不同屏面背景亮度下正确辨认荧光屏(CRT)颜色字符亮度对比度阈的实验研究  

EFFECTS OF BACKGROUND LUMINANCE ON THE LUMINANCE CONTRAST THRESHOLD OF THE CRT DISPLAY WITH DIFFERENT COLOURED CHARACTERS

作　　者：许为[1] 刘为民[1] 

机构地区：[1]杭州大学心理学系

出　　处：《心理科学》1992年第2期26-31,共6页Journal of Psychological Science

摘　　要：本研究的目的是了解屏面背景亮度与正确辩认CRT 红、绿、蓝三种颜色字符所需亮度对比度阈间的变化关系。结果表明:(1)CRT 颜色字符的视觉辩认绩效与屏面背景亮度和字符亮度对比度有关。随背景亮度的提高,正确辩认CRT 红、绿、蓝三种颜色字符的亮度对比度阈均随之下降,且在一定的作业绩效水平上,背景亮度与字符亮度对比度阈间存在“代偿关系”以及“代偿比例转换”的关系;(2)在同等背景亮度下,正确辩认CRT 红、绿、蓝三种颜色字符的亮度对比度阈间存在一定差异,其中,红色字符的亮度对比度阈明显低于蓝色字符。This experiment was carried out toexplore the relation between backgroundluminance contrast threshold of the CRTdisplay with different coloured characters.Colors of the CRT characters selected in theexperiment were red, green, and blue. Theconclusions were as follows:1)the perform-ance of visual identification of the colouredcharacters on the CRT display were correlatedwith background luminance and luminancecontrast threshold toidenti fy correctly thecoloured characters on the CRT display de-clined as background luminance increased; 2)there was significant difference between theperformance of the identification of red char-acters and that of blue ones. The contrastthreshold required to identify red charactesron CRT display was lower than that to iden-tify the blue ones.

关 键 词：荧光屏 颜色 字符 亮度 对比度阈 

分 类 号：B845.63[哲学宗教—心理学]