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<Imagick::getImageChannelDepthImagick::getImageChannelDistortions>
^ImagickLast updated: Mon, 26 Oct 2026

Imagick::getImageChannelDistortion

(PECL imagick 2, PECL imagick 3)

Imagick::getImageChannelDistortion — Compares image channels of an image to a reconstructed image

Description

public function Imagick::getImageChannelDistortion(Imagick $reference, int $channel, int $metric): float

Compares one or more image channels of an image to a reconstructed image and returns the specified distortion metric.

Parameters

reference

Imagick object to compare to.

channel

Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.

metric

One of the metric type constants.

Return Values

Returns true on success.

Errors/Exceptions

Throws ImagickException on error.


<Imagick::getImageChannelDepthImagick::getImageChannelDistortions>
^ImagickLast updated: Mon, 26 Oct 2026