Imagick::compareImageLayers

(PECL imagick 2, PECL imagick 3)

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

Description

publicImagick::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. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.

Parameters

method: One of the layer method constants.

Return Values

Returns true on success.

Errors/Exceptions

Throws ImagickException on error.

Examples

Example #1 Using Imagick::compareImageLayers()

Comparing image layers

<?php

$im = new Imagick("test.gif");


$result = $im->compareImageLayers(imagick::LAYERMETHOD_COALESCE);


?>