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180 <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>
182 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
183 _8c.html" id="AddNoiseImage">AddNoiseImage</a></h2>
184 <div class="doc-section">
186 <p>AddNoiseImage() adds random noise to the image.</p>
188 <p>The format of the AddNoiseImage method is:</p>
191 Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
192 ExceptionInfo *exception)
193 Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
194 const NoiseType noise_type,ExceptionInfo *exception)
197 <p>A description of each parameter follows:</p>
203 <p>the channel type.</p>
206 <p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p>
209 <p>return any errors or warnings in this structure.</p>
212 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
213 _8c.html" id="BlueShiftImage">BlueShiftImage</a></h2>
214 <div class="doc-section">
216 <p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p>
218 <p>The format of the BlueShiftImage method is:</p>
221 Image *BlueShiftImage(const Image *image,const double factor,
222 ExceptionInfo *exception)
225 <p>A description of each parameter follows:</p>
231 <p>the shift factor.</p>
234 <p>return any errors or warnings in this structure.</p>
237 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
238 _8c.html" id="CharcoalImage">CharcoalImage</a></h2>
239 <div class="doc-section">
241 <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>
243 <p>The format of the CharcoalImage method is:</p>
246 Image *CharcoalImage(const Image *image,const double radius,
247 const double sigma,ExceptionInfo *exception)
250 <p>A description of each parameter follows:</p>
256 <p>the radius of the pixel neighborhood.</p>
259 <p>the standard deviation of the Gaussian, in pixels.</p>
262 <p>return any errors or warnings in this structure.</p>
265 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
266 _8c.html" id="ColorizeImage">ColorizeImage</a></h2>
267 <div class="doc-section">
269 <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>
271 <p>The format of the ColorizeImage method is:</p>
274 Image *ColorizeImage(const Image *image,const char *opacity,
275 const PixelPacket colorize,ExceptionInfo *exception)
278 <p>A description of each parameter follows:</p>
284 <p>A character string indicating the level of opacity as a percentage.</p>
287 <p>A color value.</p>
290 <p>return any errors or warnings in this structure.</p>
293 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
294 _8c.html" id="ColorMatrixImage">ColorMatrixImage</a></h2>
295 <div class="doc-section">
297 <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>
299 <p>The format of the ColorMatrixImage method is:</p>
302 Image *ColorMatrixImage(const Image *image,
303 const KernelInfo *color_matrix,ExceptionInfo *exception)
306 <p>A description of each parameter follows:</p>
311 <h5>color_matrix</h5>
312 <p>the color matrix.</p>
315 <p>return any errors or warnings in this structure.</p>
318 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
319 _8c.html" id="FxImage">FxImage</a></h2>
320 <div class="doc-section">
322 <p>FxImage() applies a mathematical expression to the specified image.</p>
324 <p>The format of the FxImage method is:</p>
327 Image *FxImage(const Image *image,const char *expression,
328 ExceptionInfo *exception)
329 Image *FxImageChannel(const Image *image,const ChannelType channel,
330 const char *expression,ExceptionInfo *exception)
333 <p>A description of each parameter follows:</p>
342 <p>A mathematical expression.</p>
345 <p>return any errors or warnings in this structure.</p>
348 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
349 _8c.html" id="ImplodeImage">ImplodeImage</a></h2>
350 <div class="doc-section">
352 <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>
354 <p>The format of the ImplodeImage method is:</p>
357 Image *ImplodeImage(const Image *image,const double amount,
358 ExceptionInfo *exception)
361 <p>A description of each parameter follows:</p>
363 <h5>implode_image</h5>
364 <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>
370 <p>Define the extent of the implosion.</p>
373 <p>return any errors or warnings in this structure.</p>
376 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
377 _8c.html" id="The_MorphImages">The MorphImages</a></h2>
378 <div class="doc-section">
380 <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>
382 <p>The format of the MorphImage method is:</p>
385 Image *MorphImages(const Image *image,const size_t number_frames,
386 ExceptionInfo *exception)
389 <p>A description of each parameter follows:</p>
394 <h5>number_frames</h5>
395 <p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p>
398 <p>return any errors or warnings in this structure.</p>
401 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
402 _8c.html" id="PlasmaImage">PlasmaImage</a></h2>
403 <div class="doc-section">
405 <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>
407 <p>The format of the PlasmaImage method is:</p>
410 MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
411 size_t attenuate,size_t depth)
414 <p>A description of each parameter follows:</p>
420 <p> Define the region to apply plasma fractals values.</p>
423 <p>Define the plasma attenuation factor.</p>
426 <p>Limit the plasma recursion depth.</p>
429 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
430 _8c.html" id="PolaroidImage">PolaroidImage</a></h2>
431 <div class="doc-section">
433 <p>PolaroidImage() simulates a Polaroid picture.</p>
435 <p>The format of the AnnotateImage method is:</p>
438 Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
439 const double angle,ExceptionInfo exception)
442 <p>A description of each parameter follows:</p>
448 <p>the draw info.</p>
451 <p>Apply the effect along this angle.</p>
454 <p>return any errors or warnings in this structure.</p>
457 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
458 _8c.html" id="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
459 <div class="doc-section">
461 <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>
463 <p>The format of the SepiaToneImage method is:</p>
466 Image *SepiaToneImage(const Image *image,const double threshold,
467 ExceptionInfo *exception)
470 <p>A description of each parameter follows:</p>
476 <p>the tone threshold.</p>
479 <p>return any errors or warnings in this structure.</p>
482 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
483 _8c.html" id="ShadowImage">ShadowImage</a></h2>
484 <div class="doc-section">
486 <p>ShadowImage() simulates a shadow from the specified image and returns it.</p>
488 <p>The format of the ShadowImage method is:</p>
491 Image *ShadowImage(const Image *image,const double opacity,
492 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
493 ExceptionInfo *exception)
496 <p>A description of each parameter follows:</p>
502 <p>percentage transparency.</p>
505 <p>the standard deviation of the Gaussian, in pixels.</p>
508 <p>the shadow x-offset.</p>
511 <p>the shadow y-offset.</p>
514 <p>return any errors or warnings in this structure.</p>
517 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
518 _8c.html" id="SketchImage">SketchImage</a></h2>
519 <div class="doc-section">
521 <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>
523 <p>The format of the SketchImage method is:</p>
526 Image *SketchImage(const Image *image,const double radius,
527 const double sigma,const double angle,ExceptionInfo *exception)
530 <p>A description of each parameter follows:</p>
536 <p>the radius of the Gaussian, in pixels, not counting the center pixel.</p>
539 <p>the standard deviation of the Gaussian, in pixels.</p>
542 <p>Apply the effect along this angle.</p>
545 <p>return any errors or warnings in this structure.</p>
548 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
549 _8c.html" id="SolarizeImage">SolarizeImage</a></h2>
550 <div class="doc-section">
552 <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>
554 <p>The format of the SolarizeImage method is:</p>
557 MagickBooleanType SolarizeImage(Image *image,const double threshold)
560 <p>A description of each parameter follows:</p>
566 <p>Define the extent of the solarization.</p>
569 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
570 _8c.html" id="SteganoImage">SteganoImage</a></h2>
571 <div class="doc-section">
573 <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>
575 <p>The format of the SteganoImage method is:</p>
578 Image *SteganoImage(const Image *image,Image *watermark,
579 ExceptionInfo *exception)
582 <p>A description of each parameter follows:</p>
588 <p>the watermark image.</p>
591 <p>return any errors or warnings in this structure.</p>
594 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
595 _8c.html" id="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
596 <div class="doc-section">
598 <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>
600 <p>The format of the StereoAnaglyphImage method is:</p>
603 Image *StereoImage(const Image *left_image,const Image *right_image,
604 ExceptionInfo *exception)
605 Image *StereoAnaglyphImage(const Image *left_image,
606 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
607 ExceptionInfo *exception)
610 <p>A description of each parameter follows:</p>
613 <p>the left image.</p>
616 <p>the right image.</p>
619 <p>return any errors or warnings in this structure.</p>
622 <p>amount, in pixels, by which the left image is offset to the right of the right image.</p>
625 <p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p>
629 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
630 _8c.html" id="SwirlImage">SwirlImage</a></h2>
631 <div class="doc-section">
633 <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>
635 <p>The format of the SwirlImage method is:</p>
638 Image *SwirlImage(const Image *image,double degrees,
639 ExceptionInfo *exception)
642 <p>A description of each parameter follows:</p>
648 <p>Define the tightness of the swirling effect.</p>
651 <p>return any errors or warnings in this structure.</p>
654 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
655 _8c.html" id="TintImage">TintImage</a></h2>
656 <div class="doc-section">
658 <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>
660 <p>The format of the TintImage method is:</p>
663 Image *TintImage(const Image *image,const char *opacity,
664 const PixelPacket tint,ExceptionInfo *exception)
667 <p>A description of each parameter follows:</p>
673 <p>A color value used for tinting.</p>
676 <p>A color value used for tinting.</p>
679 <p>return any errors or warnings in this structure.</p>
682 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
683 _8c.html" id="VignetteImage">VignetteImage</a></h2>
684 <div class="doc-section">
686 <p>VignetteImage() softens the edges of the image in vignette style.</p>
688 <p>The format of the VignetteImage method is:</p>
691 Image *VignetteImage(const Image *image,const double radius,
692 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
695 <p>A description of each parameter follows:</p>
701 <p>the radius of the pixel neighborhood.</p>
704 <p>the standard deviation of the Gaussian, in pixels.</p>
707 <p>Define the x and y ellipse offset.</p>
710 <p>return any errors or warnings in this structure.</p>
713 <h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
714 _8c.html" id="WaveImage">WaveImage</a></h2>
715 <div class="doc-section">
717 <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>
719 <p>The format of the WaveImage method is:</p>
722 Image *WaveImage(const Image *image,const double amplitude,
723 const double wave_length,ExceptionInfo *exception)
726 <p>A description of each parameter follows:</p>
731 <h5>amplitude, wave_length</h5>
732 <p>Define the amplitude and wave length of the sine wave.</p>
735 <p>return any errors or warnings in this structure.</p>
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