Gmagick::scaleimageGmagick::separateimagechannel
(PECL gmagick >= Unknown)
Gmagick::separateimagechannel — Separates a channel from the image
설명
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.
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