黒みの感性的評価

－ 工学系と美術系の被験者群による比較 －

抄録

We conducted two experiments. In the first experiment, influence of the luminance of surround annulus field Ls on perceived blackness of the central circular field of which luminance was fixed at Lc was investigated. Scaling procedure from “bright gray” to “deep black” was used. In the second experiment, perceived blackness of the black area in the images of masterpieces was evaluated using the same scaling procedure. Results of the first experiment showed that perceived blackness of the central field becomes more blackish and deeper as the contrast between Lc and Ls increases. Results of the second experiment showed that perceived blackness of black area surrounded by relatively bright area in artistic images is stronger than the perceived blackness given by the same luminance contrast between the center and surround in a concentric circular configuration. Also, results indicate that the observers of Art majors seem to be more sensitive in perceived blackness than the observers of Engineering majors.