3S-3 写真にみられる色の恒常性(3S 色彩イメージ,口頭発表,第41回全国大会要旨集)

概要

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We explained why the human visual system has color constancy in one case and does not have it in the other case, by using the concept of the recognized visual space of illumination: RVSI. We built a room with interchangeable illumination covering the color spectrum from white to orange. Thirteen pictures were prepared for the different colors of the room. In the first experiment the room was illuminated with one color and a subject looked at the room. Afterward, the subject had to look at thirteen pictures on the D-up viewer one by one, comparative with the color illumination of the subject's room. Before doing the experiment, we assumed that the subject would select the picture that was taken under the same illumination as in the subject's room, if the color constancy took place in the picture. The result confirmed our expectation. In the second experiment we showed the thirteen pictures one by one in a normal room illuminated by the daylight type fluorescent lamp. The subject was asked to pick up a picture that most resembled to the subject room's color. We assumed that the picture will be one that should be quite white. Our assumption was confirmed by the experiment.
2010-05-01