def test_cctf_decoding_ROMMRGB(self):
"""
Test :func:`colour.models.rgb.transfer_functions.rimm_romm_rgb.\
cctf_decoding_ROMMRGB` definition.
"""
self.assertAlmostEqual(cctf_decoding_ROMMRGB(0.0), 0.0, places=7)
self.assertAlmostEqual(
cctf_decoding_ROMMRGB(0.385711424751138), 0.18, places=7
)
self.assertAlmostEqual(cctf_decoding_ROMMRGB(1.0), 1.0, places=7)
np.testing.assert_allclose(
cctf_decoding_ROMMRGB(98, in_int=True),
0.18,
atol=0.001,
rtol=0.001,
)
np.testing.assert_allclose(
cctf_decoding_ROMMRGB(1579, bit_depth=12, in_int=True),
0.18,
atol=0.001,
rtol=0.001,
)
def test_n_dimensional_cctf_decoding_ROMMRGB(self):
"""
Test :func:`colour.models.rgb.transfer_functions.rimm_romm_rgb.\
cctf_decoding_ROMMRGB` definition n-dimensional arrays support.
"""
X_p = 0.385711424751138
X = cctf_decoding_ROMMRGB(X_p)
X_p = np.tile(X_p, 6)
X = np.tile(X, 6)
np.testing.assert_almost_equal(
cctf_decoding_ROMMRGB(X_p), X, decimal=7
)
X_p = np.reshape(X_p, (2, 3))
X = np.reshape(X, (2, 3))
np.testing.assert_almost_equal(
cctf_decoding_ROMMRGB(X_p), X, decimal=7
)
X_p = np.reshape(X_p, (2, 3, 1))
X = np.reshape(X, (2, 3, 1))
np.testing.assert_almost_equal(
cctf_decoding_ROMMRGB(X_p), X, decimal=7
)
def test_nan_cctf_decoding_ROMMRGB(self):
"""
Tests :func:`colour.models.rgb.transfer_functions.rimm_romm_rgb.\
cctf_decoding_ROMMRGB` definition nan support.
"""
cctf_decoding_ROMMRGB(
np.array([-1.0, 0.0, 1.0, -np.inf, np.inf, np.nan]))
def test_domain_range_scale_cctf_decoding_ROMMRGB(self):
"""
Test :func:`colour.models.rgb.transfer_functions.rimm_romm_rgb.\
cctf_decoding_ROMMRGB` definition domain and range scale support.
"""
X_p = 0.385711424751138
X = cctf_decoding_ROMMRGB(X_p)
d_r = (("reference", 1), ("1", 1), ("100", 100))
for scale, factor in d_r:
with domain_range_scale(scale):
np.testing.assert_almost_equal(
cctf_decoding_ROMMRGB(X_p * factor), X * factor, decimal=7
)