Imagick::compareImages
(PECL imagick 2, PECL imagick 3)
Imagick::compareImages — Compares an image to a reconstructed image
Description
public function Imagick::compareImages(
Imagick $compare,
int $metric):
array
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