private static double ApplyGamma(double v)
    {
      if (v <= 0.0031308)
        return Cut(v * 12.92);

      return Cut(1.055 * Math.Pow(v, (1.0 / 2.4)) - 0.055);
    }

    private static double ApplyInverseGamma(double v)
    {
      if (v <= 0.04045)
        return v / 12.92;

      return Math.Pow((v + 0.055) / 1.055, 2.4);
    }