PHP - Manual: Gmagick::separateimagechannel
2024-11-14
(PECL gmagick >= Unknown)
Gmagick::separateimagechannel — Separates a channel from the image
Separates a channel from the image and returns a grayscale image. A channel is a particular color component of each pixel in the image.
The Gmagick object.
错误时抛出 GmagickException。
官方地址:https://www.php.net/manual/en/gmagick.separateimagechannel.php