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Study of the Visibility of Color and Form under Mesopic Vision for the Traffic Safety in the Future of Aging Society

中间视觉下颜色和形状的可见性研究，以促进老龄化社会未来的交通安全

基本信息

批准号：
07680035
负责人：
SATO Masako
金额：
$ 1.47万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
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

项目摘要

The purpose of this study is to predict the effects of color and form on the visibility threshold under mesopic vision for the traffic safety in the future of the aging society. The tested conditions were : 1) the size of object : 2) visual angle of the view object and 3) its luminance contrasted against the background. The measurements were taken in a 0.5 lx booth using five subjects, both male and female, wearing artificial pupils. One after the other, the prepared achromatic circle patterns were presented on the computer CRT by the examiner to the subjects who were looking through the aperture of the reduction screeen. The difference thresholds were determined by the limiting method.The effect of the hue contrast between the graphic objects and its background on the attractiveness were also studied by the analysis of eye movement of the subjects looking at the objects on CRT.The five chromatic colors on the three different color of backgrounds, grass color, track color of sport stadium, and medium gray, were tested as the eye stimuli.The results were :1) Lower difference thresholds or higher visibility were found under the conditions of a larger view angle of the object, (namely large sized objects or a shorter distance from the objects), and a higher contrast of the luminance of the object against the background.2) When the luminance of the background is higher than the luminance of the object, higher visibility should be expected.3) The attractiveness will be lower at the combinations of lower contrast of hue, that is similar color of the object and background.

本研究的目的是预测颜色和形状对中间视觉下可见度阈值的影响，为未来老龄化社会的交通安全提供参考。测试条件为：1）物体的大小; 2）观察物体的视角; 3）物体与背景的亮度对比。测量是在0.5勒克斯的工作间中进行的，使用五名男性和女性受试者，佩戴人造瞳孔。由检查者在计算机CRT上将准备好的消色差圆图案一个接一个地呈现给通过还原屏幕的孔径观看的受试者。采用限幅法确定视觉差异阈值，并通过对CRT上图形对象的眼动分析，研究图形对象与其背景之间的色调对比度对视觉吸引力的影响，以草地色、运动场跑道色和中灰三种不同背景色上的五种彩色作为眼动刺激，结果表明：1）在物体视角较大的条件下，发现较低的差异阈值或较高的可见度，（即，大尺寸的对象或距对象较短的距离），以及对象的亮度相对于背景的较高对比度。2）当背景的亮度高于对象的亮度时，3）在较低的色调对比度下，即物体和背景的颜色相似时，吸引力会降低。