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A colour‐difference formula for assessing large colour differences
Author(s) -
Guan Shing–Sheng,
Luo M. Ronnier
Publication year - 1999
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/(sici)1520-6378(199910)24:5<344::aid-col6>3.0.co;2-x
Subject(s) - colour difference , mathematics , color difference , significant difference , mean difference , statistics , artificial intelligence , just noticeable difference , pattern recognition (psychology) , computer science , optics , physics , enhanced data rates for gsm evolution , confidence interval
An experiment was carried out to study large colour differences. Two‐hundred‐and‐ninety‐two wool pairs were prepared with an average difference of 12 CIELAB Δ E units. Visual assessments were conducted using gray scale and pair comparison psychophysical methods by a panel of 20 observers. The results from the two psychophysical methods were used to test colour‐difference formulae and compare their differences. The gray scale results were also used to compare with the other large colour‐difference data sets, i.e., BFB, OSA, and WW. The present results together with part of the other data sets were combined to form a single data set. A modified CIELAB colour‐difference formula was developed having a structure similar to that of CIE94. It is named the GLAB colour‐difference formula. © 1999 John Wiley & Sons, Inc. Col Res Appl, 24, 344–355, 1999