Imagick::getImageChannelDistortion
(PECL imagick 2, PECL imagick 3)
Imagick::getImageChannelDistortion — Compares image channels of an image to a reconstructed image
Описание
public Imagick::getImageChannelDistortion
( Imagick
$reference
, int $channel
, int $metric
) : floatCompares one or more image channels of an image to a reconstructed image and returns the specified distortion metric.
Список параметров
-
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.
Возвращаемые значения
В случае успешной работы возвращает true.
Ошибки
Вызывает ImagickException при ошибке.