Imagick::compareImageLayers
(PECL imagick 2.0.0)
Imagick::compareImageLayers — Returns the maximum bounding region between images
Description
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.
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
/*?create?new?imagick?object?*/
$im?=?new?Imagick("test.gif");
/*?optimize?the?image?layers?*/
$result?=?$im->compareImageLayers(imagick::LAYERMETHOD_COALESCE);
/*?work?on?the?$result?*/
?>See Also
- 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
← Imagick::compareImageChannels
Imagick::compareImages →
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