public readonly Gray16 ToGray16() => PixelHelper.ToGray16(this);
public readonly Gray16 ToGray16() => PixelHelper.ToGray16(R, G, B);
public readonly Gray16 ToGray16() => PixelHelper.ToGray16(this);
public readonly Gray16 ToGray16() => PixelHelper.ToGray16(R, G, B);