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187<div class="main">
188
cristy307ba182010-12-25 01:00:34 +0000[diff] [blame]189<h1>Module fx
190 Methods</h1>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]191<p class="navigation-index">[<a href="#AddNoiseImage">AddNoiseImage</a> &bull; <a href="#BlueShiftImage">BlueShiftImage</a> &bull; <a href="#CharcoalImage">CharcoalImage</a> &bull; <a href="#ColorizeImage">ColorizeImage</a> &bull; <a href="#ColorMatrixImage">ColorMatrixImage</a> &bull; <a href="#FxImage">FxImage</a> &bull; <a href="#ImplodeImage">ImplodeImage</a> &bull; <a href="#The MorphImages">The MorphImages</a> &bull; <a href="#PlasmaImage">PlasmaImage</a> &bull; <a href="#PolaroidImage">PolaroidImage</a> &bull; <a href="#MagickSepiaToneImage">MagickSepiaToneImage</a> &bull; <a href="#ShadowImage">ShadowImage</a> &bull; <a href="#SketchImage">SketchImage</a> &bull; <a href="#SolarizeImage">SolarizeImage</a> &bull; <a href="#SteganoImage">SteganoImage</a> &bull; <a href="#StereoAnaglyphImage">StereoAnaglyphImage</a> &bull; <a href="#SwirlImage">SwirlImage</a> &bull; <a href="#TintImage">TintImage</a> &bull; <a href="#VignetteImage">VignetteImage</a> &bull; <a href="#WaveImage">WaveImage</a>]</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]192
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]193<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
194_8c.html" id="AddNoiseImage">AddNoiseImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]195<div class="doc-section">
196
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]197<p>AddNoiseImage() adds random noise to the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]198
199<p>The format of the AddNoiseImage method is:</p>
200
201<pre class="code">
202 Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
203 ExceptionInfo *exception)
204 Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
205 const NoiseType noise_type,ExceptionInfo *exception)
206</pre>
207
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]208<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]209
210<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]211<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]212
213<h5>channel</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]214<p>the channel type.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]215
216<h5>noise_type</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]217<p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]218
219<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]220<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]221
222 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]223<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
224_8c.html" id="BlueShiftImage">BlueShiftImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]225<div class="doc-section">
226
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]227<p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]228
229<p>The format of the BlueShiftImage method is:</p>
230
231<pre class="code">
232 Image *BlueShiftImage(const Image *image,const double factor,
233 ExceptionInfo *exception)
234</pre>
235
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]236<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]237
238<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]239<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]240
241<h5>factor</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]242<p>the shift factor.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]243
244<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]245<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]246
247 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]248<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
249_8c.html" id="CharcoalImage">CharcoalImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]250<div class="doc-section">
251
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]252<p>CharcoalImage() creates a new image that is a copy of an existing one with the edge highlighted. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]253
254<p>The format of the CharcoalImage method is:</p>
255
256<pre class="code">
257 Image *CharcoalImage(const Image *image,const double radius,
258 const double sigma,ExceptionInfo *exception)
259</pre>
260
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]261<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]262
263<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]264<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]265
266<h5>radius</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]267<p>the radius of the pixel neighborhood.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]268
269<h5>sigma</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]270<p>the standard deviation of the Gaussian, in pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]271
272<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]273<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]274
275 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]276<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
277_8c.html" id="ColorizeImage">ColorizeImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]278<div class="doc-section">
279
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]280<p>ColorizeImage() blends the fill color with each pixel in the image. A percentage blend is specified with opacity. Control the application of different color components by specifying a different percentage for each component (e.g. 90/100/10 is 90 red, 100 green, and 10 blue).</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]281
282<p>The format of the ColorizeImage method is:</p>
283
284<pre class="code">
285 Image *ColorizeImage(const Image *image,const char *opacity,
286 const PixelPacket colorize,ExceptionInfo *exception)
287</pre>
288
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]289<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]290
291<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]292<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]293
294<h5>opacity</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]295<p>A character string indicating the level of opacity as a percentage.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]296
297<h5>colorize</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]298<p>A color value.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]299
300<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]301<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]302
303 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]304<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
305_8c.html" id="ColorMatrixImage">ColorMatrixImage</a></h2>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]306<div class="doc-section">
307
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]308<p>ColorMatrixImage() applies color transformation to an image. This method permits saturation changes, hue rotation, luminance to alpha, and various other effects. Although variable-sized transformation matrices can be used, typically one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA (or RGBA with offsets). The matrix is similar to those used by Adobe Flash except offsets are in column 6 rather than 5 (in support of CMYKA images) and offsets are normalized (divide Flash offset by 255).</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]309
310<p>The format of the ColorMatrixImage method is:</p>
311
312<pre class="code">
313 Image *ColorMatrixImage(const Image *image,
314 const KernelInfo *color_matrix,ExceptionInfo *exception)
315</pre>
316
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]317<p>A description of each parameter follows:</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]318
319<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]320<p>the image.</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]321
322<h5>color_matrix</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]323<p>the color matrix.</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]324
325<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]326<p>return any errors or warnings in this structure.</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]327
328 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]329<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
330_8c.html" id="FxImage">FxImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]331<div class="doc-section">
332
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]333<p>FxImage() applies a mathematical expression to the specified image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]334
335<p>The format of the FxImage method is:</p>
336
337<pre class="code">
338 Image *FxImage(const Image *image,const char *expression,
339 ExceptionInfo *exception)
340 Image *FxImageChannel(const Image *image,const ChannelType channel,
341 const char *expression,ExceptionInfo *exception)
342</pre>
343
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]344<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]345
346<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]347<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]348
349<h5>channel</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]350<p>the channel.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]351
352<h5>expression</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]353<p>A mathematical expression.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]354
355<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]356<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]357
358 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]359<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
360_8c.html" id="ImplodeImage">ImplodeImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]361<div class="doc-section">
362
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]363<p>ImplodeImage() creates a new image that is a copy of an existing one with the image pixels "implode" by the specified percentage. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]364
365<p>The format of the ImplodeImage method is:</p>
366
367<pre class="code">
368 Image *ImplodeImage(const Image *image,const double amount,
369 ExceptionInfo *exception)
370</pre>
371
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]372<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]373
374<h5>implode_image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]375<p>Method ImplodeImage returns a pointer to the image after it is implode. A null image is returned if there is a memory shortage.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]376
377<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]378<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]379
380<h5>amount</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]381<p>Define the extent of the implosion.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]382
383<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]384<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]385
386 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]387<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
388_8c.html" id="The_MorphImages">The MorphImages</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]389<div class="doc-section">
390
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]391<p>The MorphImages() method requires a minimum of two images. The first image is transformed into the second by a number of intervening images as specified by frames.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]392
393<p>The format of the MorphImage method is:</p>
394
395<pre class="code">
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]396 Image *MorphImages(const Image *image,const size_t number_frames,
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]397 ExceptionInfo *exception)
398</pre>
399
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]400<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]401
402<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]403<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]404
405<h5>number_frames</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]406<p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]407
408<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]409<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]410
411 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]412<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
413_8c.html" id="PlasmaImage">PlasmaImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]414<div class="doc-section">
415
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]416<p>PlasmaImage() initializes an image with plasma fractal values. The image must be initialized with a base color and the random number generator seeded before this method is called.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]417
418<p>The format of the PlasmaImage method is:</p>
419
420<pre class="code">
421 MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]422 size_t attenuate,size_t depth)
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]423</pre>
424
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]425<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]426
427<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]428<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]429
430<h5>segment</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]431<p> Define the region to apply plasma fractals values.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]432
433<h5>attenuate</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]434<p>Define the plasma attenuation factor.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]435
436<h5>depth</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]437<p>Limit the plasma recursion depth.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]438
439 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]440<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
441_8c.html" id="PolaroidImage">PolaroidImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]442<div class="doc-section">
443
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]444<p>PolaroidImage() simulates a Polaroid picture.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]445
446<p>The format of the AnnotateImage method is:</p>
447
448<pre class="code">
449 Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
450 const double angle,ExceptionInfo exception)
451</pre>
452
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]453<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]454
455<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]456<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]457
458<h5>draw_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]459<p>the draw info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]460
461<h5>angle</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]462<p>Apply the effect along this angle.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]463
464<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]465<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]466
467 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]468<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
469_8c.html" id="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]470<div class="doc-section">
471
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]472<p>MagickSepiaToneImage() applies a special effect to the image, similar to the effect achieved in a photo darkroom by sepia toning. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the sepia toning. A threshold of 80 is a good starting point for a reasonable tone.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]473
474<p>The format of the SepiaToneImage method is:</p>
475
476<pre class="code">
477 Image *SepiaToneImage(const Image *image,const double threshold,
478 ExceptionInfo *exception)
479</pre>
480
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]481<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]482
483<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]484<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]485
486<h5>threshold</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]487<p>the tone threshold.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]488
489<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]490<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]491
492 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]493<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
494_8c.html" id="ShadowImage">ShadowImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]495<div class="doc-section">
496
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]497<p>ShadowImage() simulates a shadow from the specified image and returns it.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]498
499<p>The format of the ShadowImage method is:</p>
500
501<pre class="code">
502 Image *ShadowImage(const Image *image,const double opacity,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]503 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]504 ExceptionInfo *exception)
505</pre>
506
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]507<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]508
509<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]510<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]511
512<h5>opacity</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]513<p>percentage transparency.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]514
515<h5>sigma</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]516<p>the standard deviation of the Gaussian, in pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]517
518<h5>x_offset</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]519<p>the shadow x-offset.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]520
521<h5>y_offset</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]522<p>the shadow y-offset.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]523
524<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]525<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]526
527 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]528<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
529_8c.html" id="SketchImage">SketchImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]530<div class="doc-section">
531
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]532<p>SketchImage() simulates a pencil sketch. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and SketchImage() selects a suitable radius for you. Angle gives the angle of the sketch.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]533
534<p>The format of the SketchImage method is:</p>
535
536<pre class="code">
537 Image *SketchImage(const Image *image,const double radius,
538 const double sigma,const double angle,ExceptionInfo *exception)
539</pre>
540
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]541<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]542
543<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]544<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]545
546<h5>radius</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]547<p>the radius of the Gaussian, in pixels, not counting the center pixel.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]548
549<h5>sigma</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]550<p>the standard deviation of the Gaussian, in pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]551
552<h5>angle</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]553<p>Apply the effect along this angle.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]554
555<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]556<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]557
558 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]559<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
560_8c.html" id="SolarizeImage">SolarizeImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]561<div class="doc-section">
562
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]563<p>SolarizeImage() applies a special effect to the image, similar to the effect achieved in a photo darkroom by selectively exposing areas of photo sensitive paper to light. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the solarization.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]564
565<p>The format of the SolarizeImage method is:</p>
566
567<pre class="code">
568 MagickBooleanType SolarizeImage(Image *image,const double threshold)
569</pre>
570
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]571<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]572
573<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]574<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]575
576<h5>threshold</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]577<p>Define the extent of the solarization.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]578
579 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]580<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
581_8c.html" id="SteganoImage">SteganoImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]582<div class="doc-section">
583
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]584<p>SteganoImage() hides a digital watermark within the image. Recover the hidden watermark later to prove that the authenticity of an image. Offset defines the start position within the image to hide the watermark.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]585
586<p>The format of the SteganoImage method is:</p>
587
588<pre class="code">
589 Image *SteganoImage(const Image *image,Image *watermark,
590 ExceptionInfo *exception)
591</pre>
592
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]593<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]594
595<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]596<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]597
598<h5>watermark</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]599<p>the watermark image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]600
601<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]602<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]603
604 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]605<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
606_8c.html" id="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]607<div class="doc-section">
608
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]609<p>StereoAnaglyphImage() combines two images and produces a single image that is the composite of a left and right image of a stereo pair. Special red-green stereo glasses are required to view this effect.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]610
611<p>The format of the StereoAnaglyphImage method is:</p>
612
613<pre class="code">
614 Image *StereoImage(const Image *left_image,const Image *right_image,
615 ExceptionInfo *exception)
616 Image *StereoAnaglyphImage(const Image *left_image,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]617 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]618 ExceptionInfo *exception)
619</pre>
620
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]621<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]622
623<h5>left_image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]624<p>the left image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]625
626<h5>right_image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]627<p>the right image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]628
629<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]630<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]631
632<h5>x_offset</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]633<p>amount, in pixels, by which the left image is offset to the right of the right image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]634
635<h5>y_offset</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]636<p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]637
638
639 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]640<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
641_8c.html" id="SwirlImage">SwirlImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]642<div class="doc-section">
643
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]644<p>SwirlImage() swirls the pixels about the center of the image, where degrees indicates the sweep of the arc through which each pixel is moved. You get a more dramatic effect as the degrees move from 1 to 360.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]645
646<p>The format of the SwirlImage method is:</p>
647
648<pre class="code">
649 Image *SwirlImage(const Image *image,double degrees,
650 ExceptionInfo *exception)
651</pre>
652
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]653<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]654
655<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]656<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]657
658<h5>degrees</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]659<p>Define the tightness of the swirling effect.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]660
661<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]662<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]663
664 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]665<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
666_8c.html" id="TintImage">TintImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]667<div class="doc-section">
668
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]669<p>TintImage() applies a color vector to each pixel in the image. The length of the vector is 0 for black and white and at its maximum for the midtones. The vector weighting function is f(x)=(1-(4.0*((x-0.5)*(x-0.5))))</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]670
671<p>The format of the TintImage method is:</p>
672
673<pre class="code">
674 Image *TintImage(const Image *image,const char *opacity,
675 const PixelPacket tint,ExceptionInfo *exception)
676</pre>
677
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]678<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]679
680<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]681<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]682
683<h5>opacity</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]684<p>A color value used for tinting.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]685
686<h5>tint</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]687<p>A color value used for tinting.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]688
689<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]690<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]691
692 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]693<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
694_8c.html" id="VignetteImage">VignetteImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]695<div class="doc-section">
696
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]697<p>VignetteImage() softens the edges of the image in vignette style.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]698
699<p>The format of the VignetteImage method is:</p>
700
701<pre class="code">
702 Image *VignetteImage(const Image *image,const double radius,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]703 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]704</pre>
705
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]706<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]707
708<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]709<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]710
711<h5>radius</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]712<p>the radius of the pixel neighborhood.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]713
714<h5>sigma</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]715<p>the standard deviation of the Gaussian, in pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]716
717<h5>x, y</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]718<p>Define the x and y ellipse offset.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]719
720<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]721<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]722
723 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]724<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
725_8c.html" id="WaveImage">WaveImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]726<div class="doc-section">
727
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]728<p>WaveImage() creates a "ripple" effect in the image by shifting the pixels vertically along a sine wave whose amplitude and wavelength is specified by the given parameters.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]729
730<p>The format of the WaveImage method is:</p>
731
732<pre class="code">
733 Image *WaveImage(const Image *image,const double amplitude,
734 const double wave_length,ExceptionInfo *exception)
735</pre>
736
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]737<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]738
739<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]740<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]741
742<h5>amplitude, wave_length</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]743<p>Define the amplitude and wave length of the sine wave.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]744
745<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]746<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]747
748 </div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]749
750</div>
751
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