使用自行开发出的基于Web的gamma估计程序，分别通过Internet对CRT和LCD显示器在暗、微暗和办公环境三种观察环境下，进行了视觉估计显示器gamma精确度研究实验.实验得出：不同实验者估计偏差范围，对CRT和LCD显示器分别是0.13和0.20；估计与测量结果的平均误差范围，对CRT和LCD显示器分别是0.07和0.17；gamma估计基本与观察环境无关；观察视角对LCD显示器gamma值影响很大；显示器的“亮度”和“对比度”设置，不影响视觉估计结果.

Using the self-developed web-based gamma estimation software, experiments of visual estimating gamma are carried out on CRTs and LCDs through internet in three different view environments of dark, dim and office conditioning. The experimental results show that: 1) Estimation deviation of different subjects is less than 0.13 on CRTs, and less than 0.20 on LCDs respectively; 2) Compared with measured results, average error of estimated gamma is less than 0.07 on CRTs, and less than 0.17 on LCDs respectively; 3) Viewing environments do not effect results of visual estimating gamma; 4) Viewing angle has great influence on estimated gamma of LCDs; 5) The “luminance” and “contrast” setting of display does not effect result of visual estimating gamma.