vinverse.py

def vinverse(
    clip: vs.VideoNode,
    blur: GenericVSFunction = partial(core.std.Convolution, matrix=[1, 2, 1], mode=ConvMode.VERTICAL),
    blur2: GenericVSFunction = partial(core.std.Convolution, matrix=[1, 4, 6, 4, 1], mode=ConvMode.VERTICAL),
    csstr: float = 2.7, scale: float = 0.25, threshold: int = 255, planes: PlanesT = None
) -> vs.VideoNode:
    """
    A simple but effective plugin to remove residual combing. Based on an AviSynth script by Didée.

    :param clip: Clip to process.
    :param blur: Filter used to remove combing.
    :param blur2: Filter used to calculate contra sharpening.
    :param csstr: Strength of contra sharpening.
    :param threshold: Change no pixel by more than this (default=255: unrestricted).
    :param scale: Scale factor for vshrpD*vblurD < 0.
    """

    blur = blur(clip, planes=planes)
    blur2 = blur2(blur, planes=planes)

    decomb = norm_expr(
        [clip, blur, blur2],
        'y z - {csstr} * D1! x y - D2! D1@ abs D1A! D2@ abs D2A! '
        'D1@ D2@ xor D1A@ D2A@ < D1@ D2@ ? {scale} * D1A@ D2A@ < D1@ D2@ ? ? y + '
        'LIM! x {thr} + LIM@ < x {thr} + x {thr} - LIM@ > x {thr} - LIM@ ? ?',
        planes, csstr=csstr, scale=scale, thr=scale_8bit(clip, threshold),
    )

    return decomb