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Parametric effects on surface color‐difference evaluation at threshold
Author(s) -
Witt Klaus
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.5080150404
Subject(s) - achromatic lens , lightness , hue , ellipsoid , color difference , mathematics , optics , significant difference , artificial intelligence , physics , statistics , computer science , enhanced data rates for gsm evolution , astronomy
Experiments on thresholds of perceptible color‐difference at CIE color centers have been extended for the parametric effects of the lightness of an achromatic surround and of a separating gap between a pair of painted specimens. Components of perceived color‐difference (hue, chroma, lightness) approximately could be assigned to geometric elements of threshold ellipsoids and used for component analysis. A study of ellipsoid and city‐block modelling revealed ellipsoid to be slightly better. An increase of total threshold by changed lightness of the achromatic surround was found only in the case of the dark CIE Blue, but in every case a gap increased threshold the darker the CIE color center. The results can be used for a correction in color‐difference evaluation.