cannonball_wrapper.py 文件源码

def _rgb_integers_to_components(self, rgb_integers):
        red_mask = 0x00FF0000
        green_mask = 0x0000FF00
        blue_mask =  0x000000FF
        masks = np.asarray([[red_mask, green_mask, blue_mask]])
        masked_rgb_components = np.bitwise_and(rgb_integers, masks)

        red_shifted = np.right_shift(masked_rgb_components[:,0], 16)
        green_shifted = np.right_shift(masked_rgb_components[:,1], 8)
        blue_shifted =  np.right_shift(masked_rgb_components[:,2], 0)
        return np.array([red_shifted, green_shifted, blue_shifted]).transpose()