ILLUMINATION CONDITION TO PERCEIVE EXACT COLOR IN PICTURES

在日光照明下拍摄的照片可以在有钨丝灯照明的房间中观察到。观察者是否看到了摄影师所经历的照片中的颜色？公认的视觉空间照明RVSI的概念预测，它不是这样的，图片必须修改为预期的颜色感知。实验一：RVSI中识别轴的移动，采用均匀白色的简单刺激，在12种不同颜色的光照下进行颜色判断。实验2：老年人的色觉和年轻人的色觉随着年龄的增长，由于晶状体变黄，色觉发生变化。Appr ...更多信息 在观察室中的照明的opriate颜色被获得用于年轻观察者体验由老年人感知的确切颜色。实验原理、方法、结果与实验3相同，在此省略说明。实验3：感知图片中的准确颜色的照明条件。当场景和观察室的照明条件不同时，为了感知场景所经历的准确颜色，获得图片的颜色修改量。在学习阶段，受试者在L光源照明的房间内观看三分钟，然后他/她移动到另一个O光源照明的房间，这与L光源不同。幻灯片一张一张地放映。事先制作了学习室的幻灯片，分别用二十种不同色温的灯照明。受试者的任务是选择一个幻灯片，给他/她的颜色外观的学习室。结果表明，所选载玻片的颜色是在xy色品图中介于L和O之间的照明下拍摄的照片。这个结果意味着，当一个人使用彩色照片来向观察者展示场景的颜色时，摄影师应该准备照片，好像它是在摄影师经历的照明颜色和观察照明颜色之间的照明颜色下拍摄的。少

A photographic picture taken under daylight illumination may be observed in a room illuminated by a tungsten lamp. Does an observer sees the color in the picture that was experienced by the photographer? The concept of the recognized visual space of illumination RVSI predicts that it is not so and the picture must be modified for the intended color perception. We obtained the quantity how much modification is needed in the present research, It is composed of three experiments.Experiment 1 : Shift of recognition axis in RVSI.A simple stimulus of uniform white was employed and its color was judged under illumination of 12 different colors. The color approximately opponent to the color of illumination was observed in the stimulus to imply the shift of the recognition axis in the RVSI toward the illumination color.Experiment 2 : Color perception by aged and the color display for young observers.The color perception changes when people get older due to the yellowing crystalline lenses. Appr … More opriate color of the illumination in the observing room was obtained for young observes to experience the exact color perceived by the aged. The experimental principle, method and results are similar to Experiment 3 and the explanation is omitted here.Experiment 3 : Illumination condition to perceive exact color in pictures.The amount of modification in color for a picture was obtained in order that the exact color experienced for the scene is to be perceived when the illumination condition was different for the scene and for the observing room. A subject saw inside a room illuminated by L light source for three minutes in the learning phase and he/she moved to another room illuminated with O light source, which is different from L. There slides are projected one by one. The slide pictures were made beforehand for the learning room illuminated by lamp of twenty different color temperature respectively. The subject's task was to choose a slide that gave him/her the color appearance of the learning room. The results showed that the color of the slide chosen is a picture taken under the illumination of which color is just between L and O in the xy chromaticity diagram. The result implies that when one uses a color picture to demonstrate the color of a scene to an observer, the photographer should prepare the picture as if it was taken under the illumination of which color is in the midst between the color of illumination that the photographer experienced and the color of illumination for the observation. Less