Ideal illuminants for rod/L-cone color

John J. McCann

doi:10.1117/12.656567

16 January 2006 Ideal illuminants for rod/L-cone color

John J. McCann

Proceedings Volume 6058, Color Imaging XI: Processing, Hardcopy, and Applications; 605801 (2006) https://doi.org/10.1117/12.656567
Event: Electronic Imaging 2006, 2006, San Jose, California, United States

Abstract

Humans see multicolor complex images with illuminants that have very low amounts of 400 to 580nm light when there is enough long-wave light greater than 590nm. Interactions between rods and long-wave (L) cones generate these colors. They are observed when there is insufficient light for a threshold response from M- and S-cones. This paper measures the spectral emission of a wood fire and a wax candle and it compares these low-color temperature spectral radiant exitances with the sensitivities of rods and long-wave cones. The paper reviews some of the literature on the evolution of human cone pigments and the early use of fire by hominids.

Citation Download Citation

John J. McCann "Ideal illuminants for rod/L-cone color", Proc. SPIE 6058, Color Imaging XI: Processing, Hardcopy, and Applications, 605801 (16 January 2006); https://doi.org/10.1117/12.656567

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