Imagick::getImageChannelDistortions

    (PECL imagick 2 >= 2.3.0, PECL imagick 3)

    Imagick::getImageChannelDistortions — Gets channel distortions

    Description

    public Imagick::getImageChannelDistortions(Imagick $reference, int $metric, int $channel = Imagick::CHANNEL_DEFAULT): float

    Compares one or more image channels of an image to a reconstructed image and returns the specified distortion metrics This method is available if Imagick has been compiled against ImageMagick version 6.4.4 or newer.

    Parameters

    reference

    Imagick object containing the reference image

    metric

    Refer to this list of metric type constants.

    channel

    Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators. Defaults to Imagick::CHANNEL_DEFAULT. Refer to this list of channel constants

    Return Values

    Returns a float describing the channel distortion.

    Errors/Exceptions

    Throws ImagickException on error.

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