Imagick::optimizeImageLayers

(PECL imagick 2, PECL imagick 3)

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

Descrição

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. Este método estará disponível se a extensão Imagick tiver sido compilada com a ImageMagick versão 6.2.9 ou superior.

Parâmetros

Esta função não possui parâmetros.

Valor Retornado

Retorna true em caso de sucesso.

Erros/Exceções

Lança uma exceção ImagickException em caso de erro.

Exemplos

Exemplo #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);
?>

Veja Também

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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