def test_domain_range_scale_chromatic_adaptation_CMCCAT2000(self):
"""
Test :func:`colour.adaptation.cmccat2000.\
chromatic_adaptation_inverse_CMCCAT2000` definition domain and range scale
support.
"""
XYZ_c = np.array([19.52698326, 23.06833960, 24.97175229])
XYZ_w = np.array([111.15, 100.00, 35.20])
XYZ_wr = np.array([94.81, 100.00, 107.30])
L_A1 = 200
L_A2 = 200
XYZ = chromatic_adaptation_inverse_CMCCAT2000(
XYZ_c, XYZ_w, XYZ_wr, L_A1, L_A2
)
d_r = (("reference", 1), ("1", 0.01), ("100", 1))
for scale, factor in d_r:
with domain_range_scale(scale):
np.testing.assert_almost_equal(
chromatic_adaptation_inverse_CMCCAT2000(
XYZ_c * factor,
XYZ_w * factor,
XYZ_wr * factor,
L_A1,
L_A2,
),
XYZ * factor,
decimal=7,
)
def test_chromatic_adaptation_inverse_CMCCAT2000(self):
"""
Tests :func:`colour.adaptation.cmccat2000.\
chromatic_adaptation_inverse_CMCCAT2000` definition.
"""
np.testing.assert_almost_equal(chromatic_adaptation_inverse_CMCCAT2000(
np.array([19.52698326, 23.06833960, 24.97175229]),
np.array([111.15, 100.00, 35.20]),
np.array([94.81, 100.00, 107.30]), 200, 200),
np.array([22.48, 22.74, 8.54]),
decimal=7)
np.testing.assert_almost_equal(
chromatic_adaptation_inverse_CMCCAT2000(
np.array([17.90511171, 22.75299363, 3.79837384]),
np.array([0.95045593, 1.00000000, 1.08905775]) * 100,
np.array([1.09846607, 1.00000000, 0.35582280]) * 100, 100,
100),
np.array([0.14222010, 0.23042768, 0.10495772]) * 100,
decimal=7)
np.testing.assert_almost_equal(
chromatic_adaptation_inverse_CMCCAT2000(
np.array([6.76564344, 5.86585763, 18.40577315]),
np.array([0.95045593, 1.00000000, 1.08905775]) * 100,
np.array([0.99144661, 1.00000000, 0.67315942]) * 100, 100,
100),
np.array([0.07818780, 0.06157201, 0.28099326]) * 100,
decimal=7)
def test_n_dimensional_chromatic_adaptation_inverse_CMCCAT2000(self):
"""
Test :func:`colour.adaptation.cmccat2000.\
chromatic_adaptation_inverse_CMCCAT2000` definition n-dimensional arrays
support.
"""
XYZ_c = np.array([19.52698326, 23.06833960, 24.97175229])
XYZ_w = np.array([111.15, 100.00, 35.20])
XYZ_wr = np.array([94.81, 100.00, 107.30])
L_A1 = 200
L_A2 = 200
XYZ = chromatic_adaptation_inverse_CMCCAT2000(
XYZ_c, XYZ_w, XYZ_wr, L_A1, L_A2
)
XYZ_c = np.tile(XYZ_c, (6, 1))
XYZ = np.tile(XYZ, (6, 1))
np.testing.assert_almost_equal(
chromatic_adaptation_inverse_CMCCAT2000(
XYZ_c, XYZ_w, XYZ_wr, L_A1, L_A2
),
XYZ,
decimal=7,
)
XYZ_w = np.tile(XYZ_w, (6, 1))
XYZ_wr = np.tile(XYZ_wr, (6, 1))
L_A1 = np.tile(L_A1, 6)
L_A2 = np.tile(L_A2, 6)
np.testing.assert_almost_equal(
chromatic_adaptation_inverse_CMCCAT2000(
XYZ_c, XYZ_w, XYZ_wr, L_A1, L_A2
),
XYZ,
decimal=7,
)
XYZ_c = np.reshape(XYZ_c, (2, 3, 3))
XYZ_w = np.reshape(XYZ_w, (2, 3, 3))
XYZ_wr = np.reshape(XYZ_wr, (2, 3, 3))
L_A1 = np.reshape(L_A1, (2, 3))
L_A2 = np.reshape(L_A2, (2, 3))
XYZ = np.reshape(XYZ, (2, 3, 3))
np.testing.assert_almost_equal(
chromatic_adaptation_inverse_CMCCAT2000(
XYZ_c, XYZ_w, XYZ_wr, L_A1, L_A2
),
XYZ,
decimal=7,
)
def test_nan_chromatic_adaptation_inverse_CMCCAT2000(self):
"""
Tests :func:`colour.adaptation.cmccat2000.\
chromatic_adaptation_inverse_CMCCAT2000` 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:
XYZ_c = np.array(case)
XYZ_w = np.array(case)
XYZ_wr = np.array(case)
L_A1 = case[0]
L_A2 = case[0]
chromatic_adaptation_inverse_CMCCAT2000(XYZ_c, XYZ_w, XYZ_wr, L_A1,
L_A2)