Imagick::compareImageChannelsImagick::compareImageLayers
(PECL imagick 2.0.0)
Imagick::compareImageLayers — Returns the maximum bounding region between images
Descrizione
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.
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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