空間照度変化に起因する色の見えのモード遷移

概要

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Mode transition thresholds between the surface-color and the aperture-color modes of chromatic stimuli were examined. The luminance of the chromatic stimuli on a CRT display was kept constant, and the illuminance of an experimental booth including a subject was varied. The relationship between the mode transition thresholds and brightness-to-luminance (B/L) values of the stimuli was examined in experiment 1, and the relationship between them under a different illuminant was examined in experiment 2. The results of experiment 1 showed that the mode transition thresholds changed with the stimulus chromaticity and correlated highly with the B/L values of the stimuli. Moreover, the values of the mode transition thresholds depended upon not only the stimulus chromaticity but also the experimental method. That is, the values obtained with the constant chromatic stimuli method adopted in the present study were smaller than those with the variable chromatic stimuli method in previous studies. In addition, the results of experiment 2 showed that the mode transition thresholds correlated highly with the B/L values irrespective of the illuminant chromaticity. The results of experiments 1 and 2 lead us to the conclusion that mode transition perception is closely connected with a brightness perception mechanism.
社団法人照明学会の論文
2004-08-01