A smokescreen total obscure power(TOP) testing system,based on illumination measurement technology and contrast threshold of human visual is developed.

基于輻照度測(cè)量法和以人眼視覺對(duì)比度閾值為基準(zhǔn),研制了煙霧全遮蔽能力檢測(cè)系統(tǒng)。

This paper studies perceived threshold contrast of saturated yellow and non-Color in the darkroom by the perceived threshold contrast experiment.

該文通過在暗室中進(jìn)行的察覺閾限對(duì)比實(shí)驗(yàn),對(duì)飽和黃色及無(wú)彩色的察覺閾限對(duì)比進(jìn)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顯示器顯示5種頻率的目標(biāo)光柵,通過改變矩形波光柵的平均亮度,測(cè)量了9名男性青年在不同平均亮度條件下的對(duì)比度覺察閾值,并得出亮度與對(duì)比度覺察閾值間的關(guān)系曲線,從而探討人眼在顯示器亮度范圍內(nèi)的亮度視覺特性。