def test_domain_range_scale_IPT_to_XYZ(self):
"""
Tests :func:`colour.models.ipt.IPT_to_XYZ` definition domain and
range scale support.
"""
IPT = np.array([0.38426191, 0.38487306, 0.18886838])
XYZ = IPT_to_XYZ(IPT)
d_r = (('reference', 1), (1, 1), (100, 100))
for scale, factor in d_r:
with domain_range_scale(scale):
np.testing.assert_almost_equal(
IPT_to_XYZ(IPT * factor), XYZ * factor, decimal=7)
def test_n_dimensional_IPT_to_XYZ(self):
"""
Tests :func:`colour.models.ipt.IPT_to_XYZ` definition n-dimensional
support.
"""
IPT = np.array([0.38426191, 0.38487306, 0.18886838])
XYZ = IPT_to_XYZ(IPT)
IPT = np.tile(IPT, (6, 1))
XYZ = np.tile(XYZ, (6, 1))
np.testing.assert_almost_equal(IPT_to_XYZ(IPT), XYZ, decimal=7)
IPT = np.reshape(IPT, (2, 3, 3))
XYZ = np.reshape(XYZ, (2, 3, 3))
np.testing.assert_almost_equal(IPT_to_XYZ(IPT), XYZ, decimal=7)
def test_n_dimensional_IPT_to_XYZ(self):
"""
Tests :func:`colour.models.ipt.IPT_to_XYZ` definition n-dimensions
support.
"""
IPT = np.array([0.36571124, -0.11114798, 0.01594746])
XYZ = np.array([0.07049534, 0.10080000, 0.09558313])
np.testing.assert_almost_equal(IPT_to_XYZ(IPT), XYZ, decimal=7)
IPT = np.tile(IPT, (6, 1))
XYZ = np.tile(XYZ, (6, 1))
np.testing.assert_almost_equal(IPT_to_XYZ(IPT), XYZ, decimal=7)
IPT = np.reshape(IPT, (2, 3, 3))
XYZ = np.reshape(XYZ, (2, 3, 3))
np.testing.assert_almost_equal(IPT_to_XYZ(IPT), XYZ, decimal=7)
def test_nan_IPT_to_XYZ(self):
"""Test :func:`colour.models.ipt.IPT_to_XYZ` 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:
IPT = np.array(case)
IPT_to_XYZ(IPT)
def test_IPT_to_XYZ(self):
"""
Tests :func:`colour.models.ipt.IPT_to_XYZ` definition.
"""
np.testing.assert_almost_equal(
IPT_to_XYZ(np.array([0.38426191, 0.38487306, 0.18886838])),
np.array([0.20654008, 0.12197225, 0.05136952]),
decimal=7)
np.testing.assert_almost_equal(
IPT_to_XYZ(np.array([0.49437481, -0.19251742, 0.18080304])),
np.array([0.14222010, 0.23042768, 0.10495772]),
decimal=7)
np.testing.assert_almost_equal(
IPT_to_XYZ(np.array([0.35167774, -0.07525627, -0.30921279])),
np.array([0.07818780, 0.06157201, 0.28099326]),
decimal=7)
def test_IPT_to_XYZ(self):
"""
Tests :func:`colour.models.ipt.IPT_to_XYZ` definition.
"""
np.testing.assert_almost_equal(
IPT_to_XYZ(np.array([1.00300825, 0.01906918, -0.01369292])),
np.array([0.96907232, 1.00000000, 1.12179215]),
decimal=7)
np.testing.assert_almost_equal(
IPT_to_XYZ(np.array([0.73974548, 0.95333412, 1.71951212])),
np.array([1.92001986, 1.00000000, -0.12413470]),
decimal=7)
np.testing.assert_almost_equal(
IPT_to_XYZ(np.array([1.06406598, -0.08075812, -0.39625384])),
np.array([1.01316770, 1.00000000, 2.11217686]),
decimal=7)
