Imagick::getImageDistortion

(PECL imagick 2.0.0)

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

说明

Imagick::getImageDistortion ( MagickWand $reference , int $metric ) : float

Compares an image to a reconstructed image and returns the specified distortion metric.

参数

reference

Imagick object to compare to.

metric

One of the metric type constants.

返回值

Returns the distortion metric used on the image (or the best guess thereof).

错误／异常

错误时抛出 ImagickException。