(PECL gmagick >= Unknown)

Gmagick::separateimagechannelSeparates a channel from the image


public Gmagick::separateimagechannel ( int $channel ) : Gmagick

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


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

Возвращаемые значения

The Gmagick object on success


Вызывает GmagickException при ошибке.

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