<!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>Description</title>
</head>
<body><div class="manualnavbar" style="text-align: center;">
<div class="prev" style="text-align: left; float: left;"><a href="imagick.flopimage.html">Imagick::flopImage</a></div>
<div class="next" style="text-align: right; float: right;"><a href="imagick.frameimage.html">Imagick::frameImage</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.forwardfouriertransformimage" class="refentry">
<div class="refnamediv">
<h1 class="refname">Imagick::forwardFourierTransformImage</h1>
<p class="verinfo">(No version information available, might only be in Git)</p><p class="refpurpose"><span class="refname">Imagick::forwardFourierTransformImage</span> — <span class="dc-title">Description</span></p>
</div>
<div class="refsect1 description" id="refsect1-imagick.forwardfouriertransformimage-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><strong>Imagick::forwardFourierTransformimage</strong></span>
( <span class="methodparam"><span class="type">bool</span> <code class="parameter">$magnitude</code></span>
)</div>
<p class="para rdfs-comment">
Implements the discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-imagick.forwardfouriertransformimage-parameters">
<h3 class="title">Parameters</h3>
<dl>
<dt>
<code class="parameter">magnitude</code></dt>
<dd>
<p class="para">
If true, return as magnitude / phase pair otherwise a real / imaginary image pair.
</p>
</dd>
</dl>
</div>
<div class="refsect1 returnvalues" id="refsect1-imagick.forwardfouriertransformimage-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success.
</p>
</div>
<div class="refsect1 examples" id="refsect1-imagick.forwardfouriertransformimage-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3916">
<p><strong>Example #1 <span class="function"><strong>Imagick::forwardFourierTransformImage()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">//Utility function for forwardTransformImage<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">createMask</span><span style="color: #007700">() {<br /> </span><span style="color: #0000BB">$draw </span><span style="color: #007700">= new \</span><span style="color: #0000BB">ImagickDraw</span><span style="color: #007700">();<br /><br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">setStrokeOpacity</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">setStrokeColor</span><span style="color: #007700">(</span><span style="color: #DD0000">'rgb(255, 255, 255)'</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">setFillColor</span><span style="color: #007700">(</span><span style="color: #DD0000">'rgb(255, 255, 255)'</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">//Draw a circle on the y-axis, with it's centre<br /> //at x, y that touches the origin<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">circle</span><span style="color: #007700">(</span><span style="color: #0000BB">250</span><span style="color: #007700">, </span><span style="color: #0000BB">250</span><span style="color: #007700">, </span><span style="color: #0000BB">220</span><span style="color: #007700">, </span><span style="color: #0000BB">250</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= new \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">();<br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">newImage</span><span style="color: #007700">(</span><span style="color: #0000BB">512</span><span style="color: #007700">, </span><span style="color: #0000BB">512</span><span style="color: #007700">, </span><span style="color: #DD0000">"black"</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">drawImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$draw</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">gaussianBlurImage</span><span style="color: #007700">(</span><span style="color: #0000BB">20</span><span style="color: #007700">, </span><span style="color: #0000BB">20</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">autoLevelImage</span><span style="color: #007700">();<br /><br /> return </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">;<br />}<br /><br /><br />function </span><span style="color: #0000BB">forwardFourierTransformImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$imagePath</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">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">resizeimage</span><span style="color: #007700">(</span><span style="color: #0000BB">512</span><span style="color: #007700">, </span><span style="color: #0000BB">512</span><span style="color: #007700">, \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">FILTER_LANCZOS</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$mask </span><span style="color: #007700">= </span><span style="color: #0000BB">createMask</span><span style="color: #007700">();<br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">forwardFourierTransformImage</span><span style="color: #007700">(</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /><br /> @</span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">setimageindex</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$magnitude </span><span style="color: #007700">= </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">getimage</span><span style="color: #007700">();<br /><br /> @</span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">setimageindex</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$imagickPhase </span><span style="color: #007700">= </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">getimage</span><span style="color: #007700">();<br /><br /> if (</span><span style="color: #0000BB">true</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$imagickPhase</span><span style="color: #007700">-></span><span style="color: #0000BB">compositeImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$mask</span><span style="color: #007700">, \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">COMPOSITE_MULTIPLY</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /> }<br /><br /> if (</span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$output </span><span style="color: #007700">= clone </span><span style="color: #0000BB">$imagickPhase</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$output</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 /> </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">$output</span><span style="color: #007700">-></span><span style="color: #0000BB">getImageBlob</span><span style="color: #007700">();<br /> }<br /><br /> </span><span style="color: #0000BB">$magnitude</span><span style="color: #007700">-></span><span style="color: #0000BB">inverseFourierTransformImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$imagickPhase</span><span style="color: #007700">, </span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$magnitude</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 /> </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">$magnitude</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.flopimage.html">Imagick::flopImage</a></div>
<div class="next" style="text-align: right; float: right;"><a href="imagick.frameimage.html">Imagick::frameImage</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>
