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176 <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>
178 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
179 _8c.html" target="source" name="AddNoiseImage">AddNoiseImage</a></h2>
180 <div class="doc-section">
182 <p>AddNoiseImage() adds random noise to the image.</p></ol>
184 <p>The format of the AddNoiseImage method is:</p>
187 Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
188 ExceptionInfo *exception)
189 Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
190 const NoiseType noise_type,ExceptionInfo *exception)
193 <p>A description of each parameter follows:</p></ol>
196 <ol><p>the image.</p></ol>
199 <ol><p>the channel type.</p></ol>
202 <ol><p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p></ol>
205 <ol><p>return any errors or warnings in this structure.</p></ol>
208 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
209 _8c.html" target="source" name="BlueShiftImage">BlueShiftImage</a></h2>
210 <div class="doc-section">
212 <p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p></ol>
214 <p>The format of the BlueShiftImage method is:</p>
217 Image *BlueShiftImage(const Image *image,const double factor,
218 ExceptionInfo *exception)
221 <p>A description of each parameter follows:</p></ol>
224 <ol><p>the image.</p></ol>
227 <ol><p>the shift factor.</p></ol>
230 <ol><p>return any errors or warnings in this structure.</p></ol>
233 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
234 _8c.html" target="source" name="CharcoalImage">CharcoalImage</a></h2>
235 <div class="doc-section">
237 <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>
239 <p>The format of the CharcoalImage method is:</p>
242 Image *CharcoalImage(const Image *image,const double radius,
243 const double sigma,ExceptionInfo *exception)
246 <p>A description of each parameter follows:</p></ol>
249 <ol><p>the image.</p></ol>
252 <ol><p>the radius of the pixel neighborhood.</p></ol>
255 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
258 <ol><p>return any errors or warnings in this structure.</p></ol>
261 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
262 _8c.html" target="source" name="ColorizeImage">ColorizeImage</a></h2>
263 <div class="doc-section">
265 <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>
267 <p>The format of the ColorizeImage method is:</p>
270 Image *ColorizeImage(const Image *image,const char *opacity,
271 const PixelPacket colorize,ExceptionInfo *exception)
274 <p>A description of each parameter follows:</p></ol>
277 <ol><p>the image.</p></ol>
280 <ol><p>A character string indicating the level of opacity as a percentage.</p></ol>
283 <ol><p>A color value.</p></ol>
286 <ol><p>return any errors or warnings in this structure.</p></ol>
289 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
290 _8c.html" target="source" name="ColorMatrixImage">ColorMatrixImage</a></h2>
291 <div class="doc-section">
293 <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>
295 <p>The format of the ColorMatrixImage method is:</p>
298 Image *ColorMatrixImage(const Image *image,
299 const KernelInfo *color_matrix,ExceptionInfo *exception)
302 <p>A description of each parameter follows:</p></ol>
305 <ol><p>the image.</p></ol>
307 <h5>color_matrix</h5>
308 <ol><p>the color matrix.</p></ol>
311 <ol><p>return any errors or warnings in this structure.</p></ol>
314 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
315 _8c.html" target="source" name="FxImage">FxImage</a></h2>
316 <div class="doc-section">
318 <p>FxImage() applies a mathematical expression to the specified image.</p></ol>
320 <p>The format of the FxImage method is:</p>
323 Image *FxImage(const Image *image,const char *expression,
324 ExceptionInfo *exception)
325 Image *FxImageChannel(const Image *image,const ChannelType channel,
326 const char *expression,ExceptionInfo *exception)
329 <p>A description of each parameter follows:</p></ol>
332 <ol><p>the image.</p></ol>
335 <ol><p>the channel.</p></ol>
338 <ol><p>A mathematical expression.</p></ol>
341 <ol><p>return any errors or warnings in this structure.</p></ol>
344 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
345 _8c.html" target="source" name="ImplodeImage">ImplodeImage</a></h2>
346 <div class="doc-section">
348 <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>
350 <p>The format of the ImplodeImage method is:</p>
353 Image *ImplodeImage(const Image *image,const double amount,
354 ExceptionInfo *exception)
357 <p>A description of each parameter follows:</p></ol>
359 <h5>implode_image</h5>
360 <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>
363 <ol><p>the image.</p></ol>
366 <ol><p>Define the extent of the implosion.</p></ol>
369 <ol><p>return any errors or warnings in this structure.</p></ol>
372 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
373 _8c.html" target="source" name="The MorphImages">The MorphImages</a></h2>
374 <div class="doc-section">
376 <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>
378 <p>The format of the MorphImage method is:</p>
381 Image *MorphImages(const Image *image,const size_t number_frames,
382 ExceptionInfo *exception)
385 <p>A description of each parameter follows:</p></ol>
388 <ol><p>the image.</p></ol>
390 <h5>number_frames</h5>
391 <ol><p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p></ol>
394 <ol><p>return any errors or warnings in this structure.</p></ol>
397 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
398 _8c.html" target="source" name="PlasmaImage">PlasmaImage</a></h2>
399 <div class="doc-section">
401 <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>
403 <p>The format of the PlasmaImage method is:</p>
406 MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
407 size_t attenuate,size_t depth)
410 <p>A description of each parameter follows:</p></ol>
413 <ol><p>the image.</p></ol>
416 <ol><p> Define the region to apply plasma fractals values.</p></ol>
419 <ol><p>Define the plasma attenuation factor.</p></ol>
422 <ol><p>Limit the plasma recursion depth.</p></ol>
425 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
426 _8c.html" target="source" name="PolaroidImage">PolaroidImage</a></h2>
427 <div class="doc-section">
429 <p>PolaroidImage() simulates a Polaroid picture.</p></ol>
431 <p>The format of the AnnotateImage method is:</p>
434 Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
435 const double angle,ExceptionInfo exception)
438 <p>A description of each parameter follows:</p></ol>
441 <ol><p>the image.</p></ol>
444 <ol><p>the draw info.</p></ol>
447 <ol><p>Apply the effect along this angle.</p></ol>
450 <ol><p>return any errors or warnings in this structure.</p></ol>
453 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
454 _8c.html" target="source" name="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
455 <div class="doc-section">
457 <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>
459 <p>The format of the SepiaToneImage method is:</p>
462 Image *SepiaToneImage(const Image *image,const double threshold,
463 ExceptionInfo *exception)
466 <p>A description of each parameter follows:</p></ol>
469 <ol><p>the image.</p></ol>
472 <ol><p>the tone threshold.</p></ol>
475 <ol><p>return any errors or warnings in this structure.</p></ol>
478 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
479 _8c.html" target="source" name="ShadowImage">ShadowImage</a></h2>
480 <div class="doc-section">
482 <p>ShadowImage() simulates a shadow from the specified image and returns it.</p></ol>
484 <p>The format of the ShadowImage method is:</p>
487 Image *ShadowImage(const Image *image,const double opacity,
488 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
489 ExceptionInfo *exception)
492 <p>A description of each parameter follows:</p></ol>
495 <ol><p>the image.</p></ol>
498 <ol><p>percentage transparency.</p></ol>
501 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
504 <ol><p>the shadow x-offset.</p></ol>
507 <ol><p>the shadow y-offset.</p></ol>
510 <ol><p>return any errors or warnings in this structure.</p></ol>
513 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
514 _8c.html" target="source" name="SketchImage">SketchImage</a></h2>
515 <div class="doc-section">
517 <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>
519 <p>The format of the SketchImage method is:</p>
522 Image *SketchImage(const Image *image,const double radius,
523 const double sigma,const double angle,ExceptionInfo *exception)
526 <p>A description of each parameter follows:</p></ol>
529 <ol><p>the image.</p></ol>
532 <ol><p>the radius of the Gaussian, in pixels, not counting the center pixel.</p></ol>
535 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
538 <ol><p>Apply the effect along this angle.</p></ol>
541 <ol><p>return any errors or warnings in this structure.</p></ol>
544 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
545 _8c.html" target="source" name="SolarizeImage">SolarizeImage</a></h2>
546 <div class="doc-section">
548 <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>
550 <p>The format of the SolarizeImage method is:</p>
553 MagickBooleanType SolarizeImage(Image *image,const double threshold)
556 <p>A description of each parameter follows:</p></ol>
559 <ol><p>the image.</p></ol>
562 <ol><p>Define the extent of the solarization.</p></ol>
565 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
566 _8c.html" target="source" name="SteganoImage">SteganoImage</a></h2>
567 <div class="doc-section">
569 <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>
571 <p>The format of the SteganoImage method is:</p>
574 Image *SteganoImage(const Image *image,Image *watermark,
575 ExceptionInfo *exception)
578 <p>A description of each parameter follows:</p></ol>
581 <ol><p>the image.</p></ol>
584 <ol><p>the watermark image.</p></ol>
587 <ol><p>return any errors or warnings in this structure.</p></ol>
590 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
591 _8c.html" target="source" name="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
592 <div class="doc-section">
594 <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>
596 <p>The format of the StereoAnaglyphImage method is:</p>
599 Image *StereoImage(const Image *left_image,const Image *right_image,
600 ExceptionInfo *exception)
601 Image *StereoAnaglyphImage(const Image *left_image,
602 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
603 ExceptionInfo *exception)
606 <p>A description of each parameter follows:</p></ol>
609 <ol><p>the left image.</p></ol>
612 <ol><p>the right image.</p></ol>
615 <ol><p>return any errors or warnings in this structure.</p></ol>
618 <ol><p>amount, in pixels, by which the left image is offset to the right of the right image.</p></ol>
621 <ol><p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p></ol>
625 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
626 _8c.html" target="source" name="SwirlImage">SwirlImage</a></h2>
627 <div class="doc-section">
629 <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>
631 <p>The format of the SwirlImage method is:</p>
634 Image *SwirlImage(const Image *image,double degrees,
635 ExceptionInfo *exception)
638 <p>A description of each parameter follows:</p></ol>
641 <ol><p>the image.</p></ol>
644 <ol><p>Define the tightness of the swirling effect.</p></ol>
647 <ol><p>return any errors or warnings in this structure.</p></ol>
650 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
651 _8c.html" target="source" name="TintImage">TintImage</a></h2>
652 <div class="doc-section">
654 <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>
656 <p>The format of the TintImage method is:</p>
659 Image *TintImage(const Image *image,const char *opacity,
660 const PixelPacket tint,ExceptionInfo *exception)
663 <p>A description of each parameter follows:</p></ol>
666 <ol><p>the image.</p></ol>
669 <ol><p>A color value used for tinting.</p></ol>
672 <ol><p>A color value used for tinting.</p></ol>
675 <ol><p>return any errors or warnings in this structure.</p></ol>
678 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
679 _8c.html" target="source" name="VignetteImage">VignetteImage</a></h2>
680 <div class="doc-section">
682 <p>VignetteImage() softens the edges of the image in vignette style.</p></ol>
684 <p>The format of the VignetteImage method is:</p>
687 Image *VignetteImage(const Image *image,const double radius,
688 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
691 <p>A description of each parameter follows:</p></ol>
694 <ol><p>the image.</p></ol>
697 <ol><p>the radius of the pixel neighborhood.</p></ol>
700 <ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>
703 <ol><p>Define the x and y ellipse offset.</p></ol>
706 <ol><p>return any errors or warnings in this structure.</p></ol>
709 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx
710 _8c.html" target="source" name="WaveImage">WaveImage</a></h2>
711 <div class="doc-section">
713 <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>
715 <p>The format of the WaveImage method is:</p>
718 Image *WaveImage(const Image *image,const double amplitude,
719 const double wave_length,ExceptionInfo *exception)
722 <p>A description of each parameter follows:</p></ol>
725 <ol><p>the image.</p></ol>
727 <h5>amplitude, wave_length</h5>
728 <ol><p>Define the amplitude and wave length of the sine wave.</p></ol>
731 <ol><p>return any errors or warnings in this structure.</p></ol>
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