Document Detail

Statistics of color-matching experimental data.
MedLine Citation:
PMID:  18305605     Owner:  NLM     Status:  In-Data-Review    
By assuming that color matches are normally distributed in XYZ space, we present a rigorous statistical technique to obtain regions of equally noticeable chromaticity differences. The probability density function of color matches in (x, y, Y) space is calculated according to standard techniques in probability theory. The geometry of the chromaticity thresholds is computed for various confidence levels alpha. Because of the asymmetry of the probability density function in (x, y, Y) space, the chromaticity thresholds are not symmetrical around the color center. The asymmetries depend on the color center, and they increase when high confidence levels (alpha < 0.32) are considered. It is our opinion that the technique proposed here can provide a useful tool for checking and evaluating deviations from the elliptic geometry of the chromaticity thresholds. It is formally demonstrated that regions of equally noticeable chromaticity differences are not ellipses when the normality hypothesis is assumed in XYZ space.
F Carre O; J M Zoido
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  38     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  1999 Jan 
Date Detail:
Created Date:  2008-02-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  208-18     Citation Subset:  -    
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