Imagick::compareImageLayers

    (PECL imagick 2, PECL imagick 3)

    Imagick::compareImageLayers — Returns the maximum bounding region between images

    说明

    publicImagick::compareImageLayers(int$method): Imagick

    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。

    参数

    method

    One of the layer method constants.

    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

    $im = new Imagick("test.gif");


    $result = $im->compareImageLayers(imagick::LAYERMETHOD_COALESCE);


    ?>

    参见

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