Imagick::compareImageLayers

(PECL imagick 2.0.0)

Imagick::compareImageLayers — Returns the maximum bounding region between images

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Imagick::compareImageLayers ( int $method ) : Imagick

Compares each image with the next in a sequence and returns the maximum bounding region of any pixel differences it discovers. 锟剿凤拷锟斤拷锟斤拷Imagick锟斤拷锟斤拷ImageMagick 6.2.9锟斤拷锟较版本锟斤拷锟斤拷时锟斤拷锟矫★拷

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method

One of the layer method constants.

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Example #1 Using Imagick::compareImageLayers()

Comparing image layers

<?php
/* create new imagick object */
$im = new Imagick("test.gif");

/* optimize the image layers */
$result = $im->compareImageLayers(imagick::LAYERMETHOD_COALESCE);

/* work on the $result */
?>

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