Imagick::compareImages

    (PECL imagick 2, PECL imagick 3)

    Imagick::compareImages — Compares an image to a reconstructed image

    说明

    public Imagick::compareImages(Imagick $compare, int $metric): array

    Returns an array containing a reconstructed image and the difference between images.

    参数

    compare

    An image to compare to.

    metric

    Provide a valid metric type constant. Refer to this list of metric constants.

    返回值

    Returns an array containing a reconstructed image and the difference between images.

    错误／异常

    错误时抛出 ImagickException。

    示例

    示例 #1 Using Imagick::compareImages():

    Compare images and display the reconstructed image

    <?php

    $image1     = new imagick("image1.png");
    $image2 = new imagick("image2.png");

    $result = $image1->compareImages($image2, Imagick::METRIC_MEANSQUAREERROR);
    $result[0]->setImageFormat("png");

    header("Content-Type: image/png");
    echo     $result[0];

    ?>

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