Gmagick::separateimagechannel

(PECL gmagick >= Unknown)

Gmagick::separateimagechannel — Separates a channel from the image

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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.

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channel

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

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The Gmagick object on success

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