Document Detail

Opponent-colors approach to color rendering.
MedLine Citation:
PMID:  7057289     Owner:  NLM     Status:  MEDLINE    
Starting with an opponent-colors formulation of color vision, two parameters, t and d, may be defined that express an illuminant's ability to realize red-green and blue-yellow contrasts of objects. For instance, calculation of t and d for daylight shows that on a gray day, color contrasts are actually reduced. By these measures, many common vapor-discharge illuminants systematically distort object colors. Because red-green contrasts contribute to border distinctness, and both types of color contrast contribute to brightness, such systematic distortions probably affect the overall clarity and brightness of what is perceived visually, Experimental data are consistent with this idea. In relation to color-constancy (retinex) experiments, it is approximately true that the visual system discounts the color of an illuminant but not its t and d.
J A Worthey
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the Optical Society of America     Volume:  72     ISSN:  0030-3941     ISO Abbreviation:  J Opt Soc Am     Publication Date:  1982 Jan 
Date Detail:
Created Date:  1982-04-22     Completed Date:  1982-04-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7503097     Medline TA:  J Opt Soc Am     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  74-82     Citation Subset:  IM    
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MeSH Terms
Color / standards
Color Perception / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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