A New Experimental Method to study the Color Vision

研究色觉的新实验方法

• 批准号: 07551001
• 负责人: KAWABATA Yasuhiro
• 金额: $ 2.37万
• 依托单位: Ritsumeikan University (1996)Hokkaido University (1995)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07551001/
• 关键词: Optical System; Graphic Display; Color Vision; Chromatic System; CSF; Spatial Acuity; Adaptation Level; 順応レベル; グラフィックCRT; 正弦波; 自動測色システム; ビデオボード; フレームバッファ; 液晶リターダー; 色のCSF

A new method to study the color vision is presented. The critical areas for spatial integration at threshold were obtained for lights of various wavelengths, presented against the achromatic or four chromatic background fields of the same retinal illuminance. The test and background fields were provided by a graphic display and a two-channel Maxwellian-view optical system. All apparatus were controlled by a microcomputer. The subjects' responses were obtained using the four buttons connected to the microcomputer. The critical area was defined by a procedure which fitted three lines to the data. The transition from the area of complete to partial spatial integration is defined by the critical area (xc) at which two straight lines with slopes of 0 and 0.5 intersect in a logI・A vs logA plot (where I=threshold intensity, A=test area), and the transition from the areas of partial spatial integration to complete absence of spatial integration is defined by the critical area (xp) at which two straight lines with slopes of 0.5 and 1 intersect respectively. Now, total integration (A) can be defined by thefollowing equation ; A_i=xc+xp-xc. On the 3 log Td white background, A_i was short for the lights of middle wavelengths, longer for the lights at the ends of the spectrum. However, there were some inter-subject differences. A_i also depended on the background wavelength. Generally, A_i obtained for the chromatic background was reduced with test lights of similar color, but is expanded with test lights of color opponent to the background, as compared with A_i obtained for the achromatic background of the same retinal illuminance. It was suggested that the integration area at threshold closely depended on the level of chromatic adaptation, as well as luminance adaptation.

提出了一种研究色觉的新方法。在阈值处的空间积分的临界面积，获得了各种波长的光，对相同的视网膜照度的无色或四色背景场。测试场和背景场由图形显示器和双通道麦克斯韦光学系统提供。所有仪器均由微机控制。受试者的反应是使用连接到微型计算机的四个按钮获得的。通过将三条线拟合到数据的程序来定义临界面积。在logI·A vs logA图中，从完全空间积分区域到部分空间积分区域的过渡由斜率为0和0.5的两条直线相交的临界区域（xc）定义（其中I=阈值强度，A=测试区域），而从部分空间整合到完全缺乏空间整合的区域的过渡由关键区域（xp）定义两条斜率分别为0.5和1的直线相交的点。现在，全积分（A）可以由下面的方程定义：A_i=xc+xp-xc。在3 log Td的白色背景下，对于中波长的光，A_i较短，对于光谱末端的光，A_i较长。然而，存在一些受试者间差异。A_i也依赖于背景波长。与相同视网膜照度的非彩色背景相比，彩色背景的A_i随测试光的颜色相近而减小，随测试光的颜色相反而增大。结果表明，阈值积分面积不仅与亮度适应有关，而且与色适应水平密切相关。

项目成果

川端康弘: "視覚情報処理ハンドブック(分担執筆)" 朝倉書店(印刷中),

川端泰弘：《视觉信息处理手册（合着）》朝仓书店（出版中）、

Yasuhiro Kawabata: "Spatial integration of chromatic mechanisms In human vision." The Ritsumeikan bungaku. (in press).

Yasuhiro Kawabata：“人类视觉中色彩机制的空间整合。”