test_colorconv.py 文件源码

def test_rgb_lch_roundtrip(self):
        rgb = img_as_float(self.img_rgb)
        lab = rgb2lab(rgb)
        lch = lab2lch(lab)
        lab2 = lch2lab(lch)
        rgb2 = lab2rgb(lab2)
        assert_array_almost_equal(rgb, rgb2)