<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Selects a threshold for each pixel based on a range of intensity</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="imagick.adaptivesharpenimage.html">Imagick::adaptiveSharpenImage</a></div> <div class="next" style="text-align: right; float: right;"><a href="imagick.addimage.html">Imagick::addImage</a></div> <div class="up"><a href="class.imagick.html">Imagick</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="imagick.adaptivethresholdimage" class="refentry"> <div class="refnamediv"> <h1 class="refname">Imagick::adaptiveThresholdImage</h1> <p class="verinfo">(PECL imagick 2.0.0)</p><p class="refpurpose"><span class="refname">Imagick::adaptiveThresholdImage</span> — <span class="dc-title">Selects a threshold for each pixel based on a range of intensity</span></p> </div> <div class="refsect1 description" id="refsect1-imagick.adaptivethresholdimage-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>Imagick::adaptiveThresholdImage</strong></span> ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$width</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$height</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$offset</code></span> )</div> <p class="para rdfs-comment"> Selects an individual threshold for each pixel based on the range of intensity values in its local neighborhood. This allows for thresholding of an image whose global intensity histogram doesn't contain distinctive peaks. </p> </div> <div class="refsect1 parameters" id="refsect1-imagick.adaptivethresholdimage-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">width</code></em></span> <dd> <p class="para"> Width of the local neighborhood. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">height</code></em></span> <dd> <p class="para"> Height of the local neighborhood. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">offset</code></em></span> <dd> <p class="para"> The mean offset </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-imagick.adaptivethresholdimage-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <strong><code>TRUE</code></strong> on success. </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="imagick.adaptivesharpenimage.html">Imagick::adaptiveSharpenImage</a></div> <div class="next" style="text-align: right; float: right;"><a href="imagick.addimage.html">Imagick::addImage</a></div> <div class="up"><a href="class.imagick.html">Imagick</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>