def tcs_colorimetry_data(
sd_irradiance: SpectralDistribution,
sds_tcs: MultiSpectralDistributions,
cmfs: MultiSpectralDistributions,
) -> Tuple[TCS_ColorimetryData_CIE2017, ...]:
"""
Return the *test colour samples* colorimetry data under given test light
source or reference illuminant spectral distribution for the
*CIE 2017 Colour Fidelity Index* (CFI) computations.
Parameters
----------
sd_irradiance
Test light source or reference illuminant spectral distribution, i.e.
the irradiance emitter.
sds_tcs
*Test colour samples* spectral distributions.
cmfs
Standard observer colour matching functions.
Returns
-------
:class:`tuple`
*Test colour samples* colorimetry data under the given test light
source or reference illuminant spectral distribution.
Examples
--------
>>> delta_E_to_R_f(4.4410383190) # doctest: +ELLIPSIS
70.1208254...
"""
XYZ_w = sd_to_XYZ(sd_ones(), cmfs, sd_irradiance)
Y_b = 20
L_A = 100
surround = VIEWING_CONDITIONS_CIECAM02["Average"]
tcs_data = []
for sd_tcs in sds_tcs.to_sds():
XYZ = sd_to_XYZ(sd_tcs, cmfs, sd_irradiance)
CAM = XYZ_to_CIECAM02(XYZ, XYZ_w, L_A, Y_b, surround, True)
JMh = tstack([CAM.J, CAM.M, CAM.h])
Jpapbp = JMh_CIECAM02_to_CAM02UCS(JMh)
tcs_data.append(
TCS_ColorimetryData_CIE2017(sd_tcs.name, XYZ, CAM, JMh, Jpapbp))
return tuple(tcs_data)
def test_JMh_CIECAM02_to_UCS_Luo2006(self):
"""
Test :func:`colour.models.cam02_ucs.JMh_CIECAM02_to_UCS_Luo2006`
definition.
"""
np.testing.assert_almost_equal(
JMh_CIECAM02_to_UCS_Luo2006(self._JMh,
COEFFICIENTS_UCS_LUO2006["CAM02-LCD"]),
np.array([54.90433134, -0.08450395, -0.06854831]),
decimal=7,
)
np.testing.assert_almost_equal(
JMh_CIECAM02_to_UCS_Luo2006(self._JMh,
COEFFICIENTS_UCS_LUO2006["CAM02-LCD"]),
JMh_CIECAM02_to_CAM02LCD(self._JMh),
decimal=7,
)
np.testing.assert_almost_equal(
JMh_CIECAM02_to_UCS_Luo2006(self._JMh,
COEFFICIENTS_UCS_LUO2006["CAM02-SCD"]),
np.array([54.90433134, -0.08436178, -0.06843298]),
decimal=7,
)
np.testing.assert_almost_equal(
JMh_CIECAM02_to_UCS_Luo2006(self._JMh,
COEFFICIENTS_UCS_LUO2006["CAM02-SCD"]),
JMh_CIECAM02_to_CAM02SCD(self._JMh),
decimal=7,
)
np.testing.assert_almost_equal(
JMh_CIECAM02_to_UCS_Luo2006(self._JMh,
COEFFICIENTS_UCS_LUO2006["CAM02-UCS"]),
np.array([54.90433134, -0.08442362, -0.06848314]),
decimal=7,
)
np.testing.assert_almost_equal(
JMh_CIECAM02_to_UCS_Luo2006(self._JMh,
COEFFICIENTS_UCS_LUO2006["CAM02-UCS"]),
JMh_CIECAM02_to_CAM02UCS(self._JMh),
decimal=7,
)