Imagick::compareImageLayers

(PECL imagick 2.0.0)

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

Beskrivelse

Imagick Imagick::compareImageLayers ( int $method )

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.

Parametre

method: One of the layer method constants.

Returnerings Værdier

Returns TRUE on success.

Fejl/Undtagelser

Throws ImagickException on error.

Eksempler

Eksempel #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 */
?>

Se også

Imagick::optimizeImageLayers() - Removes repeated portions of images to optimize
Imagick::writeImages() - Writes an image or image sequence
Imagick::writeImage() - Writes an image to the specified filename

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