年轻观察者和老年观察者对显示色的辨色差异研究

Study on the Difference of Color Discrimination on Display Colors Between Young and Old Observers

为了研究年轻观察者和老年观察者对不同显示设备显示颜色的分辨差异,基于CIE推荐的5个颜色中心(灰、红、黄、绿、蓝),在两台具有不同原色光谱带宽的显示设备(IPAD和QUATO)上进行颜色再现。本研究组织了47名色觉正常的观察者(20～27岁的年轻观察者30人,61～74岁老年观察者17人)基于双目同时配色法开展颜色匹配实验。测量目标色和匹配色的光谱数据,并基于CIE1964颜色匹配函数进行CIELAB色差的计算,结果发现年轻观察者和老年观察者间的辨色色差值差别不大。为了更好地表征观察者的辨色差异,用a*10b*10值的协方差逆矩阵参数构建了观察者辨色差异色度椭圆。结果表明,老年观察者在显示器上辨色差异大于年轻观察者,且老年观察者对5个颜色中心的辨色差异宽容量较大。

In order to study the difference of color discrimination between young and old observers,two display devices(IPAD and QUATO)with different bandwidth were selected with the five color centers recommended by CIE including gray,red,yellow,green and blue.Forty-seven observers including 30 young observers aged from 20 to 27 years and 14 old observers aged from 61 to 74 years with normal color vision were selected to conduct cross-media color matching experiments using the method of simultaneous color matching.The spectral data of target colors and matching colors were collected and substituted into CIE1964 color matching function to calculate CIELAB color difference.It found that there was little color discrimination in color difference between young and old observers.In order to characterize the difference of color discrimination of the observers better,the parameter of the covariance inverse matrix of a*10 b*10 was used to construct the difference of color discrimination colorimetric ellipses of the observers.The results showed that the difference in color discrimination among old observers is greater than that among the young observers,and the old observers have a greater color difference discrimination tolerance on the five color centers.