Imagick::compareImageLayers
(PECL imagick 2, PECL imagick 3)
Imagick::compareImageLayers — Returns the maximum bounding region between images
说明
Compares each image with the next in a sequence and returns the maximum bounding region of any pixel differences it discovers. 此方法在Imagick基于ImageMagick 6.2.9以上版本编译时可用。
返回值
成功时返回 true。
错误／异常
错误时抛出 ImagickException。
示例
示例 #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 */
?>参见
- Imagick::optimizeImageLayers() - Removes repeated portions of images to optimize
- Imagick::writeImages() - Writes an image or image sequence
- Imagick::writeImage() - 把图片写入指定的文件
add a note
User Contributed Notes
There are no user contributed notes for this page.
