Document Detail

Quantitative studies of color constancy.
MedLine Citation:
PMID:  3204441     Owner:  NLM     Status:  MEDLINE    
In order to study color constancy, the color appearance of the center of a center-surround paradigm was measured by using multiple-alternative forced-response matching. The center was presented with (1) no surround, (2) an adjacent chromatic surround, or (3) a chromatic surround separated from the center by an achromatic gap. The center and the surrounds were presented under various simulated illuminants ranging from illuminant A to illuminant D75. We found that when no surround is present, color constancy fails; however, when surrounds are present, some degree of color constancy is displayed. We also found that color constancy is poor when chromatic induction is minimal. In addition, it was determined that, if the ratios of R, G, and B of the center to R, G, and B of the surround remain constant as the illuminant changes, color constancy results. (R, G, and B correspond to the outputs of the retinal color mechanisms).
K T Blackwell; G Buchsbaum
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics and image science     Volume:  5     ISSN:  0740-3232     ISO Abbreviation:  J Opt Soc Am A     Publication Date:  1988 Oct 
Date Detail:
Created Date:  1989-01-30     Completed Date:  1989-01-30     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8402086     Medline TA:  J Opt Soc Am A     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1772-80     Citation Subset:  IM    
Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia.
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MeSH Terms
Color Perception*
Color Perception Tests
Grant Support

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

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