Imagick::compareImageChannels

(No version information available, might be only in CVS)

Imagick::compareImageChannels — Returns the difference in one or more images

Description

Imagick Imagick::compareImageChannels ( Imagick $image , int $channelType , int $metricType )

Warning

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

Compares one or more images and returns the difference image.

Parameters

image

Imagick object containing the image to compare.

channelType

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

metricType

One of the metric type constants.

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.