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Metric coefficients for chromatic discrimination of surface colors
Author(s) -
Melgosa M.,
Romero J.,
Hita E.
Publication year - 1990
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/col.5080150409
Subject(s) - chromatic scale , mathematics , color difference , metric (unit) , diagram , mathematical analysis , statistics , combinatorics , artificial intelligence , computer science , enhanced data rates for gsm evolution , operations management , economics
The values of the coefficients of the metric tensor (g 11 , g 22 , and 2g 12 ) have been determined graphically at any point on the CIE‐1964 chromatic diagram, by using Luo and Rigg's chromatic discrimination data. Chromatic‐discrimination thresholds obtained by this method and those predicted by the CIELUV, CIELAB; and LABNHU color‐difference formulas are compared with different sets of experimental results. The predictions made by the formulas do not fit the experimental results as well as the graphical predictions.