def test_n_dimensional_oetf_inverse_ARIBSTDB67(self):
"""
Tests :func:`colour.models.rgb.transfer_functions.arib_std_b67.\
oetf_inverse_ARIBSTDB67` definition n-dimensional arrays support.
"""
E_p = 0.212132034355964
E = oetf_inverse_ARIBSTDB67(E_p)
E_p = np.tile(E_p, 6)
E = np.tile(E, 6)
np.testing.assert_almost_equal(oetf_inverse_ARIBSTDB67(E_p),
E,
decimal=7)
E_p = np.reshape(E_p, (2, 3))
E = np.reshape(E, (2, 3))
np.testing.assert_almost_equal(oetf_inverse_ARIBSTDB67(E_p),
E,
decimal=7)
E_p = np.reshape(E_p, (2, 3, 1))
E = np.reshape(E, (2, 3, 1))
np.testing.assert_almost_equal(oetf_inverse_ARIBSTDB67(E_p),
E,
decimal=7)
def test_nan_oetf_inverse_ARIBSTDB67(self):
"""
Tests :func:`colour.models.rgb.transfer_functions.arib_std_b67.\
oetf_inverse_ARIBSTDB67` definition nan support.
"""
oetf_inverse_ARIBSTDB67(
np.array([-1.0, 0.0, 1.0, -np.inf, np.inf, np.nan]))
def test_domain_range_scale_oetf_inverse_ARIBSTDB67(self):
"""
Tests :func:`colour.models.rgb.transfer_functions.arib_std_b67.\
oetf_inverse_ARIBSTDB67` definition domain and range scale support.
"""
E_p = 0.212132034355964
E = oetf_inverse_ARIBSTDB67(E_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(oetf_inverse_ARIBSTDB67(E_p *
factor),
E * factor,
decimal=7)
def test_oetf_inverse_ARIBSTDB67(self):
"""
Tests :func:`colour.models.rgb.transfer_functions.arib_std_b67.\
oetf_inverse_ARIBSTDB67` definition.
"""
self.assertAlmostEqual(oetf_inverse_ARIBSTDB67(-0.25), -0.25, places=7)
self.assertAlmostEqual(oetf_inverse_ARIBSTDB67(0.0), 0.0, places=7)
self.assertAlmostEqual(oetf_inverse_ARIBSTDB67(0.212132034355964),
0.18,
places=7)
self.assertAlmostEqual(oetf_inverse_ARIBSTDB67(0.5), 1.0, places=7)
self.assertAlmostEqual(oetf_inverse_ARIBSTDB67(1.302858098046995),
64.0,
places=7)