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167
168<div class="main">
169
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]170<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]171
172<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
173_8c.html" target="source" name="AddNoiseImage">AddNoiseImage</a></h2>
174<div class="doc-section">
175
176<p>AddNoiseImage() adds random noise to the image.</p></ol>
177
178<p>The format of the AddNoiseImage method is:</p>
179
180<pre class="code">
181 Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
182 ExceptionInfo *exception)
183 Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
184 const NoiseType noise_type,ExceptionInfo *exception)
185</pre>
186
187<p>A description of each parameter follows:</p></ol>
188
189<h5>image</h5>
190<ol><p>the image.</p></ol>
191
192<h5>channel</h5>
193<ol><p>the channel type.</p></ol>
194
195<h5>noise_type</h5>
196<ol><p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p></ol>
197
198<h5>exception</h5>
199<ol><p>return any errors or warnings in this structure.</p></ol>
200
201 </div>
202<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
203_8c.html" target="source" name="BlueShiftImage">BlueShiftImage</a></h2>
204<div class="doc-section">
205
206<p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p></ol>
207
208<p>The format of the BlueShiftImage method is:</p>
209
210<pre class="code">
211 Image *BlueShiftImage(const Image *image,const double factor,
212 ExceptionInfo *exception)
213</pre>
214
215<p>A description of each parameter follows:</p></ol>
216
217<h5>image</h5>
218<ol><p>the image.</p></ol>
219
220<h5>factor</h5>
221<ol><p>the shift factor.</p></ol>
222
223<h5>exception</h5>
224<ol><p>return any errors or warnings in this structure.</p></ol>
225
226 </div>
227<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
228_8c.html" target="source" name="CharcoalImage">CharcoalImage</a></h2>
229<div class="doc-section">
230
231<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></ol>
232
233<p>The format of the CharcoalImage method is:</p>
234
235<pre class="code">
236 Image *CharcoalImage(const Image *image,const double radius,
237 const double sigma,ExceptionInfo *exception)
238</pre>
239
240<p>A description of each parameter follows:</p></ol>
241
242<h5>image</h5>
243<ol><p>the image.</p></ol>
244
245<h5>radius</h5>
246<ol><p>the radius of the pixel neighborhood.</p></ol>
247
248<h5>sigma</h5>
249<ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
250
251<h5>exception</h5>
252<ol><p>return any errors or warnings in this structure.</p></ol>
253
254 </div>
255<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
256_8c.html" target="source" name="ColorizeImage">ColorizeImage</a></h2>
257<div class="doc-section">
258
259<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></ol>
260
261<p>The format of the ColorizeImage method is:</p>
262
263<pre class="code">
264 Image *ColorizeImage(const Image *image,const char *opacity,
265 const PixelPacket colorize,ExceptionInfo *exception)
266</pre>
267
268<p>A description of each parameter follows:</p></ol>
269
270<h5>image</h5>
271<ol><p>the image.</p></ol>
272
273<h5>opacity</h5>
274<ol><p>A character string indicating the level of opacity as a percentage.</p></ol>
275
276<h5>colorize</h5>
277<ol><p>A color value.</p></ol>
278
279<h5>exception</h5>
280<ol><p>return any errors or warnings in this structure.</p></ol>
281
282 </div>
283<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]284_8c.html" target="source" name="ColorMatrixImage">ColorMatrixImage</a></h2>
285<div class="doc-section">
286
287<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></ol>
288
289<p>The format of the ColorMatrixImage method is:</p>
290
291<pre class="code">
292 Image *ColorMatrixImage(const Image *image,
293 const KernelInfo *color_matrix,ExceptionInfo *exception)
294</pre>
295
296<p>A description of each parameter follows:</p></ol>
297
298<h5>image</h5>
299<ol><p>the image.</p></ol>
300
301<h5>color_matrix</h5>
302<ol><p>the color matrix.</p></ol>
303
304<h5>exception</h5>
305<ol><p>return any errors or warnings in this structure.</p></ol>
306
307 </div>
308<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]309_8c.html" target="source" name="FxImage">FxImage</a></h2>
310<div class="doc-section">
311
312<p>FxImage() applies a mathematical expression to the specified image.</p></ol>
313
314<p>The format of the FxImage method is:</p>
315
316<pre class="code">
317 Image *FxImage(const Image *image,const char *expression,
318 ExceptionInfo *exception)
319 Image *FxImageChannel(const Image *image,const ChannelType channel,
320 const char *expression,ExceptionInfo *exception)
321</pre>
322
323<p>A description of each parameter follows:</p></ol>
324
325<h5>image</h5>
326<ol><p>the image.</p></ol>
327
328<h5>channel</h5>
329<ol><p>the channel.</p></ol>
330
331<h5>expression</h5>
332<ol><p>A mathematical expression.</p></ol>
333
334<h5>exception</h5>
335<ol><p>return any errors or warnings in this structure.</p></ol>
336
337 </div>
338<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
339_8c.html" target="source" name="ImplodeImage">ImplodeImage</a></h2>
340<div class="doc-section">
341
342<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></ol>
343
344<p>The format of the ImplodeImage method is:</p>
345
346<pre class="code">
347 Image *ImplodeImage(const Image *image,const double amount,
348 ExceptionInfo *exception)
349</pre>
350
351<p>A description of each parameter follows:</p></ol>
352
353<h5>implode_image</h5>
354<ol><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></ol>
355
356<h5>image</h5>
357<ol><p>the image.</p></ol>
358
359<h5>amount</h5>
360<ol><p>Define the extent of the implosion.</p></ol>
361
362<h5>exception</h5>
363<ol><p>return any errors or warnings in this structure.</p></ol>
364
365 </div>
366<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
367_8c.html" target="source" name="The MorphImages">The MorphImages</a></h2>
368<div class="doc-section">
369
370<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></ol>
371
372<p>The format of the MorphImage method is:</p>
373
374<pre class="code">
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]375 Image *MorphImages(const Image *image,const size_t number_frames,
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]376 ExceptionInfo *exception)
377</pre>
378
379<p>A description of each parameter follows:</p></ol>
380
381<h5>image</h5>
382<ol><p>the image.</p></ol>
383
384<h5>number_frames</h5>
385<ol><p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p></ol>
386
387<h5>exception</h5>
388<ol><p>return any errors or warnings in this structure.</p></ol>
389
390 </div>
391<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
392_8c.html" target="source" name="PlasmaImage">PlasmaImage</a></h2>
393<div class="doc-section">
394
395<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></ol>
396
397<p>The format of the PlasmaImage method is:</p>
398
399<pre class="code">
400 MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]401 size_t attenuate,size_t depth)
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]402</pre>
403
404<p>A description of each parameter follows:</p></ol>
405
406<h5>image</h5>
407<ol><p>the image.</p></ol>
408
409<h5>segment</h5>
410<ol><p> Define the region to apply plasma fractals values.</p></ol>
411
412<h5>attenuate</h5>
cristy8030a5b2010-09-17 18:31:49 +0000[diff] [blame]413<ol><p>Define the plasma attenuation factor.</p></ol>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]414
415<h5>depth</h5>
416<ol><p>Limit the plasma recursion depth.</p></ol>
417
418 </div>
419<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
420_8c.html" target="source" name="PolaroidImage">PolaroidImage</a></h2>
421<div class="doc-section">
422
423<p>PolaroidImage() simulates a Polaroid picture.</p></ol>
424
425<p>The format of the AnnotateImage method is:</p>
426
427<pre class="code">
428 Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
429 const double angle,ExceptionInfo exception)
430</pre>
431
432<p>A description of each parameter follows:</p></ol>
433
434<h5>image</h5>
435<ol><p>the image.</p></ol>
436
437<h5>draw_info</h5>
438<ol><p>the draw info.</p></ol>
439
440<h5>angle</h5>
cristyeaedf062010-05-29 22:36:02 +0000[diff] [blame]441<ol><p>Apply the effect along this angle.</p></ol>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]442
443<h5>exception</h5>
444<ol><p>return any errors or warnings in this structure.</p></ol>
445
446 </div>
447<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]448_8c.html" target="source" name="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
449<div class="doc-section">
450
451<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></ol>
452
453<p>The format of the SepiaToneImage method is:</p>
454
455<pre class="code">
456 Image *SepiaToneImage(const Image *image,const double threshold,
457 ExceptionInfo *exception)
458</pre>
459
460<p>A description of each parameter follows:</p></ol>
461
462<h5>image</h5>
463<ol><p>the image.</p></ol>
464
465<h5>threshold</h5>
466<ol><p>the tone threshold.</p></ol>
467
468<h5>exception</h5>
469<ol><p>return any errors or warnings in this structure.</p></ol>
470
471 </div>
472<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
473_8c.html" target="source" name="ShadowImage">ShadowImage</a></h2>
474<div class="doc-section">
475
476<p>ShadowImage() simulates a shadow from the specified image and returns it.</p></ol>
477
478<p>The format of the ShadowImage method is:</p>
479
480<pre class="code">
481 Image *ShadowImage(const Image *image,const double opacity,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]482 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]483 ExceptionInfo *exception)
484</pre>
485
486<p>A description of each parameter follows:</p></ol>
487
488<h5>image</h5>
489<ol><p>the image.</p></ol>
490
491<h5>opacity</h5>
492<ol><p>percentage transparency.</p></ol>
493
494<h5>sigma</h5>
495<ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
496
497<h5>x_offset</h5>
498<ol><p>the shadow x-offset.</p></ol>
499
500<h5>y_offset</h5>
501<ol><p>the shadow y-offset.</p></ol>
502
503<h5>exception</h5>
504<ol><p>return any errors or warnings in this structure.</p></ol>
505
506 </div>
507<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
508_8c.html" target="source" name="SketchImage">SketchImage</a></h2>
509<div class="doc-section">
510
511<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></ol>
512
513<p>The format of the SketchImage method is:</p>
514
515<pre class="code">
516 Image *SketchImage(const Image *image,const double radius,
517 const double sigma,const double angle,ExceptionInfo *exception)
518</pre>
519
520<p>A description of each parameter follows:</p></ol>
521
522<h5>image</h5>
523<ol><p>the image.</p></ol>
524
525<h5>radius</h5>
526<ol><p>the radius of the Gaussian, in pixels, not counting the center pixel.</p></ol>
527
528<h5>sigma</h5>
529<ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
530
531<h5>angle</h5>
cristyeaedf062010-05-29 22:36:02 +0000[diff] [blame]532<ol><p>Apply the effect along this angle.</p></ol>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]533
534<h5>exception</h5>
535<ol><p>return any errors or warnings in this structure.</p></ol>
536
537 </div>
538<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
539_8c.html" target="source" name="SolarizeImage">SolarizeImage</a></h2>
540<div class="doc-section">
541
542<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></ol>
543
544<p>The format of the SolarizeImage method is:</p>
545
546<pre class="code">
547 MagickBooleanType SolarizeImage(Image *image,const double threshold)
548</pre>
549
550<p>A description of each parameter follows:</p></ol>
551
552<h5>image</h5>
553<ol><p>the image.</p></ol>
554
555<h5>threshold</h5>
556<ol><p>Define the extent of the solarization.</p></ol>
557
558 </div>
559<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
560_8c.html" target="source" name="SteganoImage">SteganoImage</a></h2>
561<div class="doc-section">
562
563<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></ol>
564
565<p>The format of the SteganoImage method is:</p>
566
567<pre class="code">
568 Image *SteganoImage(const Image *image,Image *watermark,
569 ExceptionInfo *exception)
570</pre>
571
572<p>A description of each parameter follows:</p></ol>
573
574<h5>image</h5>
575<ol><p>the image.</p></ol>
576
577<h5>watermark</h5>
578<ol><p>the watermark image.</p></ol>
579
580<h5>exception</h5>
581<ol><p>return any errors or warnings in this structure.</p></ol>
582
583 </div>
584<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
585_8c.html" target="source" name="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
586<div class="doc-section">
587
588<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></ol>
589
590<p>The format of the StereoAnaglyphImage method is:</p>
591
592<pre class="code">
593 Image *StereoImage(const Image *left_image,const Image *right_image,
594 ExceptionInfo *exception)
595 Image *StereoAnaglyphImage(const Image *left_image,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]596 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]597 ExceptionInfo *exception)
598</pre>
599
600<p>A description of each parameter follows:</p></ol>
601
602<h5>left_image</h5>
603<ol><p>the left image.</p></ol>
604
605<h5>right_image</h5>
606<ol><p>the right image.</p></ol>
607
608<h5>exception</h5>
609<ol><p>return any errors or warnings in this structure.</p></ol>
610
611<h5>x_offset</h5>
612<ol><p>amount, in pixels, by which the left image is offset to the right of the right image.</p></ol>
613
614<h5>y_offset</h5>
615<ol><p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p></ol>
616
617
618 </div>
619<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
620_8c.html" target="source" name="SwirlImage">SwirlImage</a></h2>
621<div class="doc-section">
622
623<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></ol>
624
625<p>The format of the SwirlImage method is:</p>
626
627<pre class="code">
628 Image *SwirlImage(const Image *image,double degrees,
629 ExceptionInfo *exception)
630</pre>
631
632<p>A description of each parameter follows:</p></ol>
633
634<h5>image</h5>
635<ol><p>the image.</p></ol>
636
637<h5>degrees</h5>
638<ol><p>Define the tightness of the swirling effect.</p></ol>
639
640<h5>exception</h5>
641<ol><p>return any errors or warnings in this structure.</p></ol>
642
643 </div>
644<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
645_8c.html" target="source" name="TintImage">TintImage</a></h2>
646<div class="doc-section">
647
648<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></ol>
649
650<p>The format of the TintImage method is:</p>
651
652<pre class="code">
653 Image *TintImage(const Image *image,const char *opacity,
654 const PixelPacket tint,ExceptionInfo *exception)
655</pre>
656
657<p>A description of each parameter follows:</p></ol>
658
659<h5>image</h5>
660<ol><p>the image.</p></ol>
661
662<h5>opacity</h5>
663<ol><p>A color value used for tinting.</p></ol>
664
665<h5>tint</h5>
666<ol><p>A color value used for tinting.</p></ol>
667
668<h5>exception</h5>
669<ol><p>return any errors or warnings in this structure.</p></ol>
670
671 </div>
672<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
673_8c.html" target="source" name="VignetteImage">VignetteImage</a></h2>
674<div class="doc-section">
675
676<p>VignetteImage() softens the edges of the image in vignette style.</p></ol>
677
678<p>The format of the VignetteImage method is:</p>
679
680<pre class="code">
681 Image *VignetteImage(const Image *image,const double radius,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]682 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]683</pre>
684
685<p>A description of each parameter follows:</p></ol>
686
687<h5>image</h5>
688<ol><p>the image.</p></ol>
689
690<h5>radius</h5>
691<ol><p>the radius of the pixel neighborhood.</p></ol>
692
693<h5>sigma</h5>
694<ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
695
696<h5>x, y</h5>
697<ol><p>Define the x and y ellipse offset.</p></ol>
698
699<h5>exception</h5>
700<ol><p>return any errors or warnings in this structure.</p></ol>
701
702 </div>
703<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
704_8c.html" target="source" name="WaveImage">WaveImage</a></h2>
705<div class="doc-section">
706
cristyeaedf062010-05-29 22:36:02 +0000[diff] [blame]707<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></ol>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]708
709<p>The format of the WaveImage method is:</p>
710
711<pre class="code">
712 Image *WaveImage(const Image *image,const double amplitude,
713 const double wave_length,ExceptionInfo *exception)
714</pre>
715
716<p>A description of each parameter follows:</p></ol>
717
718<h5>image</h5>
719<ol><p>the image.</p></ol>
720
721<h5>amplitude, wave_length</h5>
722<ol><p>Define the amplitude and wave length of the sine wave.</p></ol>
723
724<h5>exception</h5>
725<ol><p>return any errors or warnings in this structure.</p></ol>
726
727 </div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]728
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730
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