日常室内環境での均一床色における色の面積効果

概要

論文の詳細を見る
Chromatic-area effect is a phenomenon by which color appearance of chromatic surface changes when a size (visual angle) of increases without any physical change of the surface. Lightness and saturation of a large chromatic area generally increase compared to a smaller chromatic area. We investigated this chromatic-area effect on homogeneous color of a room floor under light environment in the day (white daylight) and in the night (a fluorescent lamp). Observes performed color matching between a sheet of paper on the floor (2.5m×2.5m) and a color square field in 2 degree presented on the CRT display. The result indicates that even in natural indoor environment, saturation tend to be increased by the chromatic-area effect both light environment conditions, and color variation by the effect is generally larger in the night condition. On the contrary, hue is not changed and brightness (lightness) does not show any systematic change. When the data of matched color are plotted on the coordinates of normalized chromatic-opponent channel axes (r-g chromatic axis and y-b chromatic axis), the influence of chromatic-area effect for saturation is almost constant for all 8 hues used in this research.
2009-02-28