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Grading textile fastness. Part 3: Development of a new fastness formula for assessing change in colour †, ‡
Author(s) -
Cui G,
Luo M R,
Rigg B,
Butterworth M,
Dakin J
Publication year - 2004
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2004.tb00122.x
Subject(s) - observer (physics) , grading (engineering) , mathematics , computer science , algorithm , artificial intelligence , statistics , computer vision , engineering , physics , quantum mechanics , civil engineering
In Part 1 of this series of papers, a new method for assessing textile fastness using an imaging system based upon a digital camera was introduced. The results from the system agreed well with those obtained using conventional spectrophotometers. Although the ISO fastness formula for assessing change in colour gave reasonable correlation with the available visual data, the data sets included very few test specimens. In Part 2 a new formula was proposed. This markedly outperformed the current ISO staining formula, ISO 105‐A04, and its predictive errors were encouragingly few. Now, in Part 3, two new data sets have been examined, together with an earlier data set, and observer and instrumental variances evaluated. A new formula for colour change has been developed, and again its predictive errors found to be fewer than those of a panel of observers.