Document Detail

Frequency of metamerism in natural scenes.
MedLine Citation:
PMID:  16985522     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Estimates of the frequency of metameric surfaces, which appear the same to the eye under one illuminant but different under another, were obtained from 50 hyperspectral images of natural scenes. The degree of metamerism was specified with respect to a color-difference measure after allowing for full chromatic adaptation. The relative frequency of metameric pairs of surfaces, expressed as a proportion of all pairs of surfaces in a scene, was very low. Depending on the criterion degree of metamerism, it ranged from about 10(-6) to 10(-4) for the largest illuminant change tested, which was from a daylight of correlated color temperature 25,000 K to one of 4000 K. But, given pairs of surfaces that were indistinguishable under one of these illuminants, the conditional relative frequency of metamerism was much higher, from about 10(-2) to 10(-1), sufficiently large to affect visual inferences about material identity.
David H Foster; Kinjiro Amano; Sérgio M C Nascimento; Michael J Foster
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics, image science, and vision     Volume:  23     ISSN:  1084-7529     ISO Abbreviation:  J Opt Soc Am A Opt Image Sci Vis     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-09-20     Completed Date:  2006-12-21     Revised Date:  2013-02-19    
Medline Journal Info:
Nlm Unique ID:  9800943     Medline TA:  J Opt Soc Am A Opt Image Sci Vis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2359-72     Citation Subset:  -    
Sensing, Imaging, and Signal Processing Group, School of Electrical and Electronic Engineering, University of Manchester, UK.
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Grant Support
064669//Wellcome Trust

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