def _R2(self,YCrCb):
		Y = YCrCb[:,:,0]
		Cr = YCrCb[:,:,1]
		Cb = YCrCb[:,:,2]
		e1 = Cr <= (1.5862*Cb+20)
		e2 = Cr >= (0.3448*Cb+76.2069)
		e3 = Cr >= (-4.5652*Cb+234.5652)
		e4 = Cr <= (-1.15*Cb+301.75)
		e5 = Cr <= (-2.2857*Cb+432.85)
		return e1 & e2 & e3 & e4 & e5
dataset/ETHPy150Open bytefish/facerec/py/facedet/detector.py/SkinDetector._R2/original