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    Gmagick::getimagegamma

    (PECL gmagick >= Unknown)

    Gmagick::getimagegamma — Gets the image gamma

    说明

    public Gmagick::getimagegamma(): float

    Gets the image gamma

    参数

    此函数没有参数。

    返回值

    Returns the image gamma on success

    错误／异常

    错误时抛出 GmagickException。

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