A smokescreen total obscure power(TOP) testing system,based on illumination measurement technology and contrast threshold of human visual is developed.
基于辐照度测量法和以人眼视觉对比度阈值为基准,研制了烟雾全遮蔽能力检测系统。
This paper studies perceived threshold contrast of saturated yellow and non-Color in the darkroom by the perceived threshold contrast experiment.
该文通过在暗室中进行的察觉阈限对比实验,对饱和黄色及无彩色的察觉阈限对比进行了研究。
The goal gratings of five frequencies with different mean luminance were displayed on a CRT display,the contrast detection thresholds under different condition were measured for 9 young observers,and the curve reflecting the relationship between luminance and contrast detection threshold was obtained.
用CRT显示器显示5种频率的目标光栅,通过改变矩形波光栅的平均亮度,测量了9名男性青年在不同平均亮度条件下的对比度觉察阈值,并得出亮度与对比度觉察阈值间的关系曲线,从而探讨人眼在显示器亮度范围内的亮度视觉特性。
