(PECL imagick 2.0.0)
Compares image channels of an image to a reconstructed image
float Imagick::getImageChannelDistortion ( Imagick $reference, int $channel, int $metric )
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.
Returns:
Returns TRUE on success.
Exception:
Throws ImagickException on error.
Please login to continue.