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Imagick::optimizeImageLayers

(PECL imagick 2.0.0)

Imagick::optimizeImageLayersRemoves repeated portions of images to optimize

Description

bool Imagick::optimizeImageLayers ( void )

Compares each image the GIF disposed forms of the previous image in the sequence. From this it attempts to select the smallest cropped image to replace each frame, while preserving the results of the animation. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.

Examples

Example #1 Using Imagick::optimizeImageLayers()

Reading, optimizing and writing a GIF image

<?php
/* create new imagick object */
$im = new Imagick("test.gif");

/* optimize the image layers */
$im->optimizeImageLayers();

/* write the image back */
$im->writeImages("test_optimized.gif"true);
?>

See Also

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User Contributed Notes 1 note

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f21 dot groups at gmail dot com
1 year ago
In imagick 3.x (have not checked 2.x), this returns an imagemagick object and not a boolean.

<?php

$image
= new Imagick('myanimation.gif');

$image = $image->optimizeImageLayers(); //Does not return a boolean!

$image->writeImage('optimized.gif');
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