelinquishMagickMemory(cos_theta); |
| 4118 | sin_theta=(MagickRealType *) RelinquishMagickMemory(sin_theta); |
| 4119 | if (status == MagickFalse) |
| 4120 | blur_image=DestroyImage(blur_image); |
| 4121 | return(blur_image); |
| 4122 | } |
| 4123 | |
| 4124 | /* |
| 4125 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4126 | % % |
| 4127 | % % |
| 4128 | % % |
| 4129 | % R e d u c e N o i s e I m a g e % |
| 4130 | % % |
| 4131 | % % |
| 4132 | % % |
| 4133 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4134 | % |
| 4135 | % ReduceNoiseImage() smooths the contours of an image while still preserving |
| 4136 | % edge information. The algorithm works by replacing each pixel with its |
| 4137 | % neighbor closest in value. A neighbor is defined by radius. Use a radius |
| 4138 | % of 0 and ReduceNoise() selects a suitable radius for you. |
| 4139 | % |
| 4140 | % The format of the ReduceNoiseImage method is: |
| 4141 | % |
| 4142 | % Image *ReduceNoiseImage(const Image *image,const double radius, |
| 4143 | % ExceptionInfo *exception) |
| 4144 | % |
| 4145 | % A description of each parameter follows: |
| 4146 | % |
| 4147 | % o image: the image. |
| 4148 | % |
| 4149 | % o radius: the radius of the pixel neighborhood. |
| 4150 | % |
| 4151 | % o exception: return any errors or warnings in this structure. |
| 4152 | % |
| 4153 | */ |
| 4154 | |
| 4155 | static MagickPixelPacket GetNonpeakMedianPixelList(MedianPixelList *pixel_list) |
| 4156 | { |
| 4157 | MagickPixelPacket |
| 4158 | pixel; |
| 4159 | |
| 4160 | register long |
| 4161 | channel; |
| 4162 | |
| 4163 | register MedianSkipList |
| 4164 | *list; |
| 4165 | |
| 4166 | unsigned long |
| 4167 | center, |
| 4168 | color, |
| 4169 | count, |
| 4170 | previous, |
| 4171 | next; |
| 4172 | |
| 4173 | unsigned short |
| 4174 | channels[5]; |
| 4175 | |
| 4176 | /* |
| 4177 | Finds the median value for each of the color. |
| 4178 | */ |
| 4179 | center=pixel_list->center; |
| 4180 | for (channel=0; channel < 5; channel++) |
| 4181 | { |
| 4182 | list=pixel_list->lists+channel; |
| 4183 | color=65536UL; |
| 4184 | next=list->nodes[color].next[0]; |
| 4185 | count=0; |
| 4186 | do |
| 4187 | { |
| 4188 | previous=color; |
| 4189 | color=next; |
| 4190 | next=list->nodes[color].next[0]; |
| 4191 | count+=list->nodes[color].count; |
| 4192 | } |
| 4193 | while (count <= center); |
| 4194 | if ((previous == 65536UL) && (next != 65536UL)) |
| 4195 | color=next; |
| 4196 | else |
| 4197 | if ((previous != 65536UL) && (next == 65536UL)) |
| 4198 | color=previous; |
| 4199 | channels[channel]=(unsigned short) color; |
| 4200 | } |
| 4201 | GetMagickPixelPacket((const Image *) NULL,&pixel); |
| 4202 | pixel.red=(MagickRealType) ScaleShortToQuantum(channels[0]); |
| 4203 | pixel.green=(MagickRealType) ScaleShortToQuantum(channels[1]); |
| 4204 | pixel.blue=(MagickRealType) ScaleShortToQuantum(channels[2]); |
| 4205 | pixel.opacity=(MagickRealType) ScaleShortToQuantum(channels[3]); |
| 4206 | pixel.index=(MagickRealType) ScaleShortToQuantum(channels[4]); |
| 4207 | return(pixel); |
| 4208 | } |
| 4209 | |
| 4210 | MagickExport Image *ReduceNoiseImage(const Image *image,const double radius, |
| 4211 | ExceptionInfo *exception) |
| 4212 | { |
| 4213 | #define ReduceNoiseImageTag "ReduceNoise/Image" |
| 4214 | |
cristy | fa11211 | 2010-01-04 17:48:07 +0000 | [diff] [blame] | 4215 | CacheView |
| 4216 | *image_view, |
| 4217 | *noise_view; |
| 4218 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4219 | Image |
| 4220 | *noise_image; |
| 4221 | |
| 4222 | long |
| 4223 | progress, |
| 4224 | y; |
| 4225 | |
| 4226 | MagickBooleanType |
| 4227 | status; |
| 4228 | |
| 4229 | MedianPixelList |
cristy | fa11211 | 2010-01-04 17:48:07 +0000 | [diff] [blame] | 4230 | **restrict pixel_list; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4231 | |
| 4232 | unsigned long |
| 4233 | width; |
| 4234 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4235 | /* |
| 4236 | Initialize noise image attributes. |
| 4237 | */ |
| 4238 | assert(image != (Image *) NULL); |
| 4239 | assert(image->signature == MagickSignature); |
| 4240 | if (image->debug != MagickFalse) |
| 4241 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4242 | assert(exception != (ExceptionInfo *) NULL); |
| 4243 | assert(exception->signature == MagickSignature); |
| 4244 | width=GetOptimalKernelWidth2D(radius,0.5); |
| 4245 | if ((image->columns < width) || (image->rows < width)) |
| 4246 | ThrowImageException(OptionError,"ImageSmallerThanKernelRadius"); |
| 4247 | noise_image=CloneImage(image,image->columns,image->rows,MagickTrue, |
| 4248 | exception); |
| 4249 | if (noise_image == (Image *) NULL) |
| 4250 | return((Image *) NULL); |
| 4251 | if (SetImageStorageClass(noise_image,DirectClass) == MagickFalse) |
| 4252 | { |
| 4253 | InheritException(exception,&noise_image->exception); |
| 4254 | noise_image=DestroyImage(noise_image); |
| 4255 | return((Image *) NULL); |
| 4256 | } |
| 4257 | pixel_list=AcquireMedianPixelListThreadSet(width); |
| 4258 | if (pixel_list == (MedianPixelList **) NULL) |
| 4259 | { |
| 4260 | noise_image=DestroyImage(noise_image); |
| 4261 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 4262 | } |
| 4263 | /* |
| 4264 | Reduce noise image. |
| 4265 | */ |
| 4266 | status=MagickTrue; |
| 4267 | progress=0; |
| 4268 | image_view=AcquireCacheView(image); |
| 4269 | noise_view=AcquireCacheView(noise_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 4270 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 4271 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4272 | #endif |
| 4273 | for (y=0; y < (long) noise_image->rows; y++) |
| 4274 | { |
| 4275 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4276 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4277 | |
| 4278 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4279 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4280 | |
| 4281 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4282 | *restrict noise_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4283 | |
| 4284 | register long |
| 4285 | id, |
| 4286 | x; |
| 4287 | |
| 4288 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4289 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4290 | |
| 4291 | if (status == MagickFalse) |
| 4292 | continue; |
| 4293 | p=GetCacheViewVirtualPixels(image_view,-((long) width/2L),y-(long) (width/ |
| 4294 | 2L),image->columns+width,width,exception); |
| 4295 | q=QueueCacheViewAuthenticPixels(noise_view,0,y,noise_image->columns,1, |
| 4296 | exception); |
| 4297 | if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 4298 | { |
| 4299 | status=MagickFalse; |
| 4300 | continue; |
| 4301 | } |
| 4302 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 4303 | noise_indexes=GetCacheViewAuthenticIndexQueue(noise_view); |
| 4304 | id=GetOpenMPThreadId(); |
| 4305 | for (x=0; x < (long) noise_image->columns; x++) |
| 4306 | { |
| 4307 | MagickPixelPacket |
| 4308 | pixel; |
| 4309 | |
| 4310 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4311 | *restrict r; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4312 | |
| 4313 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4314 | *restrict s; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4315 | |
| 4316 | register long |
| 4317 | u, |
| 4318 | v; |
| 4319 | |
| 4320 | r=p; |
| 4321 | s=indexes+x; |
| 4322 | ResetMedianPixelList(pixel_list[id]); |
| 4323 | for (v=0; v < (long) width; v++) |
| 4324 | { |
| 4325 | for (u=0; u < (long) width; u++) |
| 4326 | InsertMedianPixelList(image,r+u,s+u,pixel_list[id]); |
| 4327 | r+=image->columns+width; |
| 4328 | s+=image->columns+width; |
| 4329 | } |
| 4330 | pixel=GetNonpeakMedianPixelList(pixel_list[id]); |
| 4331 | SetPixelPacket(noise_image,&pixel,q,noise_indexes+x); |
| 4332 | p++; |
| 4333 | q++; |
| 4334 | } |
| 4335 | if (SyncCacheViewAuthenticPixels(noise_view,exception) == MagickFalse) |
| 4336 | status=MagickFalse; |
| 4337 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 4338 | { |
| 4339 | MagickBooleanType |
| 4340 | proceed; |
| 4341 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 4342 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4343 | #pragma omp critical (MagickCore_ReduceNoiseImage) |
| 4344 | #endif |
| 4345 | proceed=SetImageProgress(image,ReduceNoiseImageTag,progress++, |
| 4346 | image->rows); |
| 4347 | if (proceed == MagickFalse) |
| 4348 | status=MagickFalse; |
| 4349 | } |
| 4350 | } |
| 4351 | noise_view=DestroyCacheView(noise_view); |
| 4352 | image_view=DestroyCacheView(image_view); |
| 4353 | pixel_list=DestroyMedianPixelListThreadSet(pixel_list); |
| 4354 | return(noise_image); |
| 4355 | } |
| 4356 | |
| 4357 | /* |
| 4358 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4359 | % % |
| 4360 | % % |
| 4361 | % % |
| 4362 | % S e l e c t i v e B l u r I m a g e % |
| 4363 | % % |
| 4364 | % % |
| 4365 | % % |
| 4366 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4367 | % |
| 4368 | % SelectiveBlurImage() selectively blur pixels within a contrast threshold. |
| 4369 | % It is similar to the unsharpen mask that sharpens everything with contrast |
| 4370 | % above a certain threshold. |
| 4371 | % |
| 4372 | % The format of the SelectiveBlurImage method is: |
| 4373 | % |
| 4374 | % Image *SelectiveBlurImage(const Image *image,const double radius, |
| 4375 | % const double sigma,const double threshold,ExceptionInfo *exception) |
| 4376 | % Image *SelectiveBlurImageChannel(const Image *image, |
| 4377 | % const ChannelType channel,const double radius,const double sigma, |
| 4378 | % const double threshold,ExceptionInfo *exception) |
| 4379 | % |
| 4380 | % A description of each parameter follows: |
| 4381 | % |
| 4382 | % o image: the image. |
| 4383 | % |
| 4384 | % o channel: the channel type. |
| 4385 | % |
| 4386 | % o radius: the radius of the Gaussian, in pixels, not counting the center |
| 4387 | % pixel. |
| 4388 | % |
| 4389 | % o sigma: the standard deviation of the Gaussian, in pixels. |
| 4390 | % |
| 4391 | % o threshold: only pixels within this contrast threshold are included |
| 4392 | % in the blur operation. |
| 4393 | % |
| 4394 | % o exception: return any errors or warnings in this structure. |
| 4395 | % |
| 4396 | */ |
| 4397 | |
| 4398 | static inline MagickBooleanType SelectiveContrast(const PixelPacket *p, |
| 4399 | const PixelPacket *q,const double threshold) |
| 4400 | { |
| 4401 | if (fabs(PixelIntensity(p)-PixelIntensity(q)) < threshold) |
| 4402 | return(MagickTrue); |
| 4403 | return(MagickFalse); |
| 4404 | } |
| 4405 | |
| 4406 | MagickExport Image *SelectiveBlurImage(const Image *image,const double radius, |
| 4407 | const double sigma,const double threshold,ExceptionInfo *exception) |
| 4408 | { |
| 4409 | Image |
| 4410 | *blur_image; |
| 4411 | |
| 4412 | blur_image=SelectiveBlurImageChannel(image,DefaultChannels,radius,sigma, |
| 4413 | threshold,exception); |
| 4414 | return(blur_image); |
| 4415 | } |
| 4416 | |
| 4417 | MagickExport Image *SelectiveBlurImageChannel(const Image *image, |
| 4418 | const ChannelType channel,const double radius,const double sigma, |
| 4419 | const double threshold,ExceptionInfo *exception) |
| 4420 | { |
| 4421 | #define SelectiveBlurImageTag "SelectiveBlur/Image" |
| 4422 | |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 4423 | CacheView |
| 4424 | *blur_view, |
| 4425 | *image_view; |
| 4426 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4427 | double |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4428 | *kernel; |
| 4429 | |
| 4430 | Image |
| 4431 | *blur_image; |
| 4432 | |
| 4433 | long |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 4434 | j, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4435 | progress, |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 4436 | u, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4437 | v, |
| 4438 | y; |
| 4439 | |
| 4440 | MagickBooleanType |
| 4441 | status; |
| 4442 | |
| 4443 | MagickPixelPacket |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4444 | bias; |
| 4445 | |
| 4446 | register long |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 4447 | i; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4448 | |
| 4449 | unsigned long |
| 4450 | width; |
| 4451 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4452 | /* |
| 4453 | Initialize blur image attributes. |
| 4454 | */ |
| 4455 | assert(image != (Image *) NULL); |
| 4456 | assert(image->signature == MagickSignature); |
| 4457 | if (image->debug != MagickFalse) |
| 4458 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4459 | assert(exception != (ExceptionInfo *) NULL); |
| 4460 | assert(exception->signature == MagickSignature); |
| 4461 | width=GetOptimalKernelWidth1D(radius,sigma); |
| 4462 | kernel=(double *) AcquireQuantumMemory((size_t) width,width*sizeof(*kernel)); |
| 4463 | if (kernel == (double *) NULL) |
| 4464 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 4465 | j=(long) width/2; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4466 | i=0; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 4467 | for (v=(-j); v <= j; v++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4468 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 4469 | for (u=(-j); u <= j; u++) |
| 4470 | kernel[i++]=exp(-((double) u*u+v*v)/(2.0*MagickSigma*MagickSigma))/ |
| 4471 | (2.0*MagickPI*MagickSigma*MagickSigma); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4472 | } |
| 4473 | if (image->debug != MagickFalse) |
| 4474 | { |
| 4475 | char |
| 4476 | format[MaxTextExtent], |
| 4477 | *message; |
| 4478 | |
| 4479 | long |
| 4480 | u, |
| 4481 | v; |
| 4482 | |
| 4483 | register const double |
| 4484 | *k; |
| 4485 | |
| 4486 | (void) LogMagickEvent(TransformEvent,GetMagickModule(), |
| 4487 | " SelectiveBlurImage with %ldx%ld kernel:",width,width); |
| 4488 | message=AcquireString(""); |
| 4489 | k=kernel; |
| 4490 | for (v=0; v < (long) width; v++) |
| 4491 | { |
| 4492 | *message='\0'; |
| 4493 | (void) FormatMagickString(format,MaxTextExtent,"%ld: ",v); |
| 4494 | (void) ConcatenateString(&message,format); |
| 4495 | for (u=0; u < (long) width; u++) |
| 4496 | { |
| 4497 | (void) FormatMagickString(format,MaxTextExtent,"%+f ",*k++); |
| 4498 | (void) ConcatenateString(&message,format); |
| 4499 | } |
| 4500 | (void) LogMagickEvent(TransformEvent,GetMagickModule(),"%s",message); |
| 4501 | } |
| 4502 | message=DestroyString(message); |
| 4503 | } |
| 4504 | blur_image=CloneImage(image,0,0,MagickTrue,exception); |
| 4505 | if (blur_image == (Image *) NULL) |
| 4506 | return((Image *) NULL); |
| 4507 | if (SetImageStorageClass(blur_image,DirectClass) == MagickFalse) |
| 4508 | { |
| 4509 | InheritException(exception,&blur_image->exception); |
| 4510 | blur_image=DestroyImage(blur_image); |
| 4511 | return((Image *) NULL); |
| 4512 | } |
| 4513 | /* |
| 4514 | Threshold blur image. |
| 4515 | */ |
| 4516 | status=MagickTrue; |
| 4517 | progress=0; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 4518 | GetMagickPixelPacket(image,&bias); |
| 4519 | SetMagickPixelPacketBias(image,&bias); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4520 | image_view=AcquireCacheView(image); |
| 4521 | blur_view=AcquireCacheView(blur_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 4522 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 4523 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4524 | #endif |
| 4525 | for (y=0; y < (long) image->rows; y++) |
| 4526 | { |
| 4527 | MagickBooleanType |
| 4528 | sync; |
| 4529 | |
| 4530 | MagickRealType |
| 4531 | gamma; |
| 4532 | |
| 4533 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4534 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4535 | |
| 4536 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4537 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4538 | |
| 4539 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4540 | *restrict blur_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4541 | |
| 4542 | register long |
| 4543 | x; |
| 4544 | |
| 4545 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4546 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4547 | |
| 4548 | if (status == MagickFalse) |
| 4549 | continue; |
| 4550 | p=GetCacheViewVirtualPixels(image_view,-((long) width/2L),y-(long) (width/ |
| 4551 | 2L),image->columns+width,width,exception); |
| 4552 | q=GetCacheViewAuthenticPixels(blur_view,0,y,blur_image->columns,1, |
| 4553 | exception); |
| 4554 | if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 4555 | { |
| 4556 | status=MagickFalse; |
| 4557 | continue; |
| 4558 | } |
| 4559 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 4560 | blur_indexes=GetCacheViewAuthenticIndexQueue(blur_view); |
| 4561 | for (x=0; x < (long) image->columns; x++) |
| 4562 | { |
| 4563 | long |
| 4564 | j, |
| 4565 | v; |
| 4566 | |
| 4567 | MagickPixelPacket |
| 4568 | pixel; |
| 4569 | |
| 4570 | register const double |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4571 | *restrict k; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4572 | |
| 4573 | register long |
| 4574 | u; |
| 4575 | |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 4576 | pixel=bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4577 | k=kernel; |
| 4578 | gamma=0.0; |
| 4579 | j=0; |
| 4580 | if (((channel & OpacityChannel) == 0) || (image->matte == MagickFalse)) |
| 4581 | { |
| 4582 | for (v=0; v < (long) width; v++) |
| 4583 | { |
| 4584 | for (u=0; u < (long) width; u++) |
| 4585 | { |
| 4586 | if (SelectiveContrast(p+u+j,q,threshold) != MagickFalse) |
| 4587 | { |
| 4588 | pixel.red+=(*k)*(p+u+j)->red; |
| 4589 | pixel.green+=(*k)*(p+u+j)->green; |
| 4590 | pixel.blue+=(*k)*(p+u+j)->blue; |
| 4591 | gamma+=(*k); |
| 4592 | k++; |
| 4593 | } |
| 4594 | } |
| 4595 | j+=image->columns+width; |
| 4596 | } |
| 4597 | if (gamma != 0.0) |
| 4598 | { |
| 4599 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 4600 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4601 | q->red=ClampToQuantum(gamma*GetRedPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4602 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4603 | q->green=ClampToQuantum(gamma*GetGreenPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4604 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4605 | q->blue=ClampToQuantum(gamma*GetBluePixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4606 | } |
| 4607 | if ((channel & OpacityChannel) != 0) |
| 4608 | { |
| 4609 | gamma=0.0; |
| 4610 | j=0; |
| 4611 | for (v=0; v < (long) width; v++) |
| 4612 | { |
| 4613 | for (u=0; u < (long) width; u++) |
| 4614 | { |
| 4615 | if (SelectiveContrast(p+u+j,q,threshold) != MagickFalse) |
| 4616 | { |
| 4617 | pixel.opacity+=(*k)*(p+u+j)->opacity; |
| 4618 | gamma+=(*k); |
| 4619 | k++; |
| 4620 | } |
| 4621 | } |
| 4622 | j+=image->columns+width; |
| 4623 | } |
| 4624 | if (gamma != 0.0) |
| 4625 | { |
| 4626 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : |
| 4627 | gamma); |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4628 | SetOpacityPixelComponent(q,ClampToQuantum(gamma* |
| 4629 | GetOpacityPixelComponent(&pixel))); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4630 | } |
| 4631 | } |
| 4632 | if (((channel & IndexChannel) != 0) && |
| 4633 | (image->colorspace == CMYKColorspace)) |
| 4634 | { |
| 4635 | gamma=0.0; |
| 4636 | j=0; |
| 4637 | for (v=0; v < (long) width; v++) |
| 4638 | { |
| 4639 | for (u=0; u < (long) width; u++) |
| 4640 | { |
| 4641 | if (SelectiveContrast(p+u+j,q,threshold) != MagickFalse) |
| 4642 | { |
| 4643 | pixel.index+=(*k)*indexes[x+u+j]; |
| 4644 | gamma+=(*k); |
| 4645 | k++; |
| 4646 | } |
| 4647 | } |
| 4648 | j+=image->columns+width; |
| 4649 | } |
| 4650 | if (gamma != 0.0) |
| 4651 | { |
| 4652 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : |
| 4653 | gamma); |
cristy | 6db4812 | 2010-01-11 00:18:07 +0000 | [diff] [blame] | 4654 | blur_indexes[x]=ClampToQuantum(gamma* |
| 4655 | GetIndexPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4656 | } |
| 4657 | } |
| 4658 | } |
| 4659 | else |
| 4660 | { |
| 4661 | MagickRealType |
| 4662 | alpha; |
| 4663 | |
| 4664 | for (v=0; v < (long) width; v++) |
| 4665 | { |
| 4666 | for (u=0; u < (long) width; u++) |
| 4667 | { |
| 4668 | if (SelectiveContrast(p+u+j,q,threshold) != MagickFalse) |
| 4669 | { |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 4670 | alpha=(MagickRealType) (QuantumScale* |
| 4671 | GetAlphaPixelComponent(p+u+j)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4672 | pixel.red+=(*k)*alpha*(p+u+j)->red; |
| 4673 | pixel.green+=(*k)*alpha*(p+u+j)->green; |
| 4674 | pixel.blue+=(*k)*alpha*(p+u+j)->blue; |
| 4675 | pixel.opacity+=(*k)*(p+u+j)->opacity; |
| 4676 | gamma+=(*k)*alpha; |
| 4677 | k++; |
| 4678 | } |
| 4679 | } |
| 4680 | j+=image->columns+width; |
| 4681 | } |
| 4682 | if (gamma != 0.0) |
| 4683 | { |
| 4684 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma); |
| 4685 | if ((channel & RedChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4686 | q->red=ClampToQuantum(gamma*GetRedPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4687 | if ((channel & GreenChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4688 | q->green=ClampToQuantum(gamma*GetGreenPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4689 | if ((channel & BlueChannel) != 0) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4690 | q->blue=ClampToQuantum(gamma*GetBluePixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4691 | } |
| 4692 | if ((channel & OpacityChannel) != 0) |
| 4693 | { |
| 4694 | gamma=0.0; |
| 4695 | j=0; |
| 4696 | for (v=0; v < (long) width; v++) |
| 4697 | { |
| 4698 | for (u=0; u < (long) width; u++) |
| 4699 | { |
| 4700 | if (SelectiveContrast(p+u+j,q,threshold) != MagickFalse) |
| 4701 | { |
| 4702 | pixel.opacity+=(*k)*(p+u+j)->opacity; |
| 4703 | gamma+=(*k); |
| 4704 | k++; |
| 4705 | } |
| 4706 | } |
| 4707 | j+=image->columns+width; |
| 4708 | } |
| 4709 | if (gamma != 0.0) |
| 4710 | { |
| 4711 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : |
| 4712 | gamma); |
cristy | 6db4812 | 2010-01-11 00:18:07 +0000 | [diff] [blame] | 4713 | SetOpacityPixelComponent(q, |
| 4714 | ClampOpacityPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4715 | } |
| 4716 | } |
| 4717 | if (((channel & IndexChannel) != 0) && |
| 4718 | (image->colorspace == CMYKColorspace)) |
| 4719 | { |
| 4720 | gamma=0.0; |
| 4721 | j=0; |
| 4722 | for (v=0; v < (long) width; v++) |
| 4723 | { |
| 4724 | for (u=0; u < (long) width; u++) |
| 4725 | { |
| 4726 | if (SelectiveContrast(p+u+j,q,threshold) != MagickFalse) |
| 4727 | { |
cristy | 46f0820 | 2010-01-10 04:04:21 +0000 | [diff] [blame] | 4728 | alpha=(MagickRealType) (QuantumScale* |
| 4729 | GetAlphaPixelComponent(p+u+j)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4730 | pixel.index+=(*k)*alpha*indexes[x+u+j]; |
| 4731 | gamma+=(*k); |
| 4732 | k++; |
| 4733 | } |
| 4734 | } |
| 4735 | j+=image->columns+width; |
| 4736 | } |
| 4737 | if (gamma != 0.0) |
| 4738 | { |
| 4739 | gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : |
| 4740 | gamma); |
cristy | 6db4812 | 2010-01-11 00:18:07 +0000 | [diff] [blame] | 4741 | blur_indexes[x]=ClampToQuantum(gamma* |
| 4742 | GetIndexPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4743 | } |
| 4744 | } |
| 4745 | } |
| 4746 | p++; |
| 4747 | q++; |
| 4748 | } |
| 4749 | sync=SyncCacheViewAuthenticPixels(blur_view,exception); |
| 4750 | if (sync == MagickFalse) |
| 4751 | status=MagickFalse; |
| 4752 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 4753 | { |
| 4754 | MagickBooleanType |
| 4755 | proceed; |
| 4756 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 4757 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4758 | #pragma omp critical (MagickCore_SelectiveBlurImageChannel) |
| 4759 | #endif |
| 4760 | proceed=SetImageProgress(image,SelectiveBlurImageTag,progress++, |
| 4761 | image->rows); |
| 4762 | if (proceed == MagickFalse) |
| 4763 | status=MagickFalse; |
| 4764 | } |
| 4765 | } |
| 4766 | blur_image->type=image->type; |
| 4767 | blur_view=DestroyCacheView(blur_view); |
| 4768 | image_view=DestroyCacheView(image_view); |
| 4769 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 4770 | if (status == MagickFalse) |
| 4771 | blur_image=DestroyImage(blur_image); |
| 4772 | return(blur_image); |
| 4773 | } |
| 4774 | |
| 4775 | /* |
| 4776 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4777 | % % |
| 4778 | % % |
| 4779 | % % |
| 4780 | % S h a d e I m a g e % |
| 4781 | % % |
| 4782 | % % |
| 4783 | % % |
| 4784 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4785 | % |
| 4786 | % ShadeImage() shines a distant light on an image to create a |
| 4787 | % three-dimensional effect. You control the positioning of the light with |
| 4788 | % azimuth and elevation; azimuth is measured in degrees off the x axis |
| 4789 | % and elevation is measured in pixels above the Z axis. |
| 4790 | % |
| 4791 | % The format of the ShadeImage method is: |
| 4792 | % |
| 4793 | % Image *ShadeImage(const Image *image,const MagickBooleanType gray, |
| 4794 | % const double azimuth,const double elevation,ExceptionInfo *exception) |
| 4795 | % |
| 4796 | % A description of each parameter follows: |
| 4797 | % |
| 4798 | % o image: the image. |
| 4799 | % |
| 4800 | % o gray: A value other than zero shades the intensity of each pixel. |
| 4801 | % |
| 4802 | % o azimuth, elevation: Define the light source direction. |
| 4803 | % |
| 4804 | % o exception: return any errors or warnings in this structure. |
| 4805 | % |
| 4806 | */ |
| 4807 | MagickExport Image *ShadeImage(const Image *image,const MagickBooleanType gray, |
| 4808 | const double azimuth,const double elevation,ExceptionInfo *exception) |
| 4809 | { |
| 4810 | #define ShadeImageTag "Shade/Image" |
| 4811 | |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 4812 | CacheView |
| 4813 | *image_view, |
| 4814 | *shade_view; |
| 4815 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4816 | Image |
| 4817 | *shade_image; |
| 4818 | |
| 4819 | long |
| 4820 | progress, |
| 4821 | y; |
| 4822 | |
| 4823 | MagickBooleanType |
| 4824 | status; |
| 4825 | |
| 4826 | PrimaryInfo |
| 4827 | light; |
| 4828 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4829 | /* |
| 4830 | Initialize shaded image attributes. |
| 4831 | */ |
| 4832 | assert(image != (const Image *) NULL); |
| 4833 | assert(image->signature == MagickSignature); |
| 4834 | if (image->debug != MagickFalse) |
| 4835 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 4836 | assert(exception != (ExceptionInfo *) NULL); |
| 4837 | assert(exception->signature == MagickSignature); |
| 4838 | shade_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception); |
| 4839 | if (shade_image == (Image *) NULL) |
| 4840 | return((Image *) NULL); |
| 4841 | if (SetImageStorageClass(shade_image,DirectClass) == MagickFalse) |
| 4842 | { |
| 4843 | InheritException(exception,&shade_image->exception); |
| 4844 | shade_image=DestroyImage(shade_image); |
| 4845 | return((Image *) NULL); |
| 4846 | } |
| 4847 | /* |
| 4848 | Compute the light vector. |
| 4849 | */ |
| 4850 | light.x=(double) QuantumRange*cos(DegreesToRadians(azimuth))* |
| 4851 | cos(DegreesToRadians(elevation)); |
| 4852 | light.y=(double) QuantumRange*sin(DegreesToRadians(azimuth))* |
| 4853 | cos(DegreesToRadians(elevation)); |
| 4854 | light.z=(double) QuantumRange*sin(DegreesToRadians(elevation)); |
| 4855 | /* |
| 4856 | Shade image. |
| 4857 | */ |
| 4858 | status=MagickTrue; |
| 4859 | progress=0; |
| 4860 | image_view=AcquireCacheView(image); |
| 4861 | shade_view=AcquireCacheView(shade_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 4862 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 4863 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4864 | #endif |
| 4865 | for (y=0; y < (long) image->rows; y++) |
| 4866 | { |
| 4867 | MagickRealType |
| 4868 | distance, |
| 4869 | normal_distance, |
| 4870 | shade; |
| 4871 | |
| 4872 | PrimaryInfo |
| 4873 | normal; |
| 4874 | |
| 4875 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4876 | *restrict p, |
| 4877 | *restrict s0, |
| 4878 | *restrict s1, |
| 4879 | *restrict s2; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4880 | |
| 4881 | register long |
| 4882 | x; |
| 4883 | |
| 4884 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 4885 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4886 | |
| 4887 | if (status == MagickFalse) |
| 4888 | continue; |
| 4889 | p=GetCacheViewVirtualPixels(image_view,-1,y-1,image->columns+2,3,exception); |
| 4890 | q=QueueCacheViewAuthenticPixels(shade_view,0,y,shade_image->columns,1, |
| 4891 | exception); |
| 4892 | if ((p == (PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 4893 | { |
| 4894 | status=MagickFalse; |
| 4895 | continue; |
| 4896 | } |
| 4897 | /* |
| 4898 | Shade this row of pixels. |
| 4899 | */ |
| 4900 | normal.z=2.0*(double) QuantumRange; /* constant Z of surface normal */ |
| 4901 | s0=p+1; |
| 4902 | s1=s0+image->columns+2; |
| 4903 | s2=s1+image->columns+2; |
| 4904 | for (x=0; x < (long) image->columns; x++) |
| 4905 | { |
| 4906 | /* |
| 4907 | Determine the surface normal and compute shading. |
| 4908 | */ |
| 4909 | normal.x=(double) (PixelIntensity(s0-1)+PixelIntensity(s1-1)+ |
| 4910 | PixelIntensity(s2-1)-PixelIntensity(s0+1)-PixelIntensity(s1+1)- |
| 4911 | PixelIntensity(s2+1)); |
| 4912 | normal.y=(double) (PixelIntensity(s2-1)+PixelIntensity(s2)+ |
| 4913 | PixelIntensity(s2+1)-PixelIntensity(s0-1)-PixelIntensity(s0)- |
| 4914 | PixelIntensity(s0+1)); |
| 4915 | if ((normal.x == 0.0) && (normal.y == 0.0)) |
| 4916 | shade=light.z; |
| 4917 | else |
| 4918 | { |
| 4919 | shade=0.0; |
| 4920 | distance=normal.x*light.x+normal.y*light.y+normal.z*light.z; |
| 4921 | if (distance > MagickEpsilon) |
| 4922 | { |
| 4923 | normal_distance= |
| 4924 | normal.x*normal.x+normal.y*normal.y+normal.z*normal.z; |
| 4925 | if (normal_distance > (MagickEpsilon*MagickEpsilon)) |
| 4926 | shade=distance/sqrt((double) normal_distance); |
| 4927 | } |
| 4928 | } |
| 4929 | if (gray != MagickFalse) |
| 4930 | { |
| 4931 | q->red=(Quantum) shade; |
| 4932 | q->green=(Quantum) shade; |
| 4933 | q->blue=(Quantum) shade; |
| 4934 | } |
| 4935 | else |
| 4936 | { |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 4937 | q->red=ClampToQuantum(QuantumScale*shade*s1->red); |
| 4938 | q->green=ClampToQuantum(QuantumScale*shade*s1->green); |
| 4939 | q->blue=ClampToQuantum(QuantumScale*shade*s1->blue); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4940 | } |
| 4941 | q->opacity=s1->opacity; |
| 4942 | s0++; |
| 4943 | s1++; |
| 4944 | s2++; |
| 4945 | q++; |
| 4946 | } |
| 4947 | if (SyncCacheViewAuthenticPixels(shade_view,exception) == MagickFalse) |
| 4948 | status=MagickFalse; |
| 4949 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 4950 | { |
| 4951 | MagickBooleanType |
| 4952 | proceed; |
| 4953 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 4954 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4955 | #pragma omp critical (MagickCore_ShadeImage) |
| 4956 | #endif |
| 4957 | proceed=SetImageProgress(image,ShadeImageTag,progress++,image->rows); |
| 4958 | if (proceed == MagickFalse) |
| 4959 | status=MagickFalse; |
| 4960 | } |
| 4961 | } |
| 4962 | shade_view=DestroyCacheView(shade_view); |
| 4963 | image_view=DestroyCacheView(image_view); |
| 4964 | if (status == MagickFalse) |
| 4965 | shade_image=DestroyImage(shade_image); |
| 4966 | return(shade_image); |
| 4967 | } |
| 4968 | |
| 4969 | /* |
| 4970 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4971 | % % |
| 4972 | % % |
| 4973 | % % |
| 4974 | % S h a r p e n I m a g e % |
| 4975 | % % |
| 4976 | % % |
| 4977 | % % |
| 4978 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4979 | % |
| 4980 | % SharpenImage() sharpens the image. We convolve the image with a Gaussian |
| 4981 | % operator of the given radius and standard deviation (sigma). For |
| 4982 | % reasonable results, radius should be larger than sigma. Use a radius of 0 |
| 4983 | % and SharpenImage() selects a suitable radius for you. |
| 4984 | % |
| 4985 | % Using a separable kernel would be faster, but the negative weights cancel |
| 4986 | % out on the corners of the kernel producing often undesirable ringing in the |
| 4987 | % filtered result; this can be avoided by using a 2D gaussian shaped image |
| 4988 | % sharpening kernel instead. |
| 4989 | % |
| 4990 | % The format of the SharpenImage method is: |
| 4991 | % |
| 4992 | % Image *SharpenImage(const Image *image,const double radius, |
| 4993 | % const double sigma,ExceptionInfo *exception) |
| 4994 | % Image *SharpenImageChannel(const Image *image,const ChannelType channel, |
| 4995 | % const double radius,const double sigma,ExceptionInfo *exception) |
| 4996 | % |
| 4997 | % A description of each parameter follows: |
| 4998 | % |
| 4999 | % o image: the image. |
| 5000 | % |
| 5001 | % o channel: the channel type. |
| 5002 | % |
| 5003 | % o radius: the radius of the Gaussian, in pixels, not counting the center |
| 5004 | % pixel. |
| 5005 | % |
| 5006 | % o sigma: the standard deviation of the Laplacian, in pixels. |
| 5007 | % |
| 5008 | % o exception: return any errors or warnings in this structure. |
| 5009 | % |
| 5010 | */ |
| 5011 | |
| 5012 | MagickExport Image *SharpenImage(const Image *image,const double radius, |
| 5013 | const double sigma,ExceptionInfo *exception) |
| 5014 | { |
| 5015 | Image |
| 5016 | *sharp_image; |
| 5017 | |
| 5018 | sharp_image=SharpenImageChannel(image,DefaultChannels,radius,sigma,exception); |
| 5019 | return(sharp_image); |
| 5020 | } |
| 5021 | |
| 5022 | MagickExport Image *SharpenImageChannel(const Image *image, |
| 5023 | const ChannelType channel,const double radius,const double sigma, |
| 5024 | ExceptionInfo *exception) |
| 5025 | { |
| 5026 | double |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 5027 | *kernel, |
| 5028 | normalize; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5029 | |
| 5030 | Image |
| 5031 | *sharp_image; |
| 5032 | |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 5033 | long |
| 5034 | j, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5035 | u, |
| 5036 | v; |
| 5037 | |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 5038 | register long |
| 5039 | i; |
| 5040 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5041 | unsigned long |
| 5042 | width; |
| 5043 | |
| 5044 | assert(image != (const Image *) NULL); |
| 5045 | assert(image->signature == MagickSignature); |
| 5046 | if (image->debug != MagickFalse) |
| 5047 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 5048 | assert(exception != (ExceptionInfo *) NULL); |
| 5049 | assert(exception->signature == MagickSignature); |
| 5050 | width=GetOptimalKernelWidth2D(radius,sigma); |
| 5051 | kernel=(double *) AcquireQuantumMemory((size_t) width*width,sizeof(*kernel)); |
| 5052 | if (kernel == (double *) NULL) |
| 5053 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5054 | normalize=0.0; |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 5055 | j=(long) width/2; |
| 5056 | i=0; |
| 5057 | for (v=(-j); v <= j; v++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5058 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 5059 | for (u=(-j); u <= j; u++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5060 | { |
cristy | 47e0050 | 2009-12-17 19:19:57 +0000 | [diff] [blame] | 5061 | kernel[i]=(-exp(-((double) u*u+v*v)/(2.0*MagickSigma*MagickSigma))/ |
| 5062 | (2.0*MagickPI*MagickSigma*MagickSigma)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5063 | normalize+=kernel[i]; |
| 5064 | i++; |
| 5065 | } |
| 5066 | } |
| 5067 | kernel[i/2]=(double) ((-2.0)*normalize); |
| 5068 | sharp_image=ConvolveImageChannel(image,channel,width,kernel,exception); |
| 5069 | kernel=(double *) RelinquishMagickMemory(kernel); |
| 5070 | return(sharp_image); |
| 5071 | } |
| 5072 | |
| 5073 | /* |
| 5074 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5075 | % % |
| 5076 | % % |
| 5077 | % % |
| 5078 | % S p r e a d I m a g e % |
| 5079 | % % |
| 5080 | % % |
| 5081 | % % |
| 5082 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5083 | % |
| 5084 | % SpreadImage() is a special effects method that randomly displaces each |
| 5085 | % pixel in a block defined by the radius parameter. |
| 5086 | % |
| 5087 | % The format of the SpreadImage method is: |
| 5088 | % |
| 5089 | % Image *SpreadImage(const Image *image,const double radius, |
| 5090 | % ExceptionInfo *exception) |
| 5091 | % |
| 5092 | % A description of each parameter follows: |
| 5093 | % |
| 5094 | % o image: the image. |
| 5095 | % |
| 5096 | % o radius: Choose a random pixel in a neighborhood of this extent. |
| 5097 | % |
| 5098 | % o exception: return any errors or warnings in this structure. |
| 5099 | % |
| 5100 | */ |
| 5101 | MagickExport Image *SpreadImage(const Image *image,const double radius, |
| 5102 | ExceptionInfo *exception) |
| 5103 | { |
| 5104 | #define SpreadImageTag "Spread/Image" |
| 5105 | |
cristy | fa11211 | 2010-01-04 17:48:07 +0000 | [diff] [blame] | 5106 | CacheView |
| 5107 | *image_view; |
| 5108 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5109 | Image |
| 5110 | *spread_image; |
| 5111 | |
| 5112 | long |
| 5113 | progress, |
| 5114 | y; |
| 5115 | |
| 5116 | MagickBooleanType |
| 5117 | status; |
| 5118 | |
| 5119 | MagickPixelPacket |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 5120 | bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5121 | |
| 5122 | RandomInfo |
cristy | fa11211 | 2010-01-04 17:48:07 +0000 | [diff] [blame] | 5123 | **restrict random_info; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5124 | |
| 5125 | ResampleFilter |
cristy | fa11211 | 2010-01-04 17:48:07 +0000 | [diff] [blame] | 5126 | **restrict resample_filter; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5127 | |
| 5128 | unsigned long |
| 5129 | width; |
| 5130 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5131 | /* |
| 5132 | Initialize spread image attributes. |
| 5133 | */ |
| 5134 | assert(image != (Image *) NULL); |
| 5135 | assert(image->signature == MagickSignature); |
| 5136 | if (image->debug != MagickFalse) |
| 5137 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 5138 | assert(exception != (ExceptionInfo *) NULL); |
| 5139 | assert(exception->signature == MagickSignature); |
| 5140 | spread_image=CloneImage(image,image->columns,image->rows,MagickTrue, |
| 5141 | exception); |
| 5142 | if (spread_image == (Image *) NULL) |
| 5143 | return((Image *) NULL); |
| 5144 | if (SetImageStorageClass(spread_image,DirectClass) == MagickFalse) |
| 5145 | { |
| 5146 | InheritException(exception,&spread_image->exception); |
| 5147 | spread_image=DestroyImage(spread_image); |
| 5148 | return((Image *) NULL); |
| 5149 | } |
| 5150 | /* |
| 5151 | Spread image. |
| 5152 | */ |
| 5153 | status=MagickTrue; |
| 5154 | progress=0; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 5155 | GetMagickPixelPacket(spread_image,&bias); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5156 | width=GetOptimalKernelWidth1D(radius,0.5); |
cristy | b2a11ae | 2010-02-22 00:53:36 +0000 | [diff] [blame] | 5157 | resample_filter=AcquireResampleFilterThreadSet(image, |
| 5158 | UndefinedVirtualPixelMethod,MagickTrue,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5159 | random_info=AcquireRandomInfoThreadSet(); |
| 5160 | image_view=AcquireCacheView(spread_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 5161 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 00f9537 | 2010-02-13 16:39:29 +0000 | [diff] [blame] | 5162 | #pragma omp parallel for schedule(static) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5163 | #endif |
| 5164 | for (y=0; y < (long) spread_image->rows; y++) |
| 5165 | { |
| 5166 | MagickPixelPacket |
| 5167 | pixel; |
| 5168 | |
| 5169 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5170 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5171 | |
| 5172 | register long |
| 5173 | id, |
| 5174 | x; |
| 5175 | |
| 5176 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5177 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5178 | |
| 5179 | if (status == MagickFalse) |
| 5180 | continue; |
| 5181 | q=QueueCacheViewAuthenticPixels(image_view,0,y,spread_image->columns,1, |
| 5182 | exception); |
| 5183 | if (q == (PixelPacket *) NULL) |
| 5184 | { |
| 5185 | status=MagickFalse; |
| 5186 | continue; |
| 5187 | } |
| 5188 | indexes=GetCacheViewAuthenticIndexQueue(image_view); |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 5189 | pixel=bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5190 | id=GetOpenMPThreadId(); |
| 5191 | for (x=0; x < (long) spread_image->columns; x++) |
| 5192 | { |
| 5193 | (void) ResamplePixelColor(resample_filter[id],(double) x+width* |
| 5194 | (GetPseudoRandomValue(random_info[id])-0.5),(double) y+width* |
| 5195 | (GetPseudoRandomValue(random_info[id])-0.5),&pixel); |
| 5196 | SetPixelPacket(spread_image,&pixel,q,indexes+x); |
| 5197 | q++; |
| 5198 | } |
| 5199 | if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse) |
| 5200 | status=MagickFalse; |
| 5201 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 5202 | { |
| 5203 | MagickBooleanType |
| 5204 | proceed; |
| 5205 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 5206 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5207 | #pragma omp critical (MagickCore_SpreadImage) |
| 5208 | #endif |
| 5209 | proceed=SetImageProgress(image,SpreadImageTag,progress++,image->rows); |
| 5210 | if (proceed == MagickFalse) |
| 5211 | status=MagickFalse; |
| 5212 | } |
| 5213 | } |
| 5214 | image_view=DestroyCacheView(image_view); |
| 5215 | random_info=DestroyRandomInfoThreadSet(random_info); |
| 5216 | resample_filter=DestroyResampleFilterThreadSet(resample_filter); |
| 5217 | return(spread_image); |
| 5218 | } |
| 5219 | |
| 5220 | /* |
| 5221 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5222 | % % |
| 5223 | % % |
| 5224 | % % |
| 5225 | % U n s h a r p M a s k I m a g e % |
| 5226 | % % |
| 5227 | % % |
| 5228 | % % |
| 5229 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 5230 | % |
| 5231 | % UnsharpMaskImage() sharpens one or more image channels. We convolve the |
| 5232 | % image with a Gaussian operator of the given radius and standard deviation |
| 5233 | % (sigma). For reasonable results, radius should be larger than sigma. Use a |
| 5234 | % radius of 0 and UnsharpMaskImage() selects a suitable radius for you. |
| 5235 | % |
| 5236 | % The format of the UnsharpMaskImage method is: |
| 5237 | % |
| 5238 | % Image *UnsharpMaskImage(const Image *image,const double radius, |
| 5239 | % const double sigma,const double amount,const double threshold, |
| 5240 | % ExceptionInfo *exception) |
| 5241 | % Image *UnsharpMaskImageChannel(const Image *image, |
| 5242 | % const ChannelType channel,const double radius,const double sigma, |
| 5243 | % const double amount,const double threshold,ExceptionInfo *exception) |
| 5244 | % |
| 5245 | % A description of each parameter follows: |
| 5246 | % |
| 5247 | % o image: the image. |
| 5248 | % |
| 5249 | % o channel: the channel type. |
| 5250 | % |
| 5251 | % o radius: the radius of the Gaussian, in pixels, not counting the center |
| 5252 | % pixel. |
| 5253 | % |
| 5254 | % o sigma: the standard deviation of the Gaussian, in pixels. |
| 5255 | % |
| 5256 | % o amount: the percentage of the difference between the original and the |
| 5257 | % blur image that is added back into the original. |
| 5258 | % |
| 5259 | % o threshold: the threshold in pixels needed to apply the diffence amount. |
| 5260 | % |
| 5261 | % o exception: return any errors or warnings in this structure. |
| 5262 | % |
| 5263 | */ |
| 5264 | |
| 5265 | MagickExport Image *UnsharpMaskImage(const Image *image,const double radius, |
| 5266 | const double sigma,const double amount,const double threshold, |
| 5267 | ExceptionInfo *exception) |
| 5268 | { |
| 5269 | Image |
| 5270 | *sharp_image; |
| 5271 | |
| 5272 | sharp_image=UnsharpMaskImageChannel(image,DefaultChannels,radius,sigma,amount, |
| 5273 | threshold,exception); |
| 5274 | return(sharp_image); |
| 5275 | } |
| 5276 | |
| 5277 | MagickExport Image *UnsharpMaskImageChannel(const Image *image, |
| 5278 | const ChannelType channel,const double radius,const double sigma, |
| 5279 | const double amount,const double threshold,ExceptionInfo *exception) |
| 5280 | { |
| 5281 | #define SharpenImageTag "Sharpen/Image" |
| 5282 | |
cristy | c4c8d13 | 2010-01-07 01:58:38 +0000 | [diff] [blame] | 5283 | CacheView |
| 5284 | *image_view, |
| 5285 | *unsharp_view; |
| 5286 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5287 | Image |
| 5288 | *unsharp_image; |
| 5289 | |
| 5290 | long |
| 5291 | progress, |
| 5292 | y; |
| 5293 | |
| 5294 | MagickBooleanType |
| 5295 | status; |
| 5296 | |
| 5297 | MagickPixelPacket |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 5298 | bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5299 | |
| 5300 | MagickRealType |
| 5301 | quantum_threshold; |
| 5302 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5303 | assert(image != (const Image *) NULL); |
| 5304 | assert(image->signature == MagickSignature); |
| 5305 | if (image->debug != MagickFalse) |
| 5306 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 5307 | assert(exception != (ExceptionInfo *) NULL); |
| 5308 | unsharp_image=BlurImageChannel(image,channel,radius,sigma,exception); |
| 5309 | if (unsharp_image == (Image *) NULL) |
| 5310 | return((Image *) NULL); |
| 5311 | quantum_threshold=(MagickRealType) QuantumRange*threshold; |
| 5312 | /* |
| 5313 | Unsharp-mask image. |
| 5314 | */ |
| 5315 | status=MagickTrue; |
| 5316 | progress=0; |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 5317 | GetMagickPixelPacket(image,&bias); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5318 | image_view=AcquireCacheView(image); |
| 5319 | unsharp_view=AcquireCacheView(unsharp_image); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 5320 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 5321 | #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5322 | #endif |
| 5323 | for (y=0; y < (long) image->rows; y++) |
| 5324 | { |
| 5325 | MagickPixelPacket |
| 5326 | pixel; |
| 5327 | |
| 5328 | register const IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5329 | *restrict indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5330 | |
| 5331 | register const PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5332 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5333 | |
| 5334 | register IndexPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5335 | *restrict unsharp_indexes; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5336 | |
| 5337 | register long |
| 5338 | x; |
| 5339 | |
| 5340 | register PixelPacket |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 5341 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5342 | |
| 5343 | if (status == MagickFalse) |
| 5344 | continue; |
| 5345 | p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception); |
| 5346 | q=GetCacheViewAuthenticPixels(unsharp_view,0,y,unsharp_image->columns,1, |
| 5347 | exception); |
| 5348 | if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| 5349 | { |
| 5350 | status=MagickFalse; |
| 5351 | continue; |
| 5352 | } |
| 5353 | indexes=GetCacheViewVirtualIndexQueue(image_view); |
| 5354 | unsharp_indexes=GetCacheViewAuthenticIndexQueue(unsharp_view); |
cristy | ddd8220 | 2009-11-03 20:14:50 +0000 | [diff] [blame] | 5355 | pixel=bias; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5356 | for (x=0; x < (long) image->columns; x++) |
| 5357 | { |
| 5358 | if ((channel & RedChannel) != 0) |
| 5359 | { |
| 5360 | pixel.red=p->red-(MagickRealType) q->red; |
| 5361 | if (fabs(2.0*pixel.red) < quantum_threshold) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 5362 | pixel.red=(MagickRealType) GetRedPixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5363 | else |
| 5364 | pixel.red=(MagickRealType) p->red+(pixel.red*amount); |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 5365 | SetRedPixelComponent(q,ClampRedPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5366 | } |
| 5367 | if ((channel & GreenChannel) != 0) |
| 5368 | { |
| 5369 | pixel.green=p->green-(MagickRealType) q->green; |
| 5370 | if (fabs(2.0*pixel.green) < quantum_threshold) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 5371 | pixel.green=(MagickRealType) GetGreenPixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5372 | else |
| 5373 | pixel.green=(MagickRealType) p->green+(pixel.green*amount); |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 5374 | SetGreenPixelComponent(q,ClampGreenPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5375 | } |
| 5376 | if ((channel & BlueChannel) != 0) |
| 5377 | { |
| 5378 | pixel.blue=p->blue-(MagickRealType) q->blue; |
| 5379 | if (fabs(2.0*pixel.blue) < quantum_threshold) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 5380 | pixel.blue=(MagickRealType) GetBluePixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5381 | else |
| 5382 | pixel.blue=(MagickRealType) p->blue+(pixel.blue*amount); |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 5383 | SetBluePixelComponent(q,ClampBluePixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5384 | } |
| 5385 | if ((channel & OpacityChannel) != 0) |
| 5386 | { |
| 5387 | pixel.opacity=p->opacity-(MagickRealType) q->opacity; |
| 5388 | if (fabs(2.0*pixel.opacity) < quantum_threshold) |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 5389 | pixel.opacity=(MagickRealType) GetOpacityPixelComponent(p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5390 | else |
| 5391 | pixel.opacity=p->opacity+(pixel.opacity*amount); |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 5392 | SetOpacityPixelComponent(q,ClampOpacityPixelComponent(&pixel)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5393 | } |
| 5394 | if (((channel & IndexChannel) != 0) && |
| 5395 | (image->colorspace == CMYKColorspace)) |
| 5396 | { |
| 5397 | pixel.index=unsharp_indexes[x]-(MagickRealType) indexes[x]; |
| 5398 | if (fabs(2.0*pixel.index) < quantum_threshold) |
| 5399 | pixel.index=(MagickRealType) unsharp_indexes[x]; |
| 5400 | else |
| 5401 | pixel.index=(MagickRealType) unsharp_indexes[x]+(pixel.index* |
| 5402 | amount); |
cristy | ce70c17 | 2010-01-07 17:15:30 +0000 | [diff] [blame] | 5403 | unsharp_indexes[x]=ClampToQuantum(pixel.index); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5404 | } |
| 5405 | p++; |
| 5406 | q++; |
| 5407 | } |
| 5408 | if (SyncCacheViewAuthenticPixels(unsharp_view,exception) == MagickFalse) |
| 5409 | status=MagickFalse; |
| 5410 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 5411 | { |
| 5412 | MagickBooleanType |
| 5413 | proceed; |
| 5414 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 5415 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 5416 | #pragma omp critical (MagickCore_UnsharpMaskImageChannel) |
| 5417 | #endif |
| 5418 | proceed=SetImageProgress(image,SharpenImageTag,progress++,image->rows); |
| 5419 | if (proceed == MagickFalse) |
| 5420 | status=MagickFalse; |
| 5421 | } |
| 5422 | } |
| 5423 | unsharp_image->type=image->type; |
| 5424 | unsharp_view=DestroyCacheView(unsharp_view); |
| 5425 | image_view=DestroyCacheView(image_view); |
| 5426 | if (status == MagickFalse) |
| 5427 | unsharp_image=DestroyImage(unsharp_image); |
| 5428 | return(unsharp_image); |
| 5429 | } |