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Industrial Pass/Fail Colour Matching. Part II – Methods of Fitting Tolerance Ellipsoids
Author(s) -
McDonald Roderick
Publication year - 1980
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.1478-4408.1980.tb03539.x
Subject(s) - ellipsoid , matching (statistics) , position (finance) , mathematics , space (punctuation) , correlation , mathematical analysis , computer science , statistics , geometry , geodesy , geology , finance , economics , operating system
Methods of fitting tolerance ellipsoids to the J & P Coats and to the Davidson and Friede matching data are described. The fitted ellipsoids vary in size according to their position in colour space. Various colour matching equations are derived to describe these variations and these are found to give better correlation with visual observation than other colour matching formulae.