Imagick::optimizeImageLayers

(PECL imagick 2, PECL imagick 3)

Imagick::optimizeImageLayers — Removes repeated portions of images to optimize

Descrizione

public Imagick::optimizeImageLayers(): bool

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

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Restituisce true in caso di successo.

Errori/Eccezioni

Lancia una ImagickException in caso di errore.

Esempi

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);
?>

Vedere anche:

Imagick::compareImageLayers() - Returns the maximum bounding region between images
Imagick::writeImages() - Writes an image or image sequence
Imagick::writeImage() - Writes an image to the specified filename

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User Contributed Notes 1 note

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f21 dot groups at gmail dot com ¶

11 years 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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