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. Author manuscript; available in PMC: 2009 Apr 21.
Published in final edited form as: Neural Comput. 2007 Oct;19(10):2610–2637. doi: 10.1162/neco.2007.19.10.2610

Table 1.

Illuminant Chromaticities

Illuminant CIE u′ CIE v′
D65 0.198 0.468
Blue 0.185 0.419
Yellow 0.226 0.508
Red 0.242 0.450

Notes: CIE u′v′ chromaticity coordinates of the four illuminants used in the trichomatic calculations. Chromaticity coordinates were computed over the wavelength range 390 nm to 730 nm, which is the range for which we had surface reflectance data from the Vrhel et al. (1994) data set.