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173 <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>
175 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
176 _8c.html" target="source" name="AddNoiseImage">AddNoiseImage</a></h2>
177 <div class="doc-section">
179 <p>AddNoiseImage() adds random noise to the image.</p></ol>
181 <p>The format of the AddNoiseImage method is:</p>
184 Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
185 ExceptionInfo *exception)
186 Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
187 const NoiseType noise_type,ExceptionInfo *exception)
190 <p>A description of each parameter follows:</p></ol>
193 <ol><p>the image.</p></ol>
196 <ol><p>the channel type.</p></ol>
199 <ol><p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p></ol>
202 <ol><p>return any errors or warnings in this structure.</p></ol>
205 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
206 _8c.html" target="source" name="BlueShiftImage">BlueShiftImage</a></h2>
207 <div class="doc-section">
209 <p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p></ol>
211 <p>The format of the BlueShiftImage method is:</p>
214 Image *BlueShiftImage(const Image *image,const double factor,
215 ExceptionInfo *exception)
218 <p>A description of each parameter follows:</p></ol>
221 <ol><p>the image.</p></ol>
224 <ol><p>the shift factor.</p></ol>
227 <ol><p>return any errors or warnings in this structure.</p></ol>
230 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
231 _8c.html" target="source" name="CharcoalImage">CharcoalImage</a></h2>
232 <div class="doc-section">
234 <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>
236 <p>The format of the CharcoalImage method is:</p>
239 Image *CharcoalImage(const Image *image,const double radius,
240 const double sigma,ExceptionInfo *exception)
243 <p>A description of each parameter follows:</p></ol>
246 <ol><p>the image.</p></ol>
249 <ol><p>the radius of the pixel neighborhood.</p></ol>
252 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
255 <ol><p>return any errors or warnings in this structure.</p></ol>
258 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
259 _8c.html" target="source" name="ColorizeImage">ColorizeImage</a></h2>
260 <div class="doc-section">
262 <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>
264 <p>The format of the ColorizeImage method is:</p>
267 Image *ColorizeImage(const Image *image,const char *opacity,
268 const PixelPacket colorize,ExceptionInfo *exception)
271 <p>A description of each parameter follows:</p></ol>
274 <ol><p>the image.</p></ol>
277 <ol><p>A character string indicating the level of opacity as a percentage.</p></ol>
280 <ol><p>A color value.</p></ol>
283 <ol><p>return any errors or warnings in this structure.</p></ol>
286 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
287 _8c.html" target="source" name="ColorMatrixImage">ColorMatrixImage</a></h2>
288 <div class="doc-section">
290 <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>
292 <p>The format of the ColorMatrixImage method is:</p>
295 Image *ColorMatrixImage(const Image *image,
296 const KernelInfo *color_matrix,ExceptionInfo *exception)
299 <p>A description of each parameter follows:</p></ol>
302 <ol><p>the image.</p></ol>
304 <h5>color_matrix</h5>
305 <ol><p>the color matrix.</p></ol>
308 <ol><p>return any errors or warnings in this structure.</p></ol>
311 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
312 _8c.html" target="source" name="FxImage">FxImage</a></h2>
313 <div class="doc-section">
315 <p>FxImage() applies a mathematical expression to the specified image.</p></ol>
317 <p>The format of the FxImage method is:</p>
320 Image *FxImage(const Image *image,const char *expression,
321 ExceptionInfo *exception)
322 Image *FxImageChannel(const Image *image,const ChannelType channel,
323 const char *expression,ExceptionInfo *exception)
326 <p>A description of each parameter follows:</p></ol>
329 <ol><p>the image.</p></ol>
332 <ol><p>the channel.</p></ol>
335 <ol><p>A mathematical expression.</p></ol>
338 <ol><p>return any errors or warnings in this structure.</p></ol>
341 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
342 _8c.html" target="source" name="ImplodeImage">ImplodeImage</a></h2>
343 <div class="doc-section">
345 <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>
347 <p>The format of the ImplodeImage method is:</p>
350 Image *ImplodeImage(const Image *image,const double amount,
351 ExceptionInfo *exception)
354 <p>A description of each parameter follows:</p></ol>
356 <h5>implode_image</h5>
357 <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>
360 <ol><p>the image.</p></ol>
363 <ol><p>Define the extent of the implosion.</p></ol>
366 <ol><p>return any errors or warnings in this structure.</p></ol>
369 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
370 _8c.html" target="source" name="The MorphImages">The MorphImages</a></h2>
371 <div class="doc-section">
373 <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>
375 <p>The format of the MorphImage method is:</p>
378 Image *MorphImages(const Image *image,const size_t number_frames,
379 ExceptionInfo *exception)
382 <p>A description of each parameter follows:</p></ol>
385 <ol><p>the image.</p></ol>
387 <h5>number_frames</h5>
388 <ol><p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p></ol>
391 <ol><p>return any errors or warnings in this structure.</p></ol>
394 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
395 _8c.html" target="source" name="PlasmaImage">PlasmaImage</a></h2>
396 <div class="doc-section">
398 <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>
400 <p>The format of the PlasmaImage method is:</p>
403 MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
404 size_t attenuate,size_t depth)
407 <p>A description of each parameter follows:</p></ol>
410 <ol><p>the image.</p></ol>
413 <ol><p> Define the region to apply plasma fractals values.</p></ol>
416 <ol><p>Define the plasma attenuation factor.</p></ol>
419 <ol><p>Limit the plasma recursion depth.</p></ol>
422 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
423 _8c.html" target="source" name="PolaroidImage">PolaroidImage</a></h2>
424 <div class="doc-section">
426 <p>PolaroidImage() simulates a Polaroid picture.</p></ol>
428 <p>The format of the AnnotateImage method is:</p>
431 Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
432 const double angle,ExceptionInfo exception)
435 <p>A description of each parameter follows:</p></ol>
438 <ol><p>the image.</p></ol>
441 <ol><p>the draw info.</p></ol>
444 <ol><p>Apply the effect along this angle.</p></ol>
447 <ol><p>return any errors or warnings in this structure.</p></ol>
450 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
451 _8c.html" target="source" name="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
452 <div class="doc-section">
454 <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>
456 <p>The format of the SepiaToneImage method is:</p>
459 Image *SepiaToneImage(const Image *image,const double threshold,
460 ExceptionInfo *exception)
463 <p>A description of each parameter follows:</p></ol>
466 <ol><p>the image.</p></ol>
469 <ol><p>the tone threshold.</p></ol>
472 <ol><p>return any errors or warnings in this structure.</p></ol>
475 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
476 _8c.html" target="source" name="ShadowImage">ShadowImage</a></h2>
477 <div class="doc-section">
479 <p>ShadowImage() simulates a shadow from the specified image and returns it.</p></ol>
481 <p>The format of the ShadowImage method is:</p>
484 Image *ShadowImage(const Image *image,const double opacity,
485 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
486 ExceptionInfo *exception)
489 <p>A description of each parameter follows:</p></ol>
492 <ol><p>the image.</p></ol>
495 <ol><p>percentage transparency.</p></ol>
498 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
501 <ol><p>the shadow x-offset.</p></ol>
504 <ol><p>the shadow y-offset.</p></ol>
507 <ol><p>return any errors or warnings in this structure.</p></ol>
510 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
511 _8c.html" target="source" name="SketchImage">SketchImage</a></h2>
512 <div class="doc-section">
514 <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>
516 <p>The format of the SketchImage method is:</p>
519 Image *SketchImage(const Image *image,const double radius,
520 const double sigma,const double angle,ExceptionInfo *exception)
523 <p>A description of each parameter follows:</p></ol>
526 <ol><p>the image.</p></ol>
529 <ol><p>the radius of the Gaussian, in pixels, not counting the center pixel.</p></ol>
532 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
535 <ol><p>Apply the effect along this angle.</p></ol>
538 <ol><p>return any errors or warnings in this structure.</p></ol>
541 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
542 _8c.html" target="source" name="SolarizeImage">SolarizeImage</a></h2>
543 <div class="doc-section">
545 <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>
547 <p>The format of the SolarizeImage method is:</p>
550 MagickBooleanType SolarizeImage(Image *image,const double threshold)
553 <p>A description of each parameter follows:</p></ol>
556 <ol><p>the image.</p></ol>
559 <ol><p>Define the extent of the solarization.</p></ol>
562 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
563 _8c.html" target="source" name="SteganoImage">SteganoImage</a></h2>
564 <div class="doc-section">
566 <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>
568 <p>The format of the SteganoImage method is:</p>
571 Image *SteganoImage(const Image *image,Image *watermark,
572 ExceptionInfo *exception)
575 <p>A description of each parameter follows:</p></ol>
578 <ol><p>the image.</p></ol>
581 <ol><p>the watermark image.</p></ol>
584 <ol><p>return any errors or warnings in this structure.</p></ol>
587 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
588 _8c.html" target="source" name="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
589 <div class="doc-section">
591 <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>
593 <p>The format of the StereoAnaglyphImage method is:</p>
596 Image *StereoImage(const Image *left_image,const Image *right_image,
597 ExceptionInfo *exception)
598 Image *StereoAnaglyphImage(const Image *left_image,
599 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
600 ExceptionInfo *exception)
603 <p>A description of each parameter follows:</p></ol>
606 <ol><p>the left image.</p></ol>
609 <ol><p>the right image.</p></ol>
612 <ol><p>return any errors or warnings in this structure.</p></ol>
615 <ol><p>amount, in pixels, by which the left image is offset to the right of the right image.</p></ol>
618 <ol><p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p></ol>
622 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
623 _8c.html" target="source" name="SwirlImage">SwirlImage</a></h2>
624 <div class="doc-section">
626 <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>
628 <p>The format of the SwirlImage method is:</p>
631 Image *SwirlImage(const Image *image,double degrees,
632 ExceptionInfo *exception)
635 <p>A description of each parameter follows:</p></ol>
638 <ol><p>the image.</p></ol>
641 <ol><p>Define the tightness of the swirling effect.</p></ol>
644 <ol><p>return any errors or warnings in this structure.</p></ol>
647 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
648 _8c.html" target="source" name="TintImage">TintImage</a></h2>
649 <div class="doc-section">
651 <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>
653 <p>The format of the TintImage method is:</p>
656 Image *TintImage(const Image *image,const char *opacity,
657 const PixelPacket tint,ExceptionInfo *exception)
660 <p>A description of each parameter follows:</p></ol>
663 <ol><p>the image.</p></ol>
666 <ol><p>A color value used for tinting.</p></ol>
669 <ol><p>A color value used for tinting.</p></ol>
672 <ol><p>return any errors or warnings in this structure.</p></ol>
675 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
676 _8c.html" target="source" name="VignetteImage">VignetteImage</a></h2>
677 <div class="doc-section">
679 <p>VignetteImage() softens the edges of the image in vignette style.</p></ol>
681 <p>The format of the VignetteImage method is:</p>
684 Image *VignetteImage(const Image *image,const double radius,
685 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
688 <p>A description of each parameter follows:</p></ol>
691 <ol><p>the image.</p></ol>
694 <ol><p>the radius of the pixel neighborhood.</p></ol>
697 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
700 <ol><p>Define the x and y ellipse offset.</p></ol>
703 <ol><p>return any errors or warnings in this structure.</p></ol>
706 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
707 _8c.html" target="source" name="WaveImage">WaveImage</a></h2>
708 <div class="doc-section">
710 <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>
712 <p>The format of the WaveImage method is:</p>
715 Image *WaveImage(const Image *image,const double amplitude,
716 const double wave_length,ExceptionInfo *exception)
719 <p>A description of each parameter follows:</p></ol>
722 <ol><p>the image.</p></ol>
724 <h5>amplitude, wave_length</h5>
725 <ol><p>Define the amplitude and wave length of the sine wave.</p></ol>
728 <ol><p>return any errors or warnings in this structure.</p></ol>
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