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Small and moderate color differences. IV. Color‐difference‐perceptibility ellipses in surface‐color space
Author(s) -
Rich Danny C.,
Billmeyer Fred W.
Publication year - 1983
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.5080080107
Subject(s) - ellipse , orientation (vector space) , color difference , artificial intelligence , color space , computer vision , lightness , color discrimination , mathematics , color vision , optics , geometry , computer science , physics , image (mathematics) , enhanced data rates for gsm evolution
Moderate (0.5–1.5 CIELAB units) color differences in surface colors were scaled visually to obtain color‐dif‐ference‐perceptibility ellipses. The ellipse orientations appeared to be independent of the size of the color differences over the range indicated, and were consistent with literature results obtained with visual colorimeters. In the uivid greenish yellow region, the experimental ellipse orientation agreed with the Munsell spacing but not with the orientation of the CIELAB ellipse. In the deep greenish blue region, the experimental ellipse orientation agreed belter with the results of Wyszecki and Fielder than with the orientation of the MacAdam PGN ellipse.