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    Gmagick::separateimagechannel

    (PECL gmagick >= Unknown)

    Gmagick::separateimagechannel — Separates a channel from the image

    Description

    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.

    Parameters

    channel

    One of the Channel constant (Gmagick::CHANNEL_*).

    Return Values

    The Gmagick object.

    Errors/Exceptions

    Throws an GmagickException on error.

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