Php/docs/imagick.compareimages

• PHP Manual
• Imagick
• Compares an image to a reconstructed image

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。

范例

Example #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];?>