The Imagick class
PHP Manual

Imagick::getImageDistortion

(PECL imagick 2.0.0)

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

Description

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

This function is currently not documented; only its argument list is available.

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

Parameters

reference

Imagick object to compare to.

metric

One of the metric type constants.

Return Values

Returns the distortion metric used on the image (or the best guess thereof). Throw an ImagickException on error.

Errors/Exceptions

Throws ImagickException on error.

The Imagick class
PHP Manual