中文摘要：

人眼视觉系统特性是图像显示、处理、理解等技术的重要依据,通过实验测试和理论分析研究人眼的视觉特性,使人眼视觉特性模型化,对促进光电成像技术的发展和应用具有重要的作用。结合前人拟合人眼对比度敏感函数和理论提取其数学模型的经验,对用CRT显示器显示目标光栅,在暗室环境下测量三种平均亮度的人眼对比度敏感数据采用线性调制作用下的指数形式的方法进行了拟合,并从理论上得出了一种新的CSF数学模型。通过与国外拟合结果的对比,表明此模型是一种更好的人眼对比对敏感视觉特性模型。

英文摘要：

The characteristics of human vision system （HVS） are the basis for image technology of displaying, processing and understanding. Studying the visual characteristics through experimental test and theoretical analysis to cause the visual characteristics simulation promotes the development and application of photoelectricity imagery technology. In this measurement, goal gratings are displayed on CRT monitor. Contrast sensitivity to luminance gratings with three kinds of average brighmess under the dark environment is measured. According to the experience of former fitting CSFs and distilling mathematical model theoretically, CSFs of three kinds of average brightness are fitted and a new CSF mathematical model are put forward with the exponential form of the linear modulation function. Comparing the results with ones fitted by Nadenau, it shows that this model of human vision sensitivity characteristics is better.