Imagick::optimizeImageLayers

(PECL imagick 2.0.0)

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

설명

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. 이 메쏘드는 Imagick을 ImageMagick 6.2.9 이상으로 컴파일 했을 때만 사용할 수 있습니다.

반환값

성공시에 TRUE를 반환합니다.

오류/예외

오류시에 ImagickException이 발생합니다.

예제

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);
?>

참고

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

add a note

User Contributed Notes 1 note

down

-1

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');

add a note