Riemann正規座標系を用いた色弱補正方式(一般セッション,コミュニケーション・共生及び一般)

概要

論文の詳細を見る
Technical assistance for visual in particular color handicaped has become an important issue in IT barrier-free and universal design technology. Exact correction of color-weakness is difficult, however, since color perception characteristics vary greatly from different individuals and are not physically observable as well. Besides, current methods to correct color defect can not be applied to natural images. In this paper, we correct color-weakness of each individual by matching the color discrimination thresholds between the observer and color-normal observers. A new and exact correction algorithm is proposed using a method of building isometry or color-difference maps between color spaces. In particular, we calculate Riemannian metrics by measurement of color discrimination thresholds and build Riemann normal coordinates in both the color-weak and color-normal observers. Then, we estimate the global mapping between the color spaces of color-normal and color-weak. This map and its inverse map can be used to simulate and correct the colorweakness of the observer. Effect of the proposed method is confirmed by the psychological experiments using the SD method.
社団法人電子情報通信学会の論文
2008-05-05