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<title>Sets the image bias for any method that convolves an image</title>
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<h1 class="refname">Imagick::setImageBias</h1>
<p class="verinfo">(PECL imagick 2.0.0)</p><p class="refpurpose"><span class="refname">Imagick::setImageBias</span> — <span class="dc-title">Sets the image bias for any method that convolves an image</span></p>
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<div class="refsect1 description" id="refsect1-imagick.setimagebias-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>Imagick::setImageBias</strong></span>
( <span class="methodparam"><span class="type">float</span> <code class="parameter">$bias</code></span>
)</div>
<p class="para rdfs-comment">
Sets the image bias for any method that convolves an image (e.g. Imagick::ConvolveImage()).
</p>
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<div class="refsect1 parameters" id="refsect1-imagick.setimagebias-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">bias</code></dt>
<dd>
<p class="para">
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-imagick.setimagebias-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success.
</p>
</div>
<div class="refsect1 errors" id="refsect1-imagick.setimagebias-errors">
<h3 class="title">Errors/Exceptions</h3>
<p class="para">
Throws ImagickException on error.
</p>
</div>
<div class="refsect1 examples" id="refsect1-imagick.setimagebias-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4007">
<p><strong>Example #1 <span class="function"><strong>Imagick::setImageBias()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">//requires ImageMagick version 6.9.0-1 to have an effect on convolveImage<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">setImageBias</span><span style="color: #007700">(</span><span style="color: #0000BB">$bias</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= new \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">(</span><span style="color: #0000BB">realpath</span><span style="color: #007700">(</span><span style="color: #DD0000">"images/stack.jpg"</span><span style="color: #007700">));<br /><br /> </span><span style="color: #0000BB">$xKernel </span><span style="color: #007700">= array(<br /> -</span><span style="color: #0000BB">0.70</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0.70</span><span style="color: #007700">,<br /> -</span><span style="color: #0000BB">0.70</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0.70</span><span style="color: #007700">,<br /> -</span><span style="color: #0000BB">0.70</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0.70<br /> </span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">setImageBias</span><span style="color: #007700">(</span><span style="color: #0000BB">$bias </span><span style="color: #007700">* \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">getQuantum</span><span style="color: #007700">());<br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">convolveImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$xKernel</span><span style="color: #007700">, \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">CHANNEL_ALL</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">setImageFormat</span><span style="color: #007700">(</span><span style="color: #DD0000">'png'</span><span style="color: #007700">);<br /> <br /> </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">'Content-type: image/png'</span><span style="color: #007700">);<br /> echo </span><span style="color: #0000BB">$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>
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