| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
|
| "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
| <html version="-//W3C//DTD XHTML 1.1//EN"
|
| xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
|
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
| xsi:schemaLocation="http://www.w3.org/1999/xhtml
|
| http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
|
| <head>
|
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
|
| <meta name="verify-v1" content="g222frIIxcQTrvDR3NBRUSKP3AnMNoqxOkIniCEkV7U="/>
|
| <title>ImageMagick: MagickCore, C API for ImageMagick: Image Statistics</title> |
| <meta http-equiv="Content-Language" content="en-US"/> |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> |
| <meta http-equiv="Reply-to" content="magick-users@imagemagick.org"/> |
| <meta name="Application-name" content="ImageMagick"/> |
| <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."/> |
| <meta name="Application-url" content="http://www.imagemagick.org"/> |
| <meta name="Generator" content="PHP"/> |
| <meta name="Keywords" content="magickcore, c, api, for, imagemagick:, image, statistics, ImageMagick, ImageMagic, MagickCore, MagickWand, PerlMagick, Magick++, RMagick, PythonMagick, JMagick, TclMagick, Image, Magick, Magic, Wand, ImageMagickObject, Swiss, Army, Knife, Image, Processing"/> |
| <meta name="Rating" content="GENERAL"/> |
| <meta name="Robots" content="INDEX, FOLLOW"/> |
| <meta name="Generator" content="ImageMagick Studio LLC"/> |
| <meta name="Author" content="ImageMagick Studio LLC"/> |
| <meta name="Revisit-after" content="2 DAYS"/> |
| <meta name="Resource-type" content="document"/> |
| <meta name="Copyright" content="Copyright (c) 1999-2011 ImageMagick Studio LLC"/> |
| <meta name="Distribution" content="Global"/> |
| <link rel="icon" href="../../images/wand.png"/> |
| <link rel="shortcut icon" href="../../images/wand.ico" type="images/x-icon"/> |
| <link rel="meta" type="application/rdf+xml" title="ICI" href="http://imagemagick.org/ici.rdf"/>
|
| <link rel="stylesheet" href="http://www.google.com/cse/style/look/default.css" type="text/css" />
|
| <style type="text/css" media="all">
|
| @import url("../../www/magick.css");
|
| </style>
|
| <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
|
| <script type="text/javascript" src="../fancybox/jquery.fancybox-1.3.4.pack.js"></script>
|
| <link rel="stylesheet" type="text/css" href="../fancybox/jquery.fancybox-1.3.4.css" media="screen" />
|
| <script type="text/javascript">
|
| $(document).ready(function() {
|
| $("a[href$=.jpg],a[href$=.png],a[href$=.gif]").fancybox({
|
| 'transitionIn' : 'elastic',
|
| 'transitionOut' : 'elastic',
|
| 'overlayShow' : false,
|
| 'opacity' : true
|
| });
|
| });
|
| </script>
|
| </head>
|
|
|
| <body id="www-imagemagick-org">
|
| <div class="titlebar">
|
| <a href="../../index.html">
|
| <img src="../../images/script.png" alt="[ImageMagick]"
|
| style="width: 350px; height: 60px; margin: 28px auto; float: left;" /></a>
|
| <a href="http://www.networkredux.com">
|
| <img src="../../images/networkredux.png" alt="[sponsor]"
|
| style="margin-top: 42px; border: 0px; float: left;" /></a>
|
| <a href="http://www.imagemagick.org/discourse-server/">
|
| <img src="../../images/logo.jpg"
|
| alt="ImageMagick Logo"
|
| style="width: 123px; height: 118px; border: 0px; float: right;" /></a>
|
| <a href="../../index.html">
|
| <img src="../../images/sprite.jpg"
|
| alt="ImageMagick Sprite"
|
| style="width: 114px; height: 118px; border: 0px; float: right;" /></a>
|
| </div>
|
|
|
| <div class="westbar">
|
|
|
| <div class="menu"> |
| <a title="About ImageMagick" href="../../index.html">About ImageMagick</a> |
| </div> |
| <div class="sep"></div>
|
| <div class="menu"> |
| <a title="Binary Releases" href="../../www/binary-releases.html">Binary Releases</a> |
| </div> |
| <div class="sub"> |
| <a title="Binary Release: Unix" href="../../www/binary-releases.html#unix">Unix</a> |
| </div> |
| <div class="sub"> |
| <a title="Binary Release: MacOS X" href="../../www/binary-releases.html#macosx">Mac OS X</a> |
| </div> |
| <div class="sub"> |
| <a title="Binary Release: iPhone" href="../../www/binary-releases.html#iPhone">iPhone</a> |
| </div> |
| <div class="sub"> |
| <a title="Binary Release: Windows" href="../../www/binary-releases.html#windows">Windows</a> |
| </div> |
| <div class="sep"></div>
|
| <div class="menu"> |
| <a title="Command-line Tools" href="../../www/command-line-tools.html">Command-line Tools</a> |
| </div> |
| <div class="sub"> |
| <a title="Command-line Tools: Processing" href="../../www/command-line-processing.html">Processing</a> |
| </div> |
| <div class="sub"> |
| <a title="Command-line Tools: Options" href="../../www/command-line-options.html">Options</a> |
| </div> |
| <div class="sub"> |
| <a title="Command-line Tools: Usage" href="http://www.imagemagick.org/Usage/">Usage</a> |
| </div> |
| <div class="menu"> |
| <a title="Program Interfaces" href="../../www/api.html">Program Interfaces</a> |
| </div> |
| <div class="sub"> |
| <a title="Program Interface: MagickWand" href="../../www/magick-wand.html">MagickWand</a> |
| </div> |
| <div class="sub"> |
| <a title="Program Interface: MagickCore" href="../../www/magick-core.html">MagickCore</a> |
| </div> |
| <div class="sub"> |
| <a title="Program Interface: PerlMagick" href="../../www/perl-magick.html">PerlMagick</a> |
| </div> |
| <div class="sub"> |
| <a title="Program Interface: Magick++" href="../../www/magick++.html">Magick++</a> |
| </div> |
| <div class="sep"></div>
|
| <div class="menu"> |
| <a title="Install from Source" href="../../www/install-source.html">Install from Source</a> |
| </div> |
| <div class="sub"> |
| <a title="Install from Source: Unix" href="../../www/install-source.html#unix">Unix</a> |
| </div> |
| <div class="sub"> |
| <a title="Install from Source: Windows" href="../../www/install-source.html#windows">Windows</a> |
| </div> |
| <div class="menu"> |
| <a title="Resources" href="../../www/resources.html">Resources</a> |
| </div> |
| <div class="menu"> |
| <a title="Architecture" href="../../www/architecture.html">Architecture</a> |
| </div> |
| <div class="menu"> |
| <a title="Download" href="../../www/download.html">Download</a> |
| </div> |
| <div class="sep"></div>
|
| <div class="menu"> |
| <a title="Search" href="../../www/search.html">Search</a> |
| </div> |
| <div class="sep"></div>
|
| <div class="menu"> |
| <a title="Site Map" href="../../www/sitemap.html">Site Map</a> |
| </div> |
| <div class="sub"> |
| <a title="Site Map: Links" href="../../www/links.html">Links</a> |
| </div> |
| <div class="sep"></div>
|
| <div class="menu"> |
| <a title="Sponsors" href="../../www/sponsors.html">Sponsors:</a> |
| |
| <div class="sponsbox"> |
| <div class="sponsor"> |
| <a title="Sponsor: Hotel München" href="http://www.messehotel-erb-muenchen.de">Hotel München</a><!-- 201111010450 cerb --> |
| </div> |
| <div class="sponsor"> |
| <a title="Sponsor: Website Hosting" href="http://www.hostreviewgeeks.com">Website Hosting</a><!-- 201106010090 alexanian media --> |
| </div> |
| <div class="sponsor"> |
| <a title="Sponsor: Druckerei" href="http://www.allesdruck.de">Druckerei</a><!-- 201107010240 r.leo --> |
| </div> |
| <div class="sponsor"> |
| <a title="Sponsor: Best Web Hosting" href="http://webhostinggeeks.com">Best Web Hosting</a><!-- 201110010720 --> |
| </div> |
| <div class="sponsor"> |
| <a title="Sponsor: Web Hosting Ratings" href="http://webhostingrating.com">Web Hosting Ratings</a><!-- 201110010720 --> |
| </div> |
| <div class="sponsor"> |
| <a title="Sponsor: Flyer drucken" href="http://www.online-druck.biz">Flyer drucken</a><!-- 201109010900 Floeter--> |
| </div> |
| <div class="sponsor"> |
| <a title="Sponsor: Web Hosting" href="http://www.bodhost.com/hosting.shtml">Web Hosting</a><!-- 201104010090 --> |
| </div> |
| <div class="sponsor"> |
| <a title="Sponsor: Druckerei" href="http://print24.com/de/">Druckerei</a><!-- 201110010720 --> |
| </div> |
| <div class="sponsor"> |
| <a title="Sponsor: Fototapete" href=" http://www.allesdruck.de/Fototapete-Tapetendruck,category,8830.html">Fototapete</a><!-- 20110701000080 a-o.de --> |
| </div> |
| </div> |
| </div> |
| </div>
|
|
|
| <div class="eastbar">
|
| <script type="text/javascript">
|
| <!--
|
| google_ad_client = "pub-3129977114552745";
|
| google_ad_slot = "0574824969";
|
| google_ad_width = 160;
|
| google_ad_height = 600;
|
| //-->
|
| </script>
|
| <script type="text/javascript"
|
| src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
|
| </script>
|
| </div>
|
|
|
| <div class="main">
|
|
|
| <h1>Module statistic Methods</h1> |
| <p class="navigation-index">[<a href="#EvaluateImage">EvaluateImage</a> • <a href="#FunctionImage">FunctionImage</a> • <a href="#GetImageChannelMean">GetImageChannelMean</a> • <a href="#GetImageChannelKurtosis">GetImageChannelKurtosis</a> • <a href="#GetImageChannelRange">GetImageChannelRange</a> • <a href="#GetImageChannelStatistics">GetImageChannelStatistics</a>]</p> |
| |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/statistic_8c.html" id="EvaluateImage">EvaluateImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>EvaluateImage() applies a value to the image with an arithmetic, relational, or logical operator to an image. Use these operations to lighten or darken an image, to increase or decrease contrast in an image, or to produce the "negative" of an image.</p> |
| |
| <p>The format of the EvaluateImageChannel method is:</p> |
| |
| <pre class="code"> |
| MagickBooleanType EvaluateImage(Image *image, |
| const MagickEvaluateOperator op,const double value, |
| ExceptionInfo *exception) |
| MagickBooleanType EvaluateImages(Image *images, |
| const MagickEvaluateOperator op,const double value, |
| ExceptionInfo *exception) |
| MagickBooleanType EvaluateImageChannel(Image *image, |
| const ChannelType channel,const MagickEvaluateOperator op, |
| const double value,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>channel</h5> |
| <p>the channel.</p> |
| |
| <h5>op</h5> |
| <p>A channel op.</p> |
| |
| <h5>value</h5> |
| <p>A value value.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/statistic_8c.html" id="FunctionImage">FunctionImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>FunctionImage() applies a value to the image with an arithmetic, relational, or logical operator to an image. Use these operations to lighten or darken an image, to increase or decrease contrast in an image, or to produce the "negative" of an image.</p> |
| |
| <p>The format of the FunctionImageChannel method is:</p> |
| |
| <pre class="code"> |
| MagickBooleanType FunctionImage(Image *image, |
| const MagickFunction function,const ssize_t number_parameters, |
| const double *parameters,ExceptionInfo *exception) |
| MagickBooleanType FunctionImageChannel(Image *image, |
| const ChannelType channel,const MagickFunction function, |
| const ssize_t number_parameters,const double *argument, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>channel</h5> |
| <p>the channel.</p> |
| |
| <h5>function</h5> |
| <p>A channel function.</p> |
| |
| <h5>parameters</h5> |
| <p>one or more parameters.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/statistic_8c.html" id="GetImageChannelMean">GetImageChannelMean</a></h2> |
| <div class="doc-section"> |
| |
| <p>GetImageChannelMean() returns the mean and standard deviation of one or more image channels.</p> |
| |
| <p>The format of the GetImageChannelMean method is:</p> |
| |
| <pre class="code"> |
| MagickBooleanType GetImageChannelMean(const Image *image, |
| const ChannelType channel,double *mean,double *standard_deviation, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>channel</h5> |
| <p>the channel.</p> |
| |
| <h5>mean</h5> |
| <p>the average value in the channel.</p> |
| |
| <h5>standard_deviation</h5> |
| <p>the standard deviation of the channel.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/statistic_8c.html" id="GetImageChannelKurtosis">GetImageChannelKurtosis</a></h2> |
| <div class="doc-section"> |
| |
| <p>GetImageChannelKurtosis() returns the kurtosis and skewness of one or more image channels.</p> |
| |
| <p>The format of the GetImageChannelKurtosis method is:</p> |
| |
| <pre class="code"> |
| MagickBooleanType GetImageChannelKurtosis(const Image *image, |
| const ChannelType channel,double *kurtosis,double *skewness, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>channel</h5> |
| <p>the channel.</p> |
| |
| <h5>kurtosis</h5> |
| <p>the kurtosis of the channel.</p> |
| |
| <h5>skewness</h5> |
| <p>the skewness of the channel.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/statistic_8c.html" id="GetImageChannelRange">GetImageChannelRange</a></h2> |
| <div class="doc-section"> |
| |
| <p>GetImageChannelRange() returns the range of one or more image channels.</p> |
| |
| <p>The format of the GetImageChannelRange method is:</p> |
| |
| <pre class="code"> |
| MagickBooleanType GetImageChannelRange(const Image *image, |
| const ChannelType channel,double *minima,double *maxima, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>channel</h5> |
| <p>the channel.</p> |
| |
| <h5>minima</h5> |
| <p>the minimum value in the channel.</p> |
| |
| <h5>maxima</h5> |
| <p>the maximum value in the channel.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/statistic_8c.html" id="GetImageChannelStatistics">GetImageChannelStatistics</a></h2> |
| <div class="doc-section"> |
| |
| <p>GetImageChannelStatistics() returns statistics for each channel in the image. The statistics include the channel depth, its minima, maxima, mean, standard deviation, kurtosis and skewness. You can access the red channel mean, for example, like this:</p> |
| |
| <pre class="text"> |
| channel_statistics=GetImageChannelStatistics(image,exception); |
| red_mean=channel_statistics[RedChannel].mean; |
| </pre> |
| |
| <p>Use MagickRelinquishMemory() to free the statistics buffer.</p> |
| |
| <p>The format of the GetImageChannelStatistics method is:</p> |
| |
| <pre class="code"> |
| ChannelStatistics *GetImageChannelStatistics(const Image *image, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
|
|
| </div>
|
|
|
| <div id="linkbar">
|
| <span id="linkbar-west"> </span>
|
| <span id="linkbar-center">
|
| <a href="http://www.imagemagick.org/discourse-server/">Discourse Server</a> •
|
| <a href="http://www.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi">Studio</a>
|
| </span>
|
| <span id="linkbar-east"> </span>
|
| </div>
|
| <div class="footer">
|
| <span id="footer-west">© 1999-2011 ImageMagick Studio LLC</span>
|
| <span id="footer-east"> <a href="../http://www.imagemagick.org/script/contact.php">Contact the Wizards</a></span>
|
| </div>
|
| <div style="clear: both; margin: 0; width: 100%; "></div>
|
| <script type="text/javascript">
|
| var _gaq = _gaq || [];
|
| _gaq.push(['_setAccount', 'UA-17690367-1']);
|
| _gaq.push(['_trackPageview']);
|
|
|
| (function() {
|
| var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
|
| ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
|
| var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
|
| })();
|
| </script>
|
| </body>
|
| </html>
|