colour.colorimetry.dataset.cmfs Module¶

Colour Matching Functions Spectral Power Distributions¶

Defines various colour matching functions involved in spectral computations.

The colour matching functions data is in the form of a dict of colour.colorimetry.spectrum.TriSpectralPowerDistribution classes as follows:

{'name': TriSpectralPowerDistribution,
...,
'name': TriSpectralPowerDistribution}

The following colour matching functions are available:

Stockman & Sharpe 2 Degree Cone Fundamentals [1]
Stockman & Sharpe 10 Degree Cone Fundamentals [1]
Wright & Guild 1931 2 Degree RGB CMFs [2]
Stiles & Burch 1955 2 Degree RGB CMFs [3]
Stiles & Burch 1959 10 Degree RGB CMFs [4]
CIE 1931 2 Degree Standard Observer [5]
CIE 1964 10 Degree Standard Observer [5]
CIE 2012 10 Degree Standard Observer [6]
CIE 2012 2 Degree Standard Observer [6]

Notes

Stockman and Sharpe LMS colour matching functions are provided at 1 nm steps.
Wright & Guild and Stiles & Burch CIE RGB colour matching functions are provided at 5 nm steps.
CIE Standard Observers XYZ colour matching functions are provided at 5 nm steps.

References

[1]	(1, 2) CVRL. (n.d.). Cone Fundamentals. Retrieved June 23, 2014, from http://www.cvrl.org/cones.htm

[2]	Broadbent, A. D. (2009). Calculation from the original experimental data of the CIE 1931 RGB standard observer spectral chromaticity co-ordinates and color matching functions. Retrieved June 12, 2014, from http://www.cis.rit.edu/mcsl/research/1931.php

[3]	CVRL. (n.d.). Stiles & Burch individual 10-deg colour matching data. Retrieved February 24, 2014, from http://www.cvrl.org/stilesburch10_ind.htm

[4]	CVRL. (n.d.). Stiles & Burch individual 2-deg colour matching data. Retrieved February 24, 2014, from http://www.cvrl.org/stilesburch2_ind.htm

[5]	(1, 2) CVRL. (n.d.). Older CIE Standards. Retrieved February 24, 2014, from http://cvrl.ioo.ucl.ac.uk/cie.htm

[6]	(1, 2) CVRL. (n.d.). New CIE XYZ functions transformed from the CIE (2006) LMS functions. Retrieved February 24, 2014, from http://cvrl.ioo.ucl.ac.uk/ciexyzpr.htm

colour.colorimetry.dataset.cmfs.LMS_CMFS = CaseInsensitiveMapping({u'Stockman & Sharpe 2 Degree Cone Fundamentals': <colour.colorimetry.cmfs.LMS_ConeFundamentals object at 0x2b3679a91f50>, u'Stockman & Sharpe 10 Degree Cone Fundamentals': <colour.colorimetry.cmfs.LMS_ConeFundamentals object at 0x2b3679ab5110>})¶

LMS colour matching functions.

LMS_CMFS : CaseInsensitiveMapping: {‘Stockman & Sharpe 2 Degree Cone Fundamentals’, ‘Stockman & Sharpe 10 Degree Cone Fundamentals’}

colour.colorimetry.dataset.cmfs.RGB_CMFS = CaseInsensitiveMapping({u'Stiles & Burch 1959 10 Degree RGB CMFs': <colour.colorimetry.cmfs.RGB_ColourMatchingFunctions object at 0x2b3679ab5510>, u'Wright & Guild 1931 2 Degree RGB CMFs': <colour.colorimetry.cmfs.RGB_ColourMatchingFunctions object at 0x2b3679ab5390>, u'Stiles & Burch 1955 2 Degree RGB CMFs': <colour.colorimetry.cmfs.RGB_ColourMatchingFunctions object at 0x2b3679ab5290>})¶

CIE RGB colour matching functions.

RGB_CMFS : CaseInsensitiveMapping: {‘Wright & Guild 1931 2 Degree RGB CMFs’, ‘Stiles & Burch 1955 2 Degree RGB CMFs’, ‘Stiles & Burch 1959 10 Degree RGB CMFs’}

colour.colorimetry.dataset.cmfs.STANDARD_OBSERVERS_CMFS = CaseInsensitiveMapping({u'CIE 1931 2 Degree Standard Observer': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5690>, u'cie_10_1964': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5650>, u'CIE 2012 10 Degree Standard Observer': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5810>, u'CIE 2012 2 Degree Standard Observer': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5850>, u'CIE 1964 10 Degree Standard Observer': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5650>, u'cie_2_1931': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5690>})¶

CIE Standard Observers XYZ colour matching functions.

STANDARD_OBSERVERS_CMFS : CaseInsensitiveMapping: {‘CIE 1931 2 Degree Standard Observer’, ‘CIE 1964 10 Degree Standard Observer’, ‘CIE 2012 2 Degree Standard Observer’, ‘CIE 2012 10 Degree Standard Observer’}

Aliases:

‘cie_2_1931’: ‘CIE 1931 2 Degree Standard Observer’
‘cie_10_1964’: ‘CIE 1964 10 Degree Standard Observer’

colour.colorimetry.dataset.cmfs.CMFS = CaseInsensitiveMapping({u'Stockman & Sharpe 2 Degree Cone Fundamentals': <colour.colorimetry.cmfs.LMS_ConeFundamentals object at 0x2b3679a91f50>, u'CIE 1931 2 Degree Standard Observer': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5690>, u'CIE 2012 10 Degree Standard Observer': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5810>, u'cie_10_1964': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5650>, u'Stockman & Sharpe 10 Degree Cone Fundamentals': <colour.colorimetry.cmfs.LMS_ConeFundamentals object at 0x2b3679ab5110>, u'Wright & Guild 1931 2 Degree RGB CMFs': <colour.colorimetry.cmfs.RGB_ColourMatchingFunctions object at 0x2b3679ab5390>, u'CIE 2012 2 Degree Standard Observer': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5850>, u'Stiles & Burch 1959 10 Degree RGB CMFs': <colour.colorimetry.cmfs.RGB_ColourMatchingFunctions object at 0x2b3679ab5510>, u'cie_2_1931': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5690>, u'CIE 1964 10 Degree Standard Observer': <colour.colorimetry.cmfs.XYZ_ColourMatchingFunctions object at 0x2b3679ab5650>, u'Stiles & Burch 1955 2 Degree RGB CMFs': <colour.colorimetry.cmfs.RGB_ColourMatchingFunctions object at 0x2b3679ab5290>})¶

Aggregated colour matching functions.

CMFS : CaseInsensitiveMapping: {‘Stockman & Sharpe 10 Degree Cone Fundamentals’, ‘Stockman & Sharpe 2 Degree Cone Fundamentals’, ‘Wright & Guild 1931 2 Degree RGB CMFs’, ‘Stiles & Burch 1955 2 Degree RGB CMFs’, ‘Stiles & Burch 1959 10 Degree RGB CMFs’, ‘CIE 1931 2 Degree Standard Observer’, ‘CIE 1964 10 Degree Standard Observer’, ‘CIE 2012 2 Degree Standard Observer’, ‘CIE 2012 10 Degree Standard Observer’}