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172 <p class="navigation-index">[<a href="#AddNoiseImage">AddNoiseImage</a> • <a href="#BlueShiftImage">BlueShiftImage</a> • <a href="#CharcoalImage">CharcoalImage</a> • <a href="#ColorizeImage">ColorizeImage</a> • <a href="#ColorMatrixImage">ColorMatrixImage</a> • <a href="#FxImage">FxImage</a> • <a href="#ImplodeImage">ImplodeImage</a> • <a href="#The MorphImages">The MorphImages</a> • <a href="#PlasmaImage">PlasmaImage</a> • <a href="#PolaroidImage">PolaroidImage</a> • <a href="#MagickSepiaToneImage">MagickSepiaToneImage</a> • <a href="#ShadowImage">ShadowImage</a> • <a href="#SketchImage">SketchImage</a> • <a href="#SolarizeImage">SolarizeImage</a> • <a href="#SteganoImage">SteganoImage</a> • <a href="#StereoAnaglyphImage">StereoAnaglyphImage</a> • <a href="#SwirlImage">SwirlImage</a> • <a href="#TintImage">TintImage</a> • <a href="#VignetteImage">VignetteImage</a> • <a href="#WaveImage">WaveImage</a>]</p>
174 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
175 _8c.html" target="source" name="AddNoiseImage">AddNoiseImage</a></h2>
176 <div class="doc-section">
178 <p>AddNoiseImage() adds random noise to the image.</p></ol>
180 <p>The format of the AddNoiseImage method is:</p>
183 Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
184 ExceptionInfo *exception)
185 Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
186 const NoiseType noise_type,ExceptionInfo *exception)
189 <p>A description of each parameter follows:</p></ol>
192 <ol><p>the image.</p></ol>
195 <ol><p>the channel type.</p></ol>
198 <ol><p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p></ol>
201 <ol><p>return any errors or warnings in this structure.</p></ol>
204 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
205 _8c.html" target="source" name="BlueShiftImage">BlueShiftImage</a></h2>
206 <div class="doc-section">
208 <p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p></ol>
210 <p>The format of the BlueShiftImage method is:</p>
213 Image *BlueShiftImage(const Image *image,const double factor,
214 ExceptionInfo *exception)
217 <p>A description of each parameter follows:</p></ol>
220 <ol><p>the image.</p></ol>
223 <ol><p>the shift factor.</p></ol>
226 <ol><p>return any errors or warnings in this structure.</p></ol>
229 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
230 _8c.html" target="source" name="CharcoalImage">CharcoalImage</a></h2>
231 <div class="doc-section">
233 <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>
235 <p>The format of the CharcoalImage method is:</p>
238 Image *CharcoalImage(const Image *image,const double radius,
239 const double sigma,ExceptionInfo *exception)
242 <p>A description of each parameter follows:</p></ol>
245 <ol><p>the image.</p></ol>
248 <ol><p>the radius of the pixel neighborhood.</p></ol>
251 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
254 <ol><p>return any errors or warnings in this structure.</p></ol>
257 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
258 _8c.html" target="source" name="ColorizeImage">ColorizeImage</a></h2>
259 <div class="doc-section">
261 <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>
263 <p>The format of the ColorizeImage method is:</p>
266 Image *ColorizeImage(const Image *image,const char *opacity,
267 const PixelPacket colorize,ExceptionInfo *exception)
270 <p>A description of each parameter follows:</p></ol>
273 <ol><p>the image.</p></ol>
276 <ol><p>A character string indicating the level of opacity as a percentage.</p></ol>
279 <ol><p>A color value.</p></ol>
282 <ol><p>return any errors or warnings in this structure.</p></ol>
285 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
286 _8c.html" target="source" name="ColorMatrixImage">ColorMatrixImage</a></h2>
287 <div class="doc-section">
289 <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>
291 <p>The format of the ColorMatrixImage method is:</p>
294 Image *ColorMatrixImage(const Image *image,
295 const KernelInfo *color_matrix,ExceptionInfo *exception)
298 <p>A description of each parameter follows:</p></ol>
301 <ol><p>the image.</p></ol>
303 <h5>color_matrix</h5>
304 <ol><p>the color matrix.</p></ol>
307 <ol><p>return any errors or warnings in this structure.</p></ol>
310 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
311 _8c.html" target="source" name="FxImage">FxImage</a></h2>
312 <div class="doc-section">
314 <p>FxImage() applies a mathematical expression to the specified image.</p></ol>
316 <p>The format of the FxImage method is:</p>
319 Image *FxImage(const Image *image,const char *expression,
320 ExceptionInfo *exception)
321 Image *FxImageChannel(const Image *image,const ChannelType channel,
322 const char *expression,ExceptionInfo *exception)
325 <p>A description of each parameter follows:</p></ol>
328 <ol><p>the image.</p></ol>
331 <ol><p>the channel.</p></ol>
334 <ol><p>A mathematical expression.</p></ol>
337 <ol><p>return any errors or warnings in this structure.</p></ol>
340 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
341 _8c.html" target="source" name="ImplodeImage">ImplodeImage</a></h2>
342 <div class="doc-section">
344 <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>
346 <p>The format of the ImplodeImage method is:</p>
349 Image *ImplodeImage(const Image *image,const double amount,
350 ExceptionInfo *exception)
353 <p>A description of each parameter follows:</p></ol>
355 <h5>implode_image</h5>
356 <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>
359 <ol><p>the image.</p></ol>
362 <ol><p>Define the extent of the implosion.</p></ol>
365 <ol><p>return any errors or warnings in this structure.</p></ol>
368 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
369 _8c.html" target="source" name="The MorphImages">The MorphImages</a></h2>
370 <div class="doc-section">
372 <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>
374 <p>The format of the MorphImage method is:</p>
377 Image *MorphImages(const Image *image,const size_t number_frames,
378 ExceptionInfo *exception)
381 <p>A description of each parameter follows:</p></ol>
384 <ol><p>the image.</p></ol>
386 <h5>number_frames</h5>
387 <ol><p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p></ol>
390 <ol><p>return any errors or warnings in this structure.</p></ol>
393 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
394 _8c.html" target="source" name="PlasmaImage">PlasmaImage</a></h2>
395 <div class="doc-section">
397 <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>
399 <p>The format of the PlasmaImage method is:</p>
402 MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
403 size_t attenuate,size_t depth)
406 <p>A description of each parameter follows:</p></ol>
409 <ol><p>the image.</p></ol>
412 <ol><p> Define the region to apply plasma fractals values.</p></ol>
415 <ol><p>Define the plasma attenuation factor.</p></ol>
418 <ol><p>Limit the plasma recursion depth.</p></ol>
421 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
422 _8c.html" target="source" name="PolaroidImage">PolaroidImage</a></h2>
423 <div class="doc-section">
425 <p>PolaroidImage() simulates a Polaroid picture.</p></ol>
427 <p>The format of the AnnotateImage method is:</p>
430 Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
431 const double angle,ExceptionInfo exception)
434 <p>A description of each parameter follows:</p></ol>
437 <ol><p>the image.</p></ol>
440 <ol><p>the draw info.</p></ol>
443 <ol><p>Apply the effect along this angle.</p></ol>
446 <ol><p>return any errors or warnings in this structure.</p></ol>
449 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
450 _8c.html" target="source" name="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
451 <div class="doc-section">
453 <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>
455 <p>The format of the SepiaToneImage method is:</p>
458 Image *SepiaToneImage(const Image *image,const double threshold,
459 ExceptionInfo *exception)
462 <p>A description of each parameter follows:</p></ol>
465 <ol><p>the image.</p></ol>
468 <ol><p>the tone threshold.</p></ol>
471 <ol><p>return any errors or warnings in this structure.</p></ol>
474 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
475 _8c.html" target="source" name="ShadowImage">ShadowImage</a></h2>
476 <div class="doc-section">
478 <p>ShadowImage() simulates a shadow from the specified image and returns it.</p></ol>
480 <p>The format of the ShadowImage method is:</p>
483 Image *ShadowImage(const Image *image,const double opacity,
484 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
485 ExceptionInfo *exception)
488 <p>A description of each parameter follows:</p></ol>
491 <ol><p>the image.</p></ol>
494 <ol><p>percentage transparency.</p></ol>
497 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
500 <ol><p>the shadow x-offset.</p></ol>
503 <ol><p>the shadow y-offset.</p></ol>
506 <ol><p>return any errors or warnings in this structure.</p></ol>
509 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
510 _8c.html" target="source" name="SketchImage">SketchImage</a></h2>
511 <div class="doc-section">
513 <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>
515 <p>The format of the SketchImage method is:</p>
518 Image *SketchImage(const Image *image,const double radius,
519 const double sigma,const double angle,ExceptionInfo *exception)
522 <p>A description of each parameter follows:</p></ol>
525 <ol><p>the image.</p></ol>
528 <ol><p>the radius of the Gaussian, in pixels, not counting the center pixel.</p></ol>
531 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
534 <ol><p>Apply the effect along this angle.</p></ol>
537 <ol><p>return any errors or warnings in this structure.</p></ol>
540 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
541 _8c.html" target="source" name="SolarizeImage">SolarizeImage</a></h2>
542 <div class="doc-section">
544 <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>
546 <p>The format of the SolarizeImage method is:</p>
549 MagickBooleanType SolarizeImage(Image *image,const double threshold)
552 <p>A description of each parameter follows:</p></ol>
555 <ol><p>the image.</p></ol>
558 <ol><p>Define the extent of the solarization.</p></ol>
561 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
562 _8c.html" target="source" name="SteganoImage">SteganoImage</a></h2>
563 <div class="doc-section">
565 <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>
567 <p>The format of the SteganoImage method is:</p>
570 Image *SteganoImage(const Image *image,Image *watermark,
571 ExceptionInfo *exception)
574 <p>A description of each parameter follows:</p></ol>
577 <ol><p>the image.</p></ol>
580 <ol><p>the watermark image.</p></ol>
583 <ol><p>return any errors or warnings in this structure.</p></ol>
586 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
587 _8c.html" target="source" name="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
588 <div class="doc-section">
590 <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>
592 <p>The format of the StereoAnaglyphImage method is:</p>
595 Image *StereoImage(const Image *left_image,const Image *right_image,
596 ExceptionInfo *exception)
597 Image *StereoAnaglyphImage(const Image *left_image,
598 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
599 ExceptionInfo *exception)
602 <p>A description of each parameter follows:</p></ol>
605 <ol><p>the left image.</p></ol>
608 <ol><p>the right image.</p></ol>
611 <ol><p>return any errors or warnings in this structure.</p></ol>
614 <ol><p>amount, in pixels, by which the left image is offset to the right of the right image.</p></ol>
617 <ol><p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p></ol>
621 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
622 _8c.html" target="source" name="SwirlImage">SwirlImage</a></h2>
623 <div class="doc-section">
625 <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>
627 <p>The format of the SwirlImage method is:</p>
630 Image *SwirlImage(const Image *image,double degrees,
631 ExceptionInfo *exception)
634 <p>A description of each parameter follows:</p></ol>
637 <ol><p>the image.</p></ol>
640 <ol><p>Define the tightness of the swirling effect.</p></ol>
643 <ol><p>return any errors or warnings in this structure.</p></ol>
646 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
647 _8c.html" target="source" name="TintImage">TintImage</a></h2>
648 <div class="doc-section">
650 <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>
652 <p>The format of the TintImage method is:</p>
655 Image *TintImage(const Image *image,const char *opacity,
656 const PixelPacket tint,ExceptionInfo *exception)
659 <p>A description of each parameter follows:</p></ol>
662 <ol><p>the image.</p></ol>
665 <ol><p>A color value used for tinting.</p></ol>
668 <ol><p>A color value used for tinting.</p></ol>
671 <ol><p>return any errors or warnings in this structure.</p></ol>
674 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
675 _8c.html" target="source" name="VignetteImage">VignetteImage</a></h2>
676 <div class="doc-section">
678 <p>VignetteImage() softens the edges of the image in vignette style.</p></ol>
680 <p>The format of the VignetteImage method is:</p>
683 Image *VignetteImage(const Image *image,const double radius,
684 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
687 <p>A description of each parameter follows:</p></ol>
690 <ol><p>the image.</p></ol>
693 <ol><p>the radius of the pixel neighborhood.</p></ol>
696 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
699 <ol><p>Define the x and y ellipse offset.</p></ol>
702 <ol><p>return any errors or warnings in this structure.</p></ol>
705 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
706 _8c.html" target="source" name="WaveImage">WaveImage</a></h2>
707 <div class="doc-section">
709 <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>
711 <p>The format of the WaveImage method is:</p>
714 Image *WaveImage(const Image *image,const double amplitude,
715 const double wave_length,ExceptionInfo *exception)
718 <p>A description of each parameter follows:</p></ol>
721 <ol><p>the image.</p></ol>
723 <h5>amplitude, wave_length</h5>
724 <ol><p>Define the amplitude and wave length of the sine wave.</p></ol>
727 <ol><p>return any errors or warnings in this structure.</p></ol>
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