Gmagick
PHP Manual

Gmagick::separateimagechannel

(PECL gmagick >= Unknown)

Gmagick::separateimagechannelSeparates a channel from the image

설명

public void Gmagick::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.

인수

channel

Identify which channel to extract: RedChannel, GreenChannel, BlueChannel, OpacityChannel, CyanChannel, MagentaChannel, YellowChannel, BlackChannel.

반환값

The Gmagick object on success

오류/예외

Throws an GmagickException on error.


Gmagick
PHP Manual