<!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>Force all pixels above the threshold into white</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="imagick.waveimage.html">Imagick::waveImage</a></div> <div class="next" style="text-align: right; float: right;"><a href="imagick.writeimage.html">Imagick::writeImage</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.whitethresholdimage" class="refentry"> <div class="refnamediv"> <h1 class="refname">Imagick::whiteThresholdImage</h1> <p class="verinfo">(PECL imagick 2.0.0)</p><p class="refpurpose"><span class="refname">Imagick::whiteThresholdImage</span> — <span class="dc-title">Force all pixels above the threshold into white</span></p> </div> <div class="refsect1 description" id="refsect1-imagick.whitethresholdimage-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>Imagick::whiteThresholdImage</strong></span> ( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$threshold</code></span> )</div> <p class="para rdfs-comment"> Is like Imagick::ThresholdImage() but force all pixels above the threshold into white while leaving all pixels below the threshold unchanged. </p> </div> <div class="refsect1 parameters" id="refsect1-imagick.whitethresholdimage-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">threshold</code></em></span> <dd> <p class="para"> </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-imagick.whitethresholdimage-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <strong><code>TRUE</code></strong> on success. </p> </div> <div class="refsect1 changelog" id="refsect1-imagick.whitethresholdimage-changelog"> <h3 class="title">Changelog</h3> <p class="para"> <table class="doctable informaltable"> <thead> <tr> <th>Version</th> <th>Description</th> </tr> </thead> <tbody class="tbody"> <tr> <td>2.1.0</td> <td> Now allows a string representing the color as a parameter. Previous versions allow only an ImagickPixel object. </td> </tr> </tbody> </table> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="imagick.waveimage.html">Imagick::waveImage</a></div> <div class="next" style="text-align: right; float: right;"><a href="imagick.writeimage.html">Imagick::writeImage</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>