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Modification to the JPC79 Colour–difference Formula
Author(s) -
Clarke F J J,
McDonald R,
Rigg B
Publication year - 1984
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1984.tb00969.x
Subject(s) - lightness , weighting , colour difference , color difference , mathematics , significant difference , calculus (dental) , computer science , statistics , optics , artificial intelligence , physics , orthodontics , medicine , enhanced data rates for gsm evolution , acoustics
The JPC79 colour–difference formula has represented a substantial improvement over earlier formulae and is being applied successfully in industrial shade passing. Modifications are described which overcome certain problems and, to some extent, simplify the formula. With available experimental data, the modified version performed even better than the original formula. Perceptibility data are fitted better by increasing the JPC79 lightness weighting by a factor of two. The new formula, designated CMC (: c), has the best overall performance of any formula so far published.
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