Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / ImageMagick / 350dea44cca73cc46ce2183e1851c5b254c7921e / . / www / api / fx.html
blob: 724844b5f0667e7616eb2512f167afbfb2085e99 [file] [log] [blame]
cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
cristy2bd2a982011-02-15 00:52:58 +0000[diff] [blame]3<html version="-//W3C//DTD XHTML 1.1//EN"
4 xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
6 xsi:schemaLocation="http://www.w3.org/1999/xhtml
7 http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]8<head>
cristy3c98a4f2010-08-13 20:09:41 +0000[diff] [blame]9 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
10 <meta name="verify-v1" content="g222frIIxcQTrvDR3NBRUSKP3AnMNoqxOkIniCEkV7U="/>
cristyffb69ed2010-12-25 00:06:48 +0000[diff] [blame]11 <title>ImageMagick: MagickCore, C API for ImageMagick: Add a Special Effect</title>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]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"/>
cristy3c98a4f2010-08-13 20:09:41 +0000[diff] [blame]15 <meta name="Application-name" content="ImageMagick"/>
cristyaf8d6652011-02-04 21:57:45 +0000[diff] [blame]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."/>
cristy3c98a4f2010-08-13 20:09:41 +0000[diff] [blame]17 <meta name="Application-url" content="http://www.imagemagick.org"/>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]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, Swiss, Army, Knife, Image, Processing"/>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]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"/>
cristy4103d562010-12-10 01:38:54 +0000[diff] [blame]26 <meta name="Copyright" content="Copyright (c) 1999-2011 ImageMagick Studio LLC"/>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]27 <meta name="Distribution" content="Global"/>
cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]28 <link rel="icon" href="../../images/wand.png"/>
cristy3c98a4f2010-08-13 20:09:41 +0000[diff] [blame]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"/>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]31 <link rel="stylesheet" href="http://www.google.com/cse/style/look/default.css" type="text/css" />
cristy3c98a4f2010-08-13 20:09:41 +0000[diff] [blame]32 <style type="text/css" media="all">
33 @import url("../../www/magick.css");
34 </style>
cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]35 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
cristy361f4662010-12-31 23:02:52 +0000[diff] [blame]36 <script type="text/javascript" src="../fancybox/jquery.fancybox-1.3.4.pack.js"></script>
37 <link rel="stylesheet" type="text/css" href="../fancybox/jquery.fancybox-1.3.4.css" media="screen" />
38 <script type="text/javascript">
39 $(document).ready(function() {
40 $("a[href$=.jpg],a[href$=.png],a[href$=.gif]").fancybox({
41 'transitionIn' : 'elastic',
42 'transitionOut' : 'elastic',
43 'overlayShow' : false,
44 'opacity' : true
45 });
46 });
47 </script>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]48</head>
49
50<body id="www-imagemagick-org">
51<div class="titlebar">
52<a href="../../index.html">
53 <img src="../../images/script.png" alt="[ImageMagick]"
54 style="width: 350px; height: 60px; margin: 28px auto; float: left;" /></a>
55<a href="http://www.networkredux.com">
56 <img src="../../images/networkredux.png" alt="[sponsor]"
cristy52923442011-01-15 22:54:31 +0000[diff] [blame]57 style="margin-top: 42px; border: 0px; float: left;" /></a>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]58<a href="http://www.imagemagick.org/discourse-server/">
cristyaf8d6652011-02-04 21:57:45 +0000[diff] [blame]59 <img src="../../images/logo.jpg"
60 alt="ImageMagick Logo"
cristy178edaf2011-01-23 03:42:39 +0000[diff] [blame]61 style="width: 123px; height: 118px; border: 0px; float: right;" /></a>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]62<a href="../../index.html">
cristyaf8d6652011-02-04 21:57:45 +0000[diff] [blame]63 <img src="../../images/sprite.jpg"
64 alt="ImageMagick Sprite"
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]65 style="width: 114px; height: 118px; border: 0px; float: right;" /></a>
66</div>
67
cristyce69bb02010-07-27 19:49:46 +0000[diff] [blame]68<div class="westbar">
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]69
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]70<div class="menu">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]71 <a title="About ImageMagick" href="../../index.html">About ImageMagick</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]72</div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]73<div class="sep"></div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]74<div class="menu">
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]75 <a title="Binary Releases" href="../../www/binary-releases.html">Binary Releases</a>
76</div>
77<div class="sub">
78 <a title="Binary Release: Unix" href="../../www/binary-releases.html#unix">Unix</a>
79</div>
80<div class="sub">
81 <a title="Binary Release: MacOS X" href="../../www/binary-releases.html#macosx">Mac OS X</a>
82</div>
83<div class="sub">
84 <a title="Binary Release: Windows" href="../../www/binary-releases.html#windows">Windows</a>
85</div>
86<div class="sep"></div>
87<div class="menu">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]88 <a title="Command-line Tools" href="../../www/command-line-tools.html">Command-line Tools</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]89</div>
90<div class="sub">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]91 <a title="Command-line Tools: Processing" href="../../www/command-line-processing.html">Processing</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]92</div>
93<div class="sub">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]94 <a title="Command-line Tools: Options" href="../../www/command-line-options.html">Options</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]95</div>
96<div class="sub">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]97 <a title="Command-line Tools: Usage" href="http://www.imagemagick.org/Usage/">Usage</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]98</div>
99<div class="menu">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]100 <a title="Program Interfaces" href="../../www/api.html">Program Interfaces</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]101</div>
102<div class="sub">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]103 <a title="Program Interface: MagickWand" href="../../www/magick-wand.html">MagickWand</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]104</div>
105<div class="sub">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]106 <a title="Program Interface: MagickCore" href="../../www/magick-core.html">MagickCore</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]107</div>
108<div class="sub">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]109 <a title="Program Interface: PerlMagick" href="../../www/perl-magick.html">PerlMagick</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]110</div>
111<div class="sub">
cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]112 <a title="Program Interface: Magick++" href="../../www/magick++.html">Magick++</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]113</div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]114<div class="sep"></div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]115<div class="menu">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]116 <a title="Install from Source" href="../../www/install-source.html">Install from Source</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]117</div>
118<div class="sub">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]119 <a title="Install from Source: Unix" href="../../www/install-source.html#unix">Unix</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]120</div>
121<div class="sub">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]122 <a title="Install from Source: Windows" href="../../www/install-source.html#windows">Windows</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]123 </div>
124<div class="menu">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]125 <a title="Resources" href="../../www/resources.html">Resources</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]126</div>
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]127<div class="menu">
128 <a title="Architecture" href="../../www/architecture.html">Architecture</a>
129</div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]130<div class="menu">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]131 <a title="Download" href="../../www/download.html">Download</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]132</div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]133<div class="sep"></div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]134<div class="menu">
cristy52923442011-01-15 22:54:31 +0000[diff] [blame]135 <a title="Search" href="../../www/search.html">Search</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]136</div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]137<div class="sep"></div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]138<div class="menu">
cristyffb69ed2010-12-25 00:06:48 +0000[diff] [blame]139 <a title="Site Map" href="../../www/sitemap.html">Site Map</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]140</div>
141<div class="sub">
cristyffb69ed2010-12-25 00:06:48 +0000[diff] [blame]142 <a title="Site Map: Links" href="../../www/links.html">Links</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]143</div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]144<div class="sep"></div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]145<div class="menu">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]146 <a title="Sponsors" href="../../www/sponsors.html">Sponsors:</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]147
148<div class="sponsbox">
cristy178edaf2011-01-23 03:42:39 +0000[diff] [blame]149<div class="sponsor">
cristyaf8d6652011-02-04 21:57:45 +0000[diff] [blame]150 <a title="Sponsor: Best Web Hosting" href="http://webhostinggeeks.com">Best Web Hosting</a><!-- 201110010720 -->
151</div>
152<div class="sponsor">
153 <a title="Sponsor: Web Hosting Ratings" href="http://webhostingrating.com">Web Hosting Ratings</a><!-- 201110010720 -->
154</div>
155<div class="sponsor">
cristy2bd2a982011-02-15 00:52:58 +0000[diff] [blame]156 <a title="Sponsor: Druckerei" href="http://www.allesdruck.de">Druckerei</a><!-- 201107010240 r.leo -->
cristy178edaf2011-01-23 03:42:39 +0000[diff] [blame]157</div>
cristyec6b4752011-01-08 03:16:23 +0000[diff] [blame]158<div class="sponsor">
cristy52923442011-01-15 22:54:31 +0000[diff] [blame]159 <a title="Sponsor: Web Hosting" href="http://www.bodhost.com/hosting.shtml">Web Hosting</a><!-- 201104010090 -->
cristy7d52cd62010-10-01 17:26:59 +0000[diff] [blame]160</div>
161<div class="sponsor">
cristyc5baf4f2010-08-31 15:05:33 +0000[diff] [blame]162 <a title="Sponsor: Image Converter" href="http://www.batchphoto.com">Image Converter</a><!-- 201103010900 Bits Coffee-->
163</div>
164<div class="sponsor">
cristy851dbce2010-08-06 21:40:00 +0000[diff] [blame]165 <a title="Sponsor: Flyer drucken" href="http://www.online-druck.biz">Flyer drucken</a><!-- 201109010900 Floeter-->
166</div>
cristyec6b4752011-01-08 03:16:23 +0000[diff] [blame]167<div class="sponsor">
cristy178edaf2011-01-23 03:42:39 +0000[diff] [blame]168 <a title="Sponsor: Druckerei" href="http://print24.com/de/">Druckerei</a><!-- 201110010720 -->
169</div>
170<div class="sponsor">
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]171 <a title="Sponsor: alaTest.com" href="http://alatest.com">alaTest.com</a><!-- 20110801000300 -->
cristyec6b4752011-01-08 03:16:23 +0000[diff] [blame]172</div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]173</div>
174</div>
cristyce69bb02010-07-27 19:49:46 +0000[diff] [blame]175</div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]176
cristyce69bb02010-07-27 19:49:46 +0000[diff] [blame]177<div class="eastbar">
178 <script type="text/javascript">
179 <!--
180 google_ad_client = "pub-3129977114552745";
cristyce69bb02010-07-27 19:49:46 +0000[diff] [blame]181 google_ad_slot = "0574824969";
182 google_ad_width = 160;
183 google_ad_height = 600;
184 //-->
185 </script>
186 <script type="text/javascript"
187 src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
188 </script>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]189</div>
190
191<div class="main">
192
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]193<h1>Module fx Methods</h1>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]194<p class="navigation-index">[<a href="#AddNoiseImage">AddNoiseImage</a> &bull; <a href="#BlueShiftImage">BlueShiftImage</a> &bull; <a href="#CharcoalImage">CharcoalImage</a> &bull; <a href="#ColorizeImage">ColorizeImage</a> &bull; <a href="#ColorMatrixImage">ColorMatrixImage</a> &bull; <a href="#FxImage">FxImage</a> &bull; <a href="#ImplodeImage">ImplodeImage</a> &bull; <a href="#The MorphImages">The MorphImages</a> &bull; <a href="#PlasmaImage">PlasmaImage</a> &bull; <a href="#PolaroidImage">PolaroidImage</a> &bull; <a href="#MagickSepiaToneImage">MagickSepiaToneImage</a> &bull; <a href="#ShadowImage">ShadowImage</a> &bull; <a href="#SketchImage">SketchImage</a> &bull; <a href="#SolarizeImage">SolarizeImage</a> &bull; <a href="#SteganoImage">SteganoImage</a> &bull; <a href="#StereoAnaglyphImage">StereoAnaglyphImage</a> &bull; <a href="#SwirlImage">SwirlImage</a> &bull; <a href="#TintImage">TintImage</a> &bull; <a href="#VignetteImage">VignetteImage</a> &bull; <a href="#WaveImage">WaveImage</a>]</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]195
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]196<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="AddNoiseImage">AddNoiseImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]197<div class="doc-section">
198
199<p>AddNoiseImage() adds random noise to the image.</p>
200
201<p>The format of the AddNoiseImage method is:</p>
202
203<pre class="code">
204 Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
205 ExceptionInfo *exception)
206 Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
207 const NoiseType noise_type,ExceptionInfo *exception)
208</pre>
209
210<p>A description of each parameter follows:</p>
211
212<h5>image</h5>
213<p>the image.</p>
214
215<h5>channel</h5>
216<p>the channel type.</p>
217
218<h5>noise_type</h5>
219<p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p>
220
221<h5>exception</h5>
222<p>return any errors or warnings in this structure.</p>
223
224 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]225<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="BlueShiftImage">BlueShiftImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]226<div class="doc-section">
227
228<p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p>
229
230<p>The format of the BlueShiftImage method is:</p>
231
232<pre class="code">
233 Image *BlueShiftImage(const Image *image,const double factor,
234 ExceptionInfo *exception)
235</pre>
236
237<p>A description of each parameter follows:</p>
238
239<h5>image</h5>
240<p>the image.</p>
241
242<h5>factor</h5>
243<p>the shift factor.</p>
244
245<h5>exception</h5>
246<p>return any errors or warnings in this structure.</p>
247
248 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]249<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="CharcoalImage">CharcoalImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]250<div class="doc-section">
251
252<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>
253
254<p>The format of the CharcoalImage method is:</p>
255
256<pre class="code">
257 Image *CharcoalImage(const Image *image,const double radius,
258 const double sigma,ExceptionInfo *exception)
259</pre>
260
261<p>A description of each parameter follows:</p>
262
263<h5>image</h5>
264<p>the image.</p>
265
266<h5>radius</h5>
267<p>the radius of the pixel neighborhood.</p>
268
269<h5>sigma</h5>
270<p>the standard deviation of the Gaussian, in pixels.</p>
271
272<h5>exception</h5>
273<p>return any errors or warnings in this structure.</p>
274
275 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]276<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ColorizeImage">ColorizeImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]277<div class="doc-section">
278
279<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>
280
281<p>The format of the ColorizeImage method is:</p>
282
283<pre class="code">
284 Image *ColorizeImage(const Image *image,const char *opacity,
285 const PixelPacket colorize,ExceptionInfo *exception)
286</pre>
287
288<p>A description of each parameter follows:</p>
289
290<h5>image</h5>
291<p>the image.</p>
292
293<h5>opacity</h5>
294<p>A character string indicating the level of opacity as a percentage.</p>
295
296<h5>colorize</h5>
297<p>A color value.</p>
298
299<h5>exception</h5>
300<p>return any errors or warnings in this structure.</p>
301
302 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]303<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ColorMatrixImage">ColorMatrixImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]304<div class="doc-section">
305
306<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>
307
308<p>The format of the ColorMatrixImage method is:</p>
309
310<pre class="code">
311 Image *ColorMatrixImage(const Image *image,
312 const KernelInfo *color_matrix,ExceptionInfo *exception)
313</pre>
314
315<p>A description of each parameter follows:</p>
316
317<h5>image</h5>
318<p>the image.</p>
319
320<h5>color_matrix</h5>
321<p>the color matrix.</p>
322
323<h5>exception</h5>
324<p>return any errors or warnings in this structure.</p>
325
326 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]327<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="FxImage">FxImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]328<div class="doc-section">
329
330<p>FxImage() applies a mathematical expression to the specified image.</p>
331
332<p>The format of the FxImage method is:</p>
333
334<pre class="code">
335 Image *FxImage(const Image *image,const char *expression,
336 ExceptionInfo *exception)
337 Image *FxImageChannel(const Image *image,const ChannelType channel,
338 const char *expression,ExceptionInfo *exception)
339</pre>
340
341<p>A description of each parameter follows:</p>
342
343<h5>image</h5>
344<p>the image.</p>
345
346<h5>channel</h5>
347<p>the channel.</p>
348
349<h5>expression</h5>
350<p>A mathematical expression.</p>
351
352<h5>exception</h5>
353<p>return any errors or warnings in this structure.</p>
354
355 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]356<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ImplodeImage">ImplodeImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]357<div class="doc-section">
358
359<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>
360
361<p>The format of the ImplodeImage method is:</p>
362
363<pre class="code">
364 Image *ImplodeImage(const Image *image,const double amount,
365 ExceptionInfo *exception)
366</pre>
367
368<p>A description of each parameter follows:</p>
369
370<h5>implode_image</h5>
371<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>
372
373<h5>image</h5>
374<p>the image.</p>
375
376<h5>amount</h5>
377<p>Define the extent of the implosion.</p>
378
379<h5>exception</h5>
380<p>return any errors or warnings in this structure.</p>
381
382 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]383<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="The_MorphImages">The MorphImages</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]384<div class="doc-section">
385
386<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>
387
388<p>The format of the MorphImage method is:</p>
389
390<pre class="code">
391 Image *MorphImages(const Image *image,const size_t number_frames,
392 ExceptionInfo *exception)
393</pre>
394
395<p>A description of each parameter follows:</p>
396
397<h5>image</h5>
398<p>the image.</p>
399
400<h5>number_frames</h5>
401<p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p>
402
403<h5>exception</h5>
404<p>return any errors or warnings in this structure.</p>
405
406 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]407<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="PlasmaImage">PlasmaImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]408<div class="doc-section">
409
410<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>
411
412<p>The format of the PlasmaImage method is:</p>
413
414<pre class="code">
415 MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
416 size_t attenuate,size_t depth)
417</pre>
418
419<p>A description of each parameter follows:</p>
420
421<h5>image</h5>
422<p>the image.</p>
423
424<h5>segment</h5>
425<p> Define the region to apply plasma fractals values.</p>
426
427<h5>attenuate</h5>
428<p>Define the plasma attenuation factor.</p>
429
430<h5>depth</h5>
431<p>Limit the plasma recursion depth.</p>
432
433 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]434<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="PolaroidImage">PolaroidImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]435<div class="doc-section">
436
437<p>PolaroidImage() simulates a Polaroid picture.</p>
438
439<p>The format of the AnnotateImage method is:</p>
440
441<pre class="code">
442 Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
443 const double angle,ExceptionInfo exception)
444</pre>
445
446<p>A description of each parameter follows:</p>
447
448<h5>image</h5>
449<p>the image.</p>
450
451<h5>draw_info</h5>
452<p>the draw info.</p>
453
454<h5>angle</h5>
455<p>Apply the effect along this angle.</p>
456
457<h5>exception</h5>
458<p>return any errors or warnings in this structure.</p>
459
460 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]461<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]462<div class="doc-section">
463
464<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>
465
466<p>The format of the SepiaToneImage method is:</p>
467
468<pre class="code">
469 Image *SepiaToneImage(const Image *image,const double threshold,
470 ExceptionInfo *exception)
471</pre>
472
473<p>A description of each parameter follows:</p>
474
475<h5>image</h5>
476<p>the image.</p>
477
478<h5>threshold</h5>
479<p>the tone threshold.</p>
480
481<h5>exception</h5>
482<p>return any errors or warnings in this structure.</p>
483
484 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]485<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ShadowImage">ShadowImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]486<div class="doc-section">
487
488<p>ShadowImage() simulates a shadow from the specified image and returns it.</p>
489
490<p>The format of the ShadowImage method is:</p>
491
492<pre class="code">
493 Image *ShadowImage(const Image *image,const double opacity,
494 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
495 ExceptionInfo *exception)
496</pre>
497
498<p>A description of each parameter follows:</p>
499
500<h5>image</h5>
501<p>the image.</p>
502
503<h5>opacity</h5>
504<p>percentage transparency.</p>
505
506<h5>sigma</h5>
507<p>the standard deviation of the Gaussian, in pixels.</p>
508
509<h5>x_offset</h5>
510<p>the shadow x-offset.</p>
511
512<h5>y_offset</h5>
513<p>the shadow y-offset.</p>
514
515<h5>exception</h5>
516<p>return any errors or warnings in this structure.</p>
517
518 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]519<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SketchImage">SketchImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]520<div class="doc-section">
521
522<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
524<p>The format of the SketchImage method is:</p>
525
526<pre class="code">
527 Image *SketchImage(const Image *image,const double radius,
528 const double sigma,const double angle,ExceptionInfo *exception)
529</pre>
530
531<p>A description of each parameter follows:</p>
532
533<h5>image</h5>
534<p>the image.</p>
535
536<h5>radius</h5>
537<p>the radius of the Gaussian, in pixels, not counting the center pixel.</p>
538
539<h5>sigma</h5>
540<p>the standard deviation of the Gaussian, in pixels.</p>
541
542<h5>angle</h5>
543<p>Apply the effect along this angle.</p>
544
545<h5>exception</h5>
546<p>return any errors or warnings in this structure.</p>
547
548 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]549<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SolarizeImage">SolarizeImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]550<div class="doc-section">
551
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>
553
554<p>The format of the SolarizeImage method is:</p>
555
556<pre class="code">
557 MagickBooleanType SolarizeImage(Image *image,const double threshold)
558</pre>
559
560<p>A description of each parameter follows:</p>
561
562<h5>image</h5>
563<p>the image.</p>
564
565<h5>threshold</h5>
566<p>Define the extent of the solarization.</p>
567
568 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]569<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SteganoImage">SteganoImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]570<div class="doc-section">
571
572<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>
573
574<p>The format of the SteganoImage method is:</p>
575
576<pre class="code">
577 Image *SteganoImage(const Image *image,Image *watermark,
578 ExceptionInfo *exception)
579</pre>
580
581<p>A description of each parameter follows:</p>
582
583<h5>image</h5>
584<p>the image.</p>
585
586<h5>watermark</h5>
587<p>the watermark image.</p>
588
589<h5>exception</h5>
590<p>return any errors or warnings in this structure.</p>
591
592 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]593<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]594<div class="doc-section">
595
596<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>
597
598<p>The format of the StereoAnaglyphImage method is:</p>
599
600<pre class="code">
601 Image *StereoImage(const Image *left_image,const Image *right_image,
602 ExceptionInfo *exception)
603 Image *StereoAnaglyphImage(const Image *left_image,
604 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
605 ExceptionInfo *exception)
606</pre>
607
608<p>A description of each parameter follows:</p>
609
610<h5>left_image</h5>
611<p>the left image.</p>
612
613<h5>right_image</h5>
614<p>the right image.</p>
615
616<h5>exception</h5>
617<p>return any errors or warnings in this structure.</p>
618
619<h5>x_offset</h5>
620<p>amount, in pixels, by which the left image is offset to the right of the right image.</p>
621
622<h5>y_offset</h5>
623<p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p>
624
625
626 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]627<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SwirlImage">SwirlImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]628<div class="doc-section">
629
630<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>
631
632<p>The format of the SwirlImage method is:</p>
633
634<pre class="code">
635 Image *SwirlImage(const Image *image,double degrees,
636 ExceptionInfo *exception)
637</pre>
638
639<p>A description of each parameter follows:</p>
640
641<h5>image</h5>
642<p>the image.</p>
643
644<h5>degrees</h5>
645<p>Define the tightness of the swirling effect.</p>
646
647<h5>exception</h5>
648<p>return any errors or warnings in this structure.</p>
649
650 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]651<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="TintImage">TintImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]652<div class="doc-section">
653
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>
655
656<p>The format of the TintImage method is:</p>
657
658<pre class="code">
659 Image *TintImage(const Image *image,const char *opacity,
660 const PixelPacket tint,ExceptionInfo *exception)
661</pre>
662
663<p>A description of each parameter follows:</p>
664
665<h5>image</h5>
666<p>the image.</p>
667
668<h5>opacity</h5>
669<p>A color value used for tinting.</p>
670
671<h5>tint</h5>
672<p>A color value used for tinting.</p>
673
674<h5>exception</h5>
675<p>return any errors or warnings in this structure.</p>
676
677 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]678<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="VignetteImage">VignetteImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]679<div class="doc-section">
680
681<p>VignetteImage() softens the edges of the image in vignette style.</p>
682
683<p>The format of the VignetteImage method is:</p>
684
685<pre class="code">
686 Image *VignetteImage(const Image *image,const double radius,
687 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
688</pre>
689
690<p>A description of each parameter follows:</p>
691
692<h5>image</h5>
693<p>the image.</p>
694
695<h5>radius</h5>
696<p>the radius of the pixel neighborhood.</p>
697
698<h5>sigma</h5>
699<p>the standard deviation of the Gaussian, in pixels.</p>
700
701<h5>x, y</h5>
702<p>Define the x and y ellipse offset.</p>
703
704<h5>exception</h5>
705<p>return any errors or warnings in this structure.</p>
706
707 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame^]708<h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="WaveImage">WaveImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]709<div class="doc-section">
710
711<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>
712
713<p>The format of the WaveImage method is:</p>
714
715<pre class="code">
716 Image *WaveImage(const Image *image,const double amplitude,
717 const double wave_length,ExceptionInfo *exception)
718</pre>
719
720<p>A description of each parameter follows:</p>
721
722<h5>image</h5>
723<p>the image.</p>
724
725<h5>amplitude, wave_length</h5>
726<p>Define the amplitude and wave length of the sine wave.</p>
727
728<h5>exception</h5>
729<p>return any errors or warnings in this structure.</p>
730
731 </div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]732
733</div>
734
735<div id="linkbar">
cristyce69bb02010-07-27 19:49:46 +0000[diff] [blame]736 <span id="linkbar-west">&nbsp;</span>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]737 <span id="linkbar-center">
738 <a href="http://www.imagemagick.org/discourse-server/">Discourse Server</a> &bull;
cristya8902942010-07-30 00:49:52 +0000[diff] [blame]739 <a href="http://www.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi">Studio</a>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]740 </span>
741 <span id="linkbar-east">&nbsp;</span>
742 </div>
743 <div class="footer">
cristy4103d562010-12-10 01:38:54 +0000[diff] [blame]744 <span id="footer-west">&copy; 1999-2011 ImageMagick Studio LLC</span>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]745 <span id="footer-east"> <a href="../http://www.imagemagick.org/script/contact.php">Contact the Wizards</a></span>
746 </div>
747 <div style="clear: both; margin: 0; width: 100%; "></div>
cristya8902942010-07-30 00:49:52 +0000[diff] [blame]748 <script type="text/javascript">
749 var _gaq = _gaq || [];
750 _gaq.push(['_setAccount', 'UA-17690367-1']);
751 _gaq.push(['_trackPageview']);
752
753 (function() {
754 var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
755 ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
756 var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
757 })();
758 </script>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]759</body>
760</html>