1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
\r
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
\r
3 <html version="-//W3C//DTD XHTML 1.1//EN"
\r
4 xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
\r
5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
\r
6 xsi:schemaLocation="http://www.w3.org/1999/xhtml
\r
7 http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
\r
9 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
\r
10 <meta name="verify-v1" content="g222frIIxcQTrvDR3NBRUSKP3AnMNoqxOkIniCEkV7U="/>
\r
11 <title>ImageMagick: MagickCore, C API for ImageMagick: Add a Special Effect</title>
12 <meta http-equiv="Content-Language" content="en-US"/>
13 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
14 <meta http-equiv="Reply-to" content="magick-users@imagemagick.org"/>
15 <meta name="Application-name" content="ImageMagick"/>
16 <meta name="Description" content="Use ImageMagick to convert, edit, or compose bitmap images in a variety of formats. In addition resize, rotate, shear, distort and transform images automagically."/>
17 <meta name="Application-url" content="http://www.imagemagick.org"/>
18 <meta name="Generator" content="PHP"/>
19 <meta name="Keywords" content="magickcore, c, api, for, imagemagick:, add, a, special, effect, ImageMagick, ImageMagic, MagickCore, MagickWand, PerlMagick, Magick++, RMagick, PythonMagick, JMagick, TclMagick, Image, Magick, Magic, Wand, ImageMagickObject, Image, Processing, Automagically"/>
20 <meta name="Rating" content="GENERAL"/>
21 <meta name="Robots" content="INDEX, FOLLOW"/>
22 <meta name="Generator" content="ImageMagick Studio LLC"/>
23 <meta name="Author" content="ImageMagick Studio LLC"/>
24 <meta name="Revisit-after" content="2 DAYS"/>
25 <meta name="Resource-type" content="document"/>
26 <meta name="Copyright" content="Copyright (c) 1999-2011 ImageMagick Studio LLC"/>
27 <meta name="Distribution" content="Global"/>
28 <link rel="icon" href="../../images/wand.png"/>
29 <link rel="shortcut icon" href="../../images/wand.ico" type="images/x-icon"/>
30 <link rel="meta" type="application/rdf+xml" title="ICI" href="http://imagemagick.org/ici.rdf"/>
\r
31 <link rel="stylesheet" href="http://www.google.com/cse/style/look/default.css" type="text/css" />
\r
32 <style type="text/css" media="all">
\r
33 @import url("../../www/magick.css");
\r
35 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
\r
36 <script type="text/javascript" src="../fancybox/jquery.fancybox-1.3.4.pack.js"></script>
\r
37 <link rel="stylesheet" type="text/css" href="../fancybox/jquery.fancybox-1.3.4.css" media="screen" />
\r
38 <script type="text/javascript">
\r
39 $(document).ready(function() {
\r
40 $("a[href$=.jpg],a[href$=.png],a[href$=.gif]").fancybox({
\r
41 'transitionIn' : 'elastic',
\r
42 'transitionOut' : 'elastic',
\r
43 'overlayShow' : false,
\r
50 <body id="www-imagemagick-org">
\r
51 <div class="titlebar">
\r
52 <div style="margin: 17px auto; float: left;">
\r
53 <script type="text/javascript">
\r
55 google_ad_client = "pub-3129977114552745";
\r
56 google_ad_slot = "5439289906";
\r
57 google_ad_width = 728;
\r
58 google_ad_height = 90;
\r
61 <script type="text/javascript"
\r
62 src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
\r
65 <a href="http://www.imagemagick.org/discourse-server/">
\r
66 <img src="../../images/logo.jpg"
\r
67 alt="ImageMagick Logo"
\r
68 style="width: 123px; height: 118px; border: 0px; float: right;" /></a>
\r
69 <a href="../../index.html">
\r
70 <img src="../../images/sprite.jpg"
\r
71 alt="ImageMagick Sprite"
\r
72 style="width: 114px; height: 118px; border: 0px; float: right;" /></a>
\r
75 <div class="westbar">
\r
78 <a title="About ImageMagick" href="../../index.html">About ImageMagick</a>
80 <div class="sep"></div>
\r
82 <a title="Binary Releases" href="../../www/binary-releases.html">Binary Releases</a>
85 <a title="Binary Release: Unix" href="../../www/binary-releases.html#unix">Unix</a>
88 <a title="Binary Release: MacOS X" href="../../www/binary-releases.html#macosx">Mac OS X</a>
91 <a title="Binary Release: iOS" href="../../www/binary-releases.html#iOS">iOS</a>
94 <a title="Binary Release: Windows" href="../../www/binary-releases.html#windows">Windows</a>
96 <div class="sep"></div>
\r
98 <a title="Command-line Tools" href="../../www/command-line-tools.html">Command-line Tools</a>
101 <a title="Command-line Tools: Processing" href="../../www/command-line-processing.html">Processing</a>
104 <a title="Command-line Tools: Options" href="../../www/command-line-options.html">Options</a>
107 <a title="Command-line Tools: Usage" href="http://www.imagemagick.org/Usage/">Usage</a>
110 <a title="Program Interfaces" href="../../www/api.html">Program Interfaces</a>
113 <a title="Program Interface: MagickWand" href="../../www/magick-wand.html">MagickWand</a>
116 <a title="Program Interface: MagickCore" href="../../www/magick-core.html">MagickCore</a>
119 <a title="Program Interface: PerlMagick" href="../../www/perl-magick.html">PerlMagick</a>
122 <a title="Program Interface: Magick++" href="../../www/magick++.html">Magick++</a>
124 <div class="sep"></div>
\r
126 <a title="Install from Source" href="../../www/install-source.html">Install from Source</a>
129 <a title="Install from Source: Unix" href="../../www/install-source.html#unix">Unix</a>
132 <a title="Install from Source: Windows" href="../../www/install-source.html#windows">Windows</a>
135 <a title="Resources" href="../../www/resources.html">Resources</a>
138 <a title="Architecture" href="../../www/architecture.html">Architecture</a>
141 <a title="Download" href="../../www/download.html">Download</a>
143 <div class="sep"></div>
\r
145 <a title="Search" href="../../www/search.html">Search</a>
147 <div class="sep"></div>
\r
149 <a title="Site Map" href="../../www/sitemap.html">Site Map</a>
152 <a title="Site Map: Links" href="../../www/links.html">Links</a>
154 <div class="sep"></div>
\r
156 <a rel="follow" title="Sponsors" href="../../www/sponsors.html">Sponsors:</a>
158 <a href="http://www.networkredux.com">
159 <img src="../../images/networkredux.png" alt="[sponsor]"
160 style="margin-top: 4px; margin-left: 4px; border: 0px; float: left;" /></a>
161 <div class="sponsbox">
162 <div class="sponsor">
163 <a rel="follow" title="Sponsor: Web Hosting" href="http://www.micfo.com">Web Hosting</a><!-- 209901010090s golestan -->
165 <div class="sponsor">
166 <a rel="follow" title="Sponsor: Search engine optimisation" href="http://www.seomoves.com.au">Search engine optimisation</a><!-- 201110010090s jen@seo lowprofilelinks -->
168 <div class="sponsor">
169 <a rel="follow" title="Sponsor: Druckerei" href="http://print24.com/de/">Druckerei</a><!-- 201110010720 -->
171 <div class="sponsor">
172 <a rel="follow" title="Sponsor: Web Hosting Deals" href="http://www.webhostingdeals.org">Web Hosting Deals</a><!-- 201111010270 chee.hoa darin -->
174 <div class="sponsor">
175 <a rel="follow" title="Sponsor: Web Hosting Reviews" href="http://www.webhostingsecretrevealed.com">Web Hosting Secret Revealed</a><!-- 201204010540 iamchee jerry -->
177 <div class="sponsor">
178 <a rel="follow" title="Sponsor: Web Hosting Break" href="http://www.webhostingbreak.com">Web Hosting Break</a><!-- 201109010090 ian@ian-m... -->
180 <div class="sponsor">
181 <a rel="follow" title="Sponsor: Druckerei" href="http://www.allesdruck.de">Druckerei</a><!-- 201303011500 r.leo -->
183 <div class="sponsor">
184 <a rel="follow" title="Sponsor: Website Hosting" href="http://www.hostreviewgeeks.com">Website Hosting</a><!-- 201110010090 alexanian media -->
186 <div class="sponsor">
187 <a rel="follow" title="Sponsor: Hotel München" href="http://www.messehotel-erb-muenchen.de">Hotel München</a><!-- 201111010450 cerb -->
189 <div class="sponsor">
190 <a rel="follow" title="Sponsor: Best Web Hosting" href="http://webhostinggeeks.com">Best Web Hosting</a><!-- 201110010720 -->
192 <div class="sponsor">
193 <a rel="follow" title="Sponsor: Flyer drucken" href="http://www.online-druck.biz">Flyer drucken</a><!-- 201109010900 Floeter-->
195 <div class="sponsor">
196 <a rel="follow" title="Sponsor: Web Hosting Reviews" href="http://www.webhostingmasters.com">Web Hosting Reviews</a><!-- 201107011500 affliatelabel -->
198 <div class="sponsor">
199 <a rel="follow" title="Sponsor: Web Hosting Ratings" href="http://webhostingrating.com">Web Hosting Ratings</a><!-- 201110010720 -->
201 <div class="sponsor">
202 <a rel="follow" title="Kaffeevollautomaten Reparatur Kundendienst Berlin" href="http://www.kaffeemaschinen-center.de">Kaffeevollautomaten Reparatur Berlin</a><!-- 2011090100025 c.karule-->
208 <div class="eastbar">
\r
214 <h1>Module fx Methods</h1>
215 <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>
217 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="AddNoiseImage">AddNoiseImage</a></h2>
218 <div class="doc-section">
220 <p>AddNoiseImage() adds random noise to the image.</p>
222 <p>The format of the AddNoiseImage method is:</p>
225 Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
226 ExceptionInfo *exception)
227 Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
228 const NoiseType noise_type,ExceptionInfo *exception)
231 <p>A description of each parameter follows:</p>
237 <p>the channel type.</p>
240 <p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p>
243 <p>return any errors or warnings in this structure.</p>
246 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="BlueShiftImage">BlueShiftImage</a></h2>
247 <div class="doc-section">
249 <p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p>
251 <p>The format of the BlueShiftImage method is:</p>
254 Image *BlueShiftImage(const Image *image,const double factor,
255 ExceptionInfo *exception)
258 <p>A description of each parameter follows:</p>
264 <p>the shift factor.</p>
267 <p>return any errors or warnings in this structure.</p>
270 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="CharcoalImage">CharcoalImage</a></h2>
271 <div class="doc-section">
273 <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>
275 <p>The format of the CharcoalImage method is:</p>
278 Image *CharcoalImage(const Image *image,const double radius,
279 const double sigma,ExceptionInfo *exception)
282 <p>A description of each parameter follows:</p>
288 <p>the radius of the pixel neighborhood.</p>
291 <p>the standard deviation of the Gaussian, in pixels.</p>
294 <p>return any errors or warnings in this structure.</p>
297 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ColorizeImage">ColorizeImage</a></h2>
298 <div class="doc-section">
300 <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>
302 <p>The format of the ColorizeImage method is:</p>
305 Image *ColorizeImage(const Image *image,const char *opacity,
306 const PixelPacket colorize,ExceptionInfo *exception)
309 <p>A description of each parameter follows:</p>
315 <p>A character string indicating the level of opacity as a percentage.</p>
318 <p>A color value.</p>
321 <p>return any errors or warnings in this structure.</p>
324 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ColorMatrixImage">ColorMatrixImage</a></h2>
325 <div class="doc-section">
327 <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>
329 <p>The format of the ColorMatrixImage method is:</p>
332 Image *ColorMatrixImage(const Image *image,
333 const KernelInfo *color_matrix,ExceptionInfo *exception)
336 <p>A description of each parameter follows:</p>
341 <h5>color_matrix</h5>
342 <p>the color matrix.</p>
345 <p>return any errors or warnings in this structure.</p>
348 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="FxImage">FxImage</a></h2>
349 <div class="doc-section">
351 <p>FxImage() applies a mathematical expression to the specified image.</p>
353 <p>The format of the FxImage method is:</p>
356 Image *FxImage(const Image *image,const char *expression,
357 ExceptionInfo *exception)
358 Image *FxImageChannel(const Image *image,const ChannelType channel,
359 const char *expression,ExceptionInfo *exception)
362 <p>A description of each parameter follows:</p>
371 <p>A mathematical expression.</p>
374 <p>return any errors or warnings in this structure.</p>
377 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ImplodeImage">ImplodeImage</a></h2>
378 <div class="doc-section">
380 <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>
382 <p>The format of the ImplodeImage method is:</p>
385 Image *ImplodeImage(const Image *image,const double amount,
386 ExceptionInfo *exception)
389 <p>A description of each parameter follows:</p>
391 <h5>implode_image</h5>
392 <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>
398 <p>Define the extent of the implosion.</p>
401 <p>return any errors or warnings in this structure.</p>
404 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="The_MorphImages">The MorphImages</a></h2>
405 <div class="doc-section">
407 <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>
409 <p>The format of the MorphImage method is:</p>
412 Image *MorphImages(const Image *image,const size_t number_frames,
413 ExceptionInfo *exception)
416 <p>A description of each parameter follows:</p>
421 <h5>number_frames</h5>
422 <p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p>
425 <p>return any errors or warnings in this structure.</p>
428 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="PlasmaImage">PlasmaImage</a></h2>
429 <div class="doc-section">
431 <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>
433 <p>The format of the PlasmaImage method is:</p>
436 MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
437 size_t attenuate,size_t depth)
440 <p>A description of each parameter follows:</p>
446 <p> Define the region to apply plasma fractals values.</p>
449 <p>Define the plasma attenuation factor.</p>
452 <p>Limit the plasma recursion depth.</p>
455 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="PolaroidImage">PolaroidImage</a></h2>
456 <div class="doc-section">
458 <p>PolaroidImage() simulates a Polaroid picture.</p>
460 <p>The format of the AnnotateImage method is:</p>
463 Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
464 const double angle,ExceptionInfo exception)
467 <p>A description of each parameter follows:</p>
473 <p>the draw info.</p>
476 <p>Apply the effect along this angle.</p>
479 <p>return any errors or warnings in this structure.</p>
482 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
483 <div class="doc-section">
485 <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>
487 <p>The format of the SepiaToneImage method is:</p>
490 Image *SepiaToneImage(const Image *image,const double threshold,
491 ExceptionInfo *exception)
494 <p>A description of each parameter follows:</p>
500 <p>the tone threshold.</p>
503 <p>return any errors or warnings in this structure.</p>
506 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ShadowImage">ShadowImage</a></h2>
507 <div class="doc-section">
509 <p>ShadowImage() simulates a shadow from the specified image and returns it.</p>
511 <p>The format of the ShadowImage method is:</p>
514 Image *ShadowImage(const Image *image,const double opacity,
515 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
516 ExceptionInfo *exception)
519 <p>A description of each parameter follows:</p>
525 <p>percentage transparency.</p>
528 <p>the standard deviation of the Gaussian, in pixels.</p>
531 <p>the shadow x-offset.</p>
534 <p>the shadow y-offset.</p>
537 <p>return any errors or warnings in this structure.</p>
540 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SketchImage">SketchImage</a></h2>
541 <div class="doc-section">
543 <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>
545 <p>The format of the SketchImage method is:</p>
548 Image *SketchImage(const Image *image,const double radius,
549 const double sigma,const double angle,ExceptionInfo *exception)
552 <p>A description of each parameter follows:</p>
558 <p>the radius of the Gaussian, in pixels, not counting the center pixel.</p>
561 <p>the standard deviation of the Gaussian, in pixels.</p>
564 <p>Apply the effect along this angle.</p>
567 <p>return any errors or warnings in this structure.</p>
570 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SolarizeImage">SolarizeImage</a></h2>
571 <div class="doc-section">
573 <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>
575 <p>The format of the SolarizeImage method is:</p>
578 MagickBooleanType SolarizeImage(Image *image,const double threshold)
581 <p>A description of each parameter follows:</p>
587 <p>Define the extent of the solarization.</p>
590 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SteganoImage">SteganoImage</a></h2>
591 <div class="doc-section">
593 <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>
595 <p>The format of the SteganoImage method is:</p>
598 Image *SteganoImage(const Image *image,Image *watermark,
599 ExceptionInfo *exception)
602 <p>A description of each parameter follows:</p>
608 <p>the watermark image.</p>
611 <p>return any errors or warnings in this structure.</p>
614 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
615 <div class="doc-section">
617 <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>
619 <p>The format of the StereoAnaglyphImage method is:</p>
622 Image *StereoImage(const Image *left_image,const Image *right_image,
623 ExceptionInfo *exception)
624 Image *StereoAnaglyphImage(const Image *left_image,
625 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
626 ExceptionInfo *exception)
629 <p>A description of each parameter follows:</p>
632 <p>the left image.</p>
635 <p>the right image.</p>
638 <p>return any errors or warnings in this structure.</p>
641 <p>amount, in pixels, by which the left image is offset to the right of the right image.</p>
644 <p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p>
648 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SwirlImage">SwirlImage</a></h2>
649 <div class="doc-section">
651 <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>
653 <p>The format of the SwirlImage method is:</p>
656 Image *SwirlImage(const Image *image,double degrees,
657 ExceptionInfo *exception)
660 <p>A description of each parameter follows:</p>
666 <p>Define the tightness of the swirling effect.</p>
669 <p>return any errors or warnings in this structure.</p>
672 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="TintImage">TintImage</a></h2>
673 <div class="doc-section">
675 <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>
677 <p>The format of the TintImage method is:</p>
680 Image *TintImage(const Image *image,const char *opacity,
681 const PixelPacket tint,ExceptionInfo *exception)
684 <p>A description of each parameter follows:</p>
690 <p>A color value used for tinting.</p>
693 <p>A color value used for tinting.</p>
696 <p>return any errors or warnings in this structure.</p>
699 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="VignetteImage">VignetteImage</a></h2>
700 <div class="doc-section">
702 <p>VignetteImage() softens the edges of the image in vignette style.</p>
704 <p>The format of the VignetteImage method is:</p>
707 Image *VignetteImage(const Image *image,const double radius,
708 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
711 <p>A description of each parameter follows:</p>
717 <p>the radius of the pixel neighborhood.</p>
720 <p>the standard deviation of the Gaussian, in pixels.</p>
723 <p>Define the x and y ellipse offset.</p>
726 <p>return any errors or warnings in this structure.</p>
729 <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="WaveImage">WaveImage</a></h2>
730 <div class="doc-section">
732 <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>
734 <p>The format of the WaveImage method is:</p>
737 Image *WaveImage(const Image *image,const double amplitude,
738 const double wave_length,ExceptionInfo *exception)
741 <p>A description of each parameter follows:</p>
746 <h5>amplitude, wave_length</h5>
747 <p>Define the amplitude and wave length of the sine wave.</p>
750 <p>return any errors or warnings in this structure.</p>
757 <span id="linkbar-west"> </span>
\r
758 <span id="linkbar-center">
\r
759 <a href="http://www.imagemagick.org/discourse-server/">Discourse Server</a> •
\r
760 <a href="http://www.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi">Studio</a>
\r
762 <span id="linkbar-east"> </span>
\r
764 <div class="footer">
\r
765 <span id="footer-west">© 1999-2011 ImageMagick Studio LLC</span>
\r
766 <span id="footer-east"> <a href="../http://www.imagemagick.org/script/contact.php">Contact the Wizards</a></span>
\r
768 <div style="clear: both; margin: 0; width: 100%; "></div>
\r
769 <script type="text/javascript">
\r
770 var _gaq = _gaq || [];
\r
771 _gaq.push(['_setAccount', 'UA-17690367-1']);
\r
772 _gaq.push(['_trackPageview']);
\r
775 var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
\r
776 ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
\r
777 var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
\r