def test_YCbCr_to_RGB(self): """ Tests :func:`colour.models.rgb.ycbcr.YCbCr_to_RGB` definition. """ np.testing.assert_almost_equal(YCbCr_to_RGB( np.array([0.66035745, 0.17254902, 0.53216593])), np.array([0.75, 0.75, 0.0]), decimal=7) np.testing.assert_almost_equal( YCbCr_to_RGB(np.array([471, 650, 390]), in_bits=10, in_legal=True, in_int=True), np.array([0.25018598, 0.49950072, 0.75040741]), decimal=7) np.testing.assert_almost_equal(YCbCr_to_RGB(np.array([150, 99, 175]), in_bits=8, in_legal=False, in_int=True, out_bits=8, out_legal=True, out_int=True), np.array([208, 131, 99]), decimal=7)
def test_n_dimensional_YCbCr_to_RGB(self): """ Tests :func:`colour.models.rgb.ycbcr.YCbCr_to_RGB` definition n-dimensional arrays support. """ YCbCr = np.array([0.52230157, 0.36699593, 0.62183309]) RGB = YCbCr_to_RGB(YCbCr) RGB = np.tile(RGB, 4) RGB = np.reshape(RGB, (4, 3)) YCbCr = np.tile(YCbCr, 4) YCbCr = np.reshape(YCbCr, (4, 3)) np.testing.assert_almost_equal(YCbCr_to_RGB(YCbCr), RGB) RGB = np.tile(RGB, 4) RGB = np.reshape(RGB, (4, 4, 3)) YCbCr = np.tile(YCbCr, 4) YCbCr = np.reshape(YCbCr, (4, 4, 3)) np.testing.assert_almost_equal(YCbCr_to_RGB(YCbCr), RGB) RGB = np.tile(RGB, 4) RGB = np.reshape(RGB, (4, 4, 4, 3)) YCbCr = np.tile(YCbCr, 4) YCbCr = np.reshape(YCbCr, (4, 4, 4, 3)) np.testing.assert_almost_equal(YCbCr_to_RGB(YCbCr), RGB)
def test_domain_range_scale_YCbCr_to_RGB(self): """ Tests :func:`colour.models.rgb.prismatic.YCbCr_to_RGB` definition domain and range scale support. """ YCbCr = np.array([0.52230157, 0.36699593, 0.62183309]) RGB = YCbCr_to_RGB(YCbCr) d_r = (('reference', 1), (1, 1), (100, 100)) for scale, factor in d_r: with domain_range_scale(scale): np.testing.assert_almost_equal( YCbCr_to_RGB(YCbCr * factor), RGB * factor, decimal=7)
def test_nan_YCbCr_to_RGB(self): """ Tests :func:`colour.models.rgb.ycbcr.YCbCr_to_RGB` definition nan support. """ cases = [-1.0, 0.0, 1.0, -np.inf, np.inf, np.nan] cases = set(permutations(cases * 3, r=3)) for case in cases: YCbCr = np.array(case) YCbCr_to_RGB(YCbCr)