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Proceedings Paper

Ideal illuminants for rod/L-cone color
Author(s): John J. McCann
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Paper 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.

Paper Details

Date Published: 16 January 2006
PDF: 8 pages
Proc. SPIE 6058, Color Imaging XI: Processing, Hardcopy, and Applications, 605801 (16 January 2006); doi: 10.1117/12.656567
Show Author Affiliations
John J. McCann, McCann Imaging (United States)

Published in SPIE Proceedings Vol. 6058:
Color Imaging XI: Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

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