Php/docs/imagick.compareimages
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Imagick::compareImages
(PECL imagick 2, PECL imagick 3)
Imagick::compareImages — Compares an image to a reconstructed image
Description
public Imagick::compareImages
( Imagick $compare
, int $metric
) : array
Returns an array containing a reconstructed image and the difference between images.
Parameters
compare- An image to compare to.
metric- Provide a valid metric type constant. Refer to this list of metric constants.
Return Values
Returns an array containing a reconstructed image and the difference between images.
Errors/Exceptions
Throws ImagickException on error.
Examples
Example #1 Using Imagick::compareImages():
Compare images and display the reconstructed image
<?php$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];?>
