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colorSpec (version 0.5-2)

ABC: Standard Illuminants A, B, and C (1931)

Description

ll{ A.1nm standard Illuminant A, 360 to 780 nm at 1 nm intervals B.5nm standard Illuminant B, 320 to 780 nm at 5 nm intervals C.5nm standard Illuminant C, 320 to 780 nm at 5 nm intervals }

Arguments

encoding

UTF-8

format

Each is a colorSpec object organized as a vector, with quantity equal to "power".

source

http://www.cvrl.org

Details

All of these have been divided by 100, to make the values at 560nm near 1 instead of 100.

References

Günther Wyszecki and W. S. Stiles. Color Science : Concepts and Methods, Quantitative Data and Formulae. Second Edition. Wiley-Interscience. 1982. ll{ A Table I(3.3.4) pp. 754-758. B Table II(3.3.4) pp. 759. C Table II(3.3.4) pp. 759. }

See Also

D50 D65

Examples

Run this code
summary(xyz1931.1nm)
white.point = product( D65.1nm, xyz1931.1nm, wave='auto' )

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