Exact compensation of color-weakness with discrimination threshold matching

Authors:
Rika Mochizuki;Satoshi Oshima;Reiner Lenz;Jinhui Chao
Affiliations:
NTT Cyber Solutions Laboratories, Hikarinooka, Yokosuka-shi, Kanagawa and Dept. of Science and Engineering, Chuo University, Kasuga, Bunkyo-ku, Tokyo, Japan;Dept. of Science and Engineering, Chuo University, Kasuga, Bunkyo-ku, Tokyo, Japan;Dept. Science and Engineering, Linköping University, Norrköping, Sweden;Dept. of Science and Engineering, Chuo University, Kasuga, Bunkyo-ku, Tokyo, Japan
Venue:
UAHCI'11 Proceedings of the 6th international conference on Universal access in human-computer interaction: applications and services - Volume Part IV
Year:
2011

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Abstract

In this paper we describe a novel compensation algorithm for color-weakness based on a new, objective criterion to compare normal observers and color-weak observers, using Riemann geometric properties of color spaces. The criterion is to match the color discrimination thresholds of average, normal observers and a colorweak observer. The method uses local and global isometry theory and provides the two groups of observers with the same color-difference experience. A one-dimensional compensation and simulation of color-weakness is shown as an application of the general approach to the Brettel color-blind model. The 2D and 3D compensations and simulations are illustrated in chromaticity planes and full color spaces.