彩色显示器亮度和对比度的最优化设置

实验研究了彩色显示器亮度和对比度设置对显示器颜色特性的影响.将Neso彩色显示器的亮度和对比度分别设置为最大值的20、50、80和100 %共16种组合,详细地测试和比较了每种设置下显示器的黑点亮度、白点亮度、阶调再现曲线(TRC)、通道可加性、色域和色品恒定性等颜色特性,实验结果表明,亮度设置对黑点亮度影响明显,对比度设置主要影响的白点亮度,黑点对通道可加性、色域和色品恒定性影响很大.通过亮度、对比度设置使黑点亮度尽可能小,白场亮度达到使用要求,同时TRC不出现"横剪切"和"纵剪切"现象,则显示器达到了最优化设置.

Optimal Brightness and Contrast Settings for Color Displays

The relationships were derived between the brightness and contrast settings and the corresponding color characteristics of CRT displays.By setting the brightness and contrast of a Neso color display to 20%,50%,80% and 100% respectively(totally 16 groups),the black point luminance,white point luminance,tune reproductive curve(TRC),channel additivity,color gamut and the constant channel chromaticity under each setting were measured and compared in detail.The experimental results showed that the black point was mainly affected by brightness settings and the white point by contrast settings.The black point played important roles in channel additivity,color gamut and the constant channel chromaticity.When the black point luminance was as small as possible,the white point luminance met the requirement of the application while the TRC did not cross the discrete integer value axis or luminance axis,the display achieved the best settings with respect to brightness and contrast.