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Imagick::separateImageChannel
Separates a channel from the image
()
bool Imagick::separateImageChannel ( int channel )
Warning:
This function is currently not documented; only the argument list is available.
Warning:
This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.
Separates a channel from the image and returns a grayscale image. A channel is a particular color component of each pixel in the image.