def test_CIE_standard_illuminant_A_function(self):
"""
Tests :func:`colour.colorimetry.illuminants.\
CIE_standard_illuminant_A_function` definition.
"""
np.testing.assert_almost_equal(CIE_standard_illuminant_A_function(
np.arange(360, 830, 5)),
A_DATA,
decimal=7)
def setUp(self):
"""
Initialises common tests attributes.
"""
self._spd = SAMPLE_SPD.copy()
self._cmfs = CMFS['CIE 1931 2 Degree Standard Observer']
wl = self._cmfs.shape.range()
self._A = SpectralPowerDistribution(dict(
zip(wl, CIE_standard_illuminant_A_function(wl))),
name='A (360, 830, 1)')
def test_tristimulus_weighting_factors_ASTME202211(self):
"""
Tests :func:`colour.colorimetry.tristimulus.\
tristimulus_weighting_factors_ASTME202211` definition.
Notes
-----
:attr:`A_CIE_1964_10_10_TWF`, :attr:`A_CIE_1964_10_20_TWF` and
:attr:`D65_CIE_1931_2_20_TWF` attributes data is matching [1]_.
References
----------
.. [1] ASTM International. (2015). ASTM E308–15 - Standard Practice
for Computing the Colors of Objects by Using the CIE System,
1–47. doi:10.1520/E0308-15
"""
cmfs = CMFS.get('CIE 1964 10 Degree Standard Observer')
wl = cmfs.shape.range()
A = SpectralPowerDistribution(
'A (360, 830, 1)',
dict(zip(wl, CIE_standard_illuminant_A_function(wl))))
twf = tristimulus_weighting_factors_ASTME202211(
cmfs, A, SpectralShape(360, 830, 10))
np.testing.assert_almost_equal(
np.round(twf, 3),
A_CIE_1964_10_10_TWF,
decimal=3)
twf = tristimulus_weighting_factors_ASTME202211(
cmfs, A, SpectralShape(360, 830, 20))
np.testing.assert_almost_equal(
np.round(twf, 3),
A_CIE_1964_10_20_TWF,
decimal=3)
cmfs = CMFS.get('CIE 1931 2 Degree Standard Observer')
D65 = ILLUMINANTS_RELATIVE_SPDS['D65'].clone().align(
cmfs.shape, interpolation_method='Linear')
twf = tristimulus_weighting_factors_ASTME202211(
cmfs, D65, SpectralShape(360, 830, 20))
np.testing.assert_almost_equal(
np.round(twf, 3),
D65_CIE_1931_2_20_TWF,
decimal=3)
def test_tristimulus_weighting_factors_ASTME202211(self):
"""
Tests :func:`colour.colorimetry.tristimulus.\
tristimulus_weighting_factors_ASTME202211` definition.
Notes
-----
:attr:`A_CIE_1964_10_10_TWF`, :attr:`A_CIE_1964_10_20_TWF` and
:attr:`D65_CIE_1931_2_20_TWF` attributes data is matching
:cite:`ASTMInternational2015b`.
References
----------
- :cite:`ASTMInternational2015b`
"""
cmfs = CMFS['CIE 1964 10 Degree Standard Observer']
wl = cmfs.shape.range()
A = SpectralPowerDistribution(dict(
zip(wl, CIE_standard_illuminant_A_function(wl))),
name='A (360, 830, 1)')
twf = tristimulus_weighting_factors_ASTME202211(
cmfs, A, SpectralShape(360, 830, 10))
np.testing.assert_almost_equal(np.round(twf, 3),
A_CIE_1964_10_10_TWF,
decimal=3)
twf = tristimulus_weighting_factors_ASTME202211(
cmfs, A, SpectralShape(360, 830, 20))
np.testing.assert_almost_equal(np.round(twf, 3),
A_CIE_1964_10_20_TWF,
decimal=3)
cmfs = CMFS['CIE 1931 2 Degree Standard Observer']
D65 = ILLUMINANTS_RELATIVE_SPDS['D65'].copy().align(
cmfs.shape, interpolator=LinearInterpolator)
twf = tristimulus_weighting_factors_ASTME202211(
cmfs, D65, SpectralShape(360, 830, 20))
np.testing.assert_almost_equal(np.round(twf, 3),
D65_CIE_1931_2_20_TWF,
decimal=3)