Document Detail

Metameric color stimuli, fundamental metamers, and Wyszecki's metameric blacks.
MedLine Citation:
PMID:  7168455     Owner:  NLM     Status:  MEDLINE    
In 1953, Wyszecki described radiometric functions as composed of two components--a fundamental color-stimulus function and a metameric black function. The present paper discusses procedures for accomplishing the decomposition or resolution of any visual stimulus into these components. These methods rest on the fact that the color-stimulus space is a space of three dimensions and the metameric black space is orthogonal to it. Introduced and given specific attention here is the particular procedure wherein the stimulus-energy vector is premultiplied by A(A'A)-1A', A being any matrix of experimentally established color-mixture data with three linearly independent columns (primaries). This computation provides the fundamental metamer (as we shall call it) of the visual stimulus being analyzed. The difference between the stimulus-energy distribution and the fundamental metameric function provides the metameric black function. Examples of both types of functions are given and discussed.
J B Cohen; W E Kappauf
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American journal of psychology     Volume:  95     ISSN:  0002-9556     ISO Abbreviation:  Am J Psychol     Publication Date:  1982  
Date Detail:
Created Date:  1983-05-27     Completed Date:  1983-05-27     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0370513     Medline TA:  Am J Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  537-64     Citation Subset:  IM    
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MeSH Terms
Color Perception*
Discrimination Learning*

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

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