colour.CCS_ILLUMINANTS#
- colour.CCS_ILLUMINANTS = CanonicalMapping({'CIE 1931 2 Degree Standard Observer': ..., 'CIE 1964 10 Degree Standard Observer': ..., 'cie_2_1931': ..., 'cie_10_1964': ...})#
Chromaticity coordinates of the illuminants.
Warning
DCI-P3 illuminant has no associated spectral distribution. DCI has no official reference spectral measurement for this whitepoint. The closest matching spectral distribution is Kinoton 75P projector.
Notes
CIE Illuminant D Series D60 illuminant chromaticity coordinates were computed as follows:
CCT = 6000 * 1.4388 / 1.438 xy = colour.temperature.CCT_to_xy_CIE_D(CCT) sd = colour.sd_CIE_illuminant_D_series(xy) colour.XYZ_to_xy( colour.sd_to_XYZ( sd, colour.MSDS_CMFS['CIE 1964 10 Degree Standard Observer']) / 100.0)
CIE Illuminant D Series D50 illuminant and CIE Standard Illuminant D Series D65 chromaticity coordinates are rounded to 4 decimals as given in the typical RGB colourspaces litterature. Their chromaticity coordinates as given in [CIET14804f] are (0.34567, 0.35851) and (0.31272, 0.32903) respectively.
CIE illuminants with chromaticity coordinates not defined in the reference [Wikipedia06b] have been calculated using their correlated colour temperature and
colour.temperature.CCT_to_xy_CIE_D()
colour.sd_CIE_illuminant_D_series()
and / orcolour.sd_to_XYZ()
definitions.ICC D50 chromaticity coordinates were computed with
colour.XYZ_to_xy()
definition from the CIE XYZ tristimulus values as given by ICC: [96.42, 100.00, 82.49].
References
[CIET14804f], [DigitalCInitiatives07], [InternationalOfStandardization02], [InternationalCConsortium10], [TheAoMPAaSciencesScienceaTCouncilAcademyCESACESPSubcommittee14b], [Wikipedia06b]
Aliases:
‘cie_2_1931’: ‘CIE 1931 2 Degree Standard Observer’
‘cie_10_1964’: ‘CIE 1964 10 Degree Standard Observer’