用阴极射线管显示器研究影响色差知觉的因素

Study of the Parametric Effects in Colour-Difference Evaluation Using CRT Display

利用计算机控制的阴极射线管显示器研究影响色差知觉的因素。由一组观察者采用灰标法判断以 16组不同参数显示的色样对的色差 ,获取了大量的观察数据。初步分析处理的结果表明 ,在本实验研究的各种观察因素中 ,色样轮廓线和背景颜色对色差知觉的影响比较明显 ;在所比较的国际照明委员会 1994年推荐的色差公式(CIE94)、国际照明委员会 1976年推荐的颜色空间和色差公式 (CIELAB)、伯兰福特色差公式 (BFD)和英国颜色测量协会色差公式 (CMC)四种色差公式中 ,BFD预测色差知觉的结果最好 ,CIELAB最差。在分析比较阴极射线管模拟色样和纺织品表面色样的色差评估数据基础上 ,得出了人眼对阴极射线管荧屏色的色差知觉与表面色的色差知觉达到最接近的两种观察条件。

Parametric effects in colour-difference evaluation were investigated using a CRT display controlled by a computer. A large number of visual data were obtained by a set of observers assessing colour-differences of sample pairs presented under 16 groups of parameters with grey-scale method. The results of preliminary processing and analyses indicated that the effects of sample frame and background colour on colour-difference perception were more obvious than other parameters considered in the experiments. The performance of BFD colour-difference formula for predicting colour-difference perception was the best and CIELAB the worst among four colour-difference formulae in comparison. Finally, two observing conditions were obtained for achieving the closest colour-difference perception of fluorescent colour on CRT and of surface colour on textile samples.