Imagick::compareImageLayers

(PECL imagick 2, PECL imagick 3)

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

Descrizione

public 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. Questo metodo è disponibile se Imagick è stato compilato con ImageMagick versione 6.2.9 o successive.

Elenco dei parametri

method: One of the layer method constants.

Valori restituiti

Restituisce true in caso di successo.

Errori/Eccezioni

Lancia una ImagickException in caso di errore.

Esempi

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 */
?>

Vedere anche:

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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