<!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>Enhances the contrast of a color image</title>
</head>
<body><div class="manualnavbar" style="text-align: center;">
<div class="prev" style="text-align: left; float: left;"><a href="imagick.nextimage.html">Imagick::nextImage</a></div>
<div class="next" style="text-align: right; float: right;"><a href="imagick.oilpaintimage.html">Imagick::oilPaintImage</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.normalizeimage" class="refentry">
<div class="refnamediv">
<h1 class="refname">Imagick::normalizeImage</h1>
<p class="verinfo">(PECL imagick 2.0.0)</p><p class="refpurpose"><span class="refname">Imagick::normalizeImage</span> — <span class="dc-title">Enhances the contrast of a color image</span></p>
</div>
<div class="refsect1 description" id="refsect1-imagick.normalizeimage-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>Imagick::normalizeImage</strong></span>
([ <span class="methodparam"><span class="type">int</span> <code class="parameter">$channel</code><span class="initializer"> = Imagick::CHANNEL_DEFAULT</span></span>
] )</div>
<p class="para rdfs-comment">
Enhances the contrast of a color image by adjusting the pixels
color to span the entire range of colors available.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-imagick.normalizeimage-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">channel</code></dt>
<dd>
<p class="para">
Provide any channel constant that is valid for your channel mode. To
apply to more than one channel, combine channeltype constants using
bitwise operators. Refer to this
list of <a href="imagick.constants.html#imagick.constants.channel" class="link">channel constants</a>.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-imagick.normalizeimage-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success.
</p>
</div>
<div class="refsect1 examples" id="refsect1-imagick.normalizeimage-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3974">
<p><strong>Example #1 <span class="function"><strong>Imagick::normalizeImage()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">normalizeImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$imagePath</span><span style="color: #007700">, </span><span style="color: #0000BB">$channel</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= new \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">(</span><span style="color: #0000BB">realpath</span><span style="color: #007700">(</span><span style="color: #0000BB">$imagePath</span><span style="color: #007700">));<br /> </span><span style="color: #0000BB">$original </span><span style="color: #007700">= clone </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$original</span><span style="color: #007700">-></span><span style="color: #0000BB">cropimage</span><span style="color: #007700">(</span><span style="color: #0000BB">$original</span><span style="color: #007700">-></span><span style="color: #0000BB">getImageWidth</span><span style="color: #007700">() / </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">$original</span><span style="color: #007700">-></span><span style="color: #0000BB">getImageHeight</span><span style="color: #007700">(), </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">normalizeImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$channel</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">compositeimage</span><span style="color: #007700">(</span><span style="color: #0000BB">$original</span><span style="color: #007700">, \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">COMPOSITE_ATOP</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-Type: image/jpg"</span><span style="color: #007700">);<br /> echo </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">getImageBlob</span><span style="color: #007700">();<br />}<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
</div><hr /><div class="manualnavbar" style="text-align: center;">
<div class="prev" style="text-align: left; float: left;"><a href="imagick.nextimage.html">Imagick::nextImage</a></div>
<div class="next" style="text-align: right; float: right;"><a href="imagick.oilpaintimage.html">Imagick::oilPaintImage</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>
