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Predicting the lightness of chromatic object colors using CIELAB
Author(s) -
Fairchild Mark D.,
Pirrotta Elizabeth
Publication year - 1991
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.5080160608
Subject(s) - lightness , achromatic lens , luminance , chromatic scale , mathematics , metric (unit) , artificial intelligence , object (grammar) , computer vision , matching (statistics) , computer science , statistics , optics , physics , combinatorics , economics , operations management
A metric of perceive lightness of object colors, L**, is derived and evaluated. This metric, based on CIELAB parameters, is designed to predict the Helmhltz‐Kohlrausch effect whereby chromatic object colors appear lighter than achromatic object of the some luminance factor. Models were fitted to published data and then tested with results from a new lightness‐matching experiment that is described in this article. The L** metric predicts perceived lightness to within the interobserver variability and provides a simple, practical measure of this appearance attribute.