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Imagick::getImageChannelDistortion

(PECL imagick 2, PECL imagick 3)

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

Опис

public 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.

Параметри

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.

Значення, що повертаються

Повертає true в разі успіху.

Помилки/виключення

Кидає ImagickException в разі помилки.