Imagick::compareImages
(PECL imagick 2.0.0)
Imagick::compareImages — Compares an image to a reconstructed image
Description
array Imagick::compareImages ( Imagick $compare , int $metric )Returns an array containing a reconstructed image and the difference between images.
Parameters
compare
An image to compare to.
metric
Provide a valid metric type constant. Refer to this list of metric constants.
Return Values
Returns an array containing a reconstructed image and the difference between images.
Errors/Exceptions
Throws ImagickException on error.
Examples
Example #1 Using Imagick::compareImages():
Compare images and display the reconstructed image
<?php
$image1?=?new?imagick("image1.png");
$image2?=?new?imagick("image2.png");
$result?=?$image1->compareImages($image2,?Imagick::METRIC_MEANSQUAREERROR);
$result[0]->setImageFormat("png");
header("Content-Type:?image/png");
echo?$result[0];
?>← Imagick::compareImageLayers
Imagick::compositeImage →
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