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Proceedings Paper

Weighting function for the measurement of lightness differences in gonioapparent and dark colors
Author(s): Allan B. J. Rodrigues; John S. Locke
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Paper Abstract

In gonioapparent colors, as Lightness increases, larger ΔL*s as measured by CIE76 are visually acceptable. This study used Logit Analysis of visual observations of lightness difference to determine this dependency of ΔL* on absolute L*. A linear functionality was found. Non-linearity of this function for very dark colors observed at flop angles, where sparkle is not observed lead to a further study of dark solid colors.

Paper Details

Date Published: 6 June 2002
PDF: 4 pages
Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); doi: 10.1117/12.464603
Show Author Affiliations
Allan B. J. Rodrigues, DuPont Performance Coatings (United States)
John S. Locke, DuPont Performance Coatings (United States)

Published in SPIE Proceedings Vol. 4421:
9th Congress of the International Colour Association
Robert Chung; Allan Rodrigues, Editor(s)

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