def test_n_dimensional_delta_E_CIE1994(self):
"""
Tests :func:`colour.difference.delta_e.delta_E_CIE1994` definition
n-dimensional arrays support.
"""
Lab_1 = np.array([100.00000000, 21.57210357, 272.22819350])
Lab_2 = np.array([100.00000000, 426.67945353, 72.39590835])
delta_E = 83.779225500887094
np.testing.assert_almost_equal(delta_E_CIE1994(Lab_1, Lab_2),
delta_E,
decimal=7)
Lab_1 = np.tile(Lab_1, (6, 1))
Lab_2 = np.tile(Lab_2, (6, 1))
delta_E = np.tile(delta_E, 6)
np.testing.assert_almost_equal(delta_E_CIE1994(Lab_1, Lab_2),
delta_E,
decimal=7)
Lab_1 = np.reshape(Lab_1, (2, 3, 3))
Lab_2 = np.reshape(Lab_2, (2, 3, 3))
delta_E = np.reshape(delta_E, (2, 3))
np.testing.assert_almost_equal(delta_E_CIE1994(Lab_1, Lab_2),
delta_E,
decimal=7)
def test_n_dimensional_delta_E_CIE1994(self):
"""
Tests :func:`colour.difference.delta_e.delta_E_CIE1994` definition
n-dimensional arrays support.
"""
Lab1 = np.array([100.00000000, 21.57210357, 272.22819350])
Lab2 = np.array([100.00000000, 426.67945353, 72.39590835])
delta_E = 88.335553057506502
np.testing.assert_almost_equal(
delta_E_CIE1994(Lab1, Lab2),
delta_E,
decimal=7)
Lab1 = np.tile(Lab1, (6, 1))
Lab2 = np.tile(Lab2, (6, 1))
delta_E = np.tile(delta_E, 6)
np.testing.assert_almost_equal(
delta_E_CIE1994(Lab1, Lab2),
delta_E,
decimal=7)
Lab1 = np.reshape(Lab1, (2, 3, 3))
Lab2 = np.reshape(Lab2, (2, 3, 3))
delta_E = np.reshape(delta_E, (2, 3))
np.testing.assert_almost_equal(
delta_E_CIE1994(Lab1, Lab2),
delta_E,
decimal=7)
def test_nan_delta_E_CIE1994(self):
"""
Tests :func:`colour.difference.delta_e.delta_E_CIE1994` 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:
Lab_1 = np.array(case)
Lab_2 = np.array(case)
delta_E_CIE1994(Lab_1, Lab_2)
def test_nan_delta_E_CIE1994(self):
"""
Tests :func:`colour.difference.delta_e.delta_E_CIE1994` 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:
Lab1 = np.array(case)
Lab2 = np.array(case)
delta_E_CIE1994(Lab1, Lab2)
def test_domain_range_scale_delta_E_CIE1994(self):
"""
Tests :func:`colour.difference.delta_e.delta_E_CIE1994` definition
domain and range scale support.
"""
Lab_1 = np.array([100.00000000, 21.57210357, 272.22819350])
Lab_2 = np.array([100.00000000, 426.67945353, 72.39590835])
delta_E = delta_E_CIE1994(Lab_1, Lab_2)
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(
delta_E_CIE1994(Lab_1 * factor, Lab_2 * factor),
delta_E,
decimal=7)
def test_domain_range_scale_delta_E_CIE1994(self):
"""
Tests :func:`colour.difference.delta_e.delta_E_CIE1994` definition
domain and range scale support.
"""
Lab_1 = np.array([100.00000000, 21.57210357, 272.22819350])
Lab_2 = np.array([100.00000000, 426.67945353, 72.39590835])
delta_E = delta_E_CIE1994(Lab_1, Lab_2)
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(
delta_E_CIE1994(Lab_1 * factor, Lab_2 * factor),
delta_E,
decimal=7)
def test_delta_E_CIE1994(self):
"""Test :func:`colour.difference.delta_e.delta_E_CIE1994` definition."""
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 426.67945353, 72.39590835]),
),
83.779225500887094,
places=7,
)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 74.05216981, 276.45318193]),
),
10.053931954553839,
places=7,
)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 8.32281957, -73.58297716]),
),
57.535453706667425,
places=7,
)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 426.67945353, 72.39590835]),
textiles=True,
),
88.335553057506502,
places=7,
)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 74.05216981, 276.45318193]),
textiles=True,
),
10.612657890048272,
places=7,
)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 8.32281957, -73.58297716]),
textiles=True,
),
60.368687261063329,
places=7,
)
def test_delta_E_CIE1994(self):
"""
Tests :func:`colour.difference.delta_e.delta_E_CIE1994` definition.
"""
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 426.67945353, 72.39590835])),
88.3355530575,
places=7)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 74.05216981, 276.45318193])),
10.61265789,
places=7)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 8.32281957, -73.58297716])),
60.3686872611,
places=7)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 426.67945353, 72.39590835]),
textiles=False),
83.7792255009,
places=7)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 74.05216981, 276.45318193]),
textiles=False),
10.0539319546,
places=7)
self.assertAlmostEqual(
delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 8.32281957, -73.58297716]),
textiles=False),
57.5354537067,
places=7)
def test_delta_E_CIE1994(self):
"""
Tests :func:`colour.difference.delta_e.delta_E_CIE1994` definition.
"""
self.assertAlmostEqual(delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 426.67945353, 72.39590835])),
88.3355530575,
places=7)
self.assertAlmostEqual(delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 74.05216981, 276.45318193])),
10.61265789,
places=7)
self.assertAlmostEqual(delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 8.32281957, -73.58297716])),
60.3686872611,
places=7)
self.assertAlmostEqual(delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 426.67945353, 72.39590835]),
textiles=False),
83.7792255009,
places=7)
self.assertAlmostEqual(delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 74.05216981, 276.45318193]),
textiles=False),
10.0539319546,
places=7)
self.assertAlmostEqual(delta_E_CIE1994(
np.array([100.00000000, 21.57210357, 272.22819350]),
np.array([100.00000000, 8.32281957, -73.58297716]),
textiles=False),
57.5354537067,
places=7)