function.imagick-compareimages.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Compares an image to a reconstructed image</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagick-compareimagelayers.html">Imagick::compareImageLayers</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagick-compositeimage.html">Imagick::compositeImage</a></div> <div class="up"><a href="class.imagick.html">The Imagick class</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.imagick-compareimages" class="refentry"> <div class="refnamediv"> <h1 class="refname">Imagick::compareImages</h1> <p class="verinfo">(No version information available, might be only in CVS)</p><p class="refpurpose"><span class="refname">Imagick::compareImages</span> — <span class="dc-title">Compares an image to a reconstructed image</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">array</span> <span class="methodname"><b><b>Imagick::compareImages</b></b></span> ( <span class="methodparam"><span class="type"><a href="class.imagick.html" class="type Imagick">Imagick</a></span> <tt class="parameter">$compare</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$metric</tt></span> )</div> <div class="warning"><b class="warning">Warning</b><p class="simpara">This function iscurrently not documented; only its argument list is available.</p></div> <p class="para"> Returns an array containing a reconstructed image and the difference between images. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">compare</tt></i></span> <dd> <p class="para"> An image to compare to. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">metric</tt></i></span> <dd> <p class="para"> Provide a valid metric type constant. Refer to this list of <a href="imagick.constants.html#imagick.constants.metric" class="link">metric constants</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success. </p> </div> <div class="refsect1 errors"> <h3 class="title">Errors/Exceptions</h3> <p class="para"> Throws ImagickException on error. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 Using <b>Imagick::compareImages()</b>:</b></p> <div class="example-contents"><p> Compare images and display the reconstructed image </p></div> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br />$image1 </span><span style="color: #007700">= new </span><span style="color: #0000BB">imagick</span><span style="color: #007700">(</span><span style="color: #DD0000">"image1.png"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$image2 </span><span style="color: #007700">= new </span><span style="color: #0000BB">imagick</span><span style="color: #007700">(</span><span style="color: #DD0000">"image2.png"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">$image1</span><span style="color: #007700">-></span><span style="color: #0000BB">compareImages</span><span style="color: #007700">(</span><span style="color: #0000BB">$image2</span><span style="color: #007700">, </span><span style="color: #0000BB">Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">METRIC_MEANSQUAREERROR</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$result</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-></span><span style="color: #0000BB">setImageFormat</span><span style="color: #007700">(</span><span style="color: #DD0000">"png"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-Type: image/png"</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$result</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">];<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagick-compareimagelayers.html">Imagick::compareImageLayers</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagick-compositeimage.html">Imagick::compositeImage</a></div> <div class="up"><a href="class.imagick.html">The Imagick class</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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