Imagick::separateImageChannel

Imagick::separateImageChannel

(PECL imagick 2.0.0)

Imagick::separateImageChannelSeparates a channel from the image

Description

bool Imagick::separateImageChannel ( int $channel )

Separates a channel from the image and returns a grayscale image. A channel is a particular color component of each pixel in the image.

Parameters

channel

Which 'channel' to return. For colorspaces other than RGB, you can still use the CHANNEL_RED,