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<title>ImageMagick: MagickCore, C API for ImageMagick: Compare an Image to a Reconstructed Image</title>
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<p class="text-center"><a href="compare.html#CompareImagesCommand">CompareImagesCommand</a></p>
<h2><a href="http://www.imagemagick.org/api/MagickWand/compare_8c.html" id="CompareImagesCommand">CompareImagesCommand</a></h2>
<p>CompareImagesCommand() compares two images and returns the difference between them as a distortion metric and as a new image visually annotating their differences.</p>
<p>The format of the CompareImagesCommand method is:</p>
<pre class="text">
MagickBooleanType CompareImagesCommand(ImageInfo *image_info,int argc,
char **argv,char **metadata,ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p>
<dd>
</dd>
<dd> </dd>
<dl class="dl-horizontal">
<dt>image_info</dt>
<dd>the image info. </dd>
<dd> </dd>
<dt>argc</dt>
<dd>the number of elements in the argument vector. </dd>
<dd> </dd>
<dt>argv</dt>
<dd>A text array containing the command line arguments. </dd>
<dd> </dd>
<dt>metadata</dt>
<dd>any metadata is returned here. </dd>
<dd> </dd>
<dt>exception</dt>
<dd>return any errors or warnings in this structure. </dd>
<dd> </dd>
</dl>
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