Separates a channel from the image


(PECL gmagick >= Unknown)

Gmagick::separateimagechannelSeparates a channel from the image

Описание

public Gmagick 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.

Список параметров

channel

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

Возвращаемые значения

The Gmagick object on success

Ошибки

Вызывает GmagickException при ошибке.