Premium
The Weber fraction and asymmetries in luminance thresholds
Author(s) -
Carreño Fernando,
Zoido Jesús Manuel
Publication year - 2002
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/col.10079
Subject(s) - luminance , fraction (chemistry) , chromaticity , matching (statistics) , mathematics , probability density function , artificial intelligence , computer science , statistics , chromatography , chemistry
Presented in this article is a method for the determination of the Weber fraction by analyzing data obtained from color‐matching experiments. The method is based on a rigorous analysis of the probability density function derived from discrimination judgments made in the xyY space. Analysis shows the thresholds for luminance increments and decrements are shown to be different and asymmetric and the Weber fraction to depend on the target's level of luminance and chromaticity. © 2002 Wiley Periodicals, Inc. Col Res Appl, 27, 330–334, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.10079