DataRow.py 文件源码

def preprocess(self, resized, landmarks):
        #ret = resized.astype('f4')
        #ret -= self.mean
        #ret /= (1.e-6+ self.std)
        #return  ret, (landmarks/40.)-0.5
        grayImg = cv2.cvtColor(resized, cv2.COLOR_BGR2GRAY).astype('f4')
        m, s = cv2.meanStdDev(grayImg)
        grayImg = (grayImg-m)/(1.e-6 + s)
        return  grayImg, landmarks/60.