def gammaCorrection(v):
    if v <= 0.04045 * 255:
        return (v / 255) / 12.92
    elif v > 0.04045 * 255:
        return (((v / 255) + 0.055) / 1.055) ** 2.4


def reverseGammaCorrection(v_reverse):
    if v_reverse <= 0.0031308:
        return round(255 * (12.92 * v_reverse))
    elif v_reverse > 0.0031308:
        return round(255 * (1.055 * v_reverse ** 0.41666 - 0.055))