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Compares an image to a reconstructed image


Imagick::compareImages

(PECL imagick 2.0.0)

Imagick::compareImagesCompares 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 TRUE on success.

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 $image1->compareImages($image2Imagick::METRIC_MEANSQUAREERROR);
$result[0]->setImageFormat("png");

header("Content-Type: image/png");
echo 
$result[0];

?>



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