人类视觉对比度分辨率的非线性补偿

A nonlinear compensatory method of human vision contrast resolution

将在暗视觉条件下获得的人类视觉不能分辨的不同灰度的信息,放在恰可分辨的灰度水平上,对暗视觉条件下人类视觉的低对比度分辨率进行非线性补偿。经过对暗视觉条件下人类视觉的低对比度分辨率进行非线性补偿后,原来人类视觉不能分辨的不同灰度的信息就清楚可辨。结果提示暗视觉条件下人类视觉的对比度分辨率的非线性补偿方法,可显著改善暗视觉条件下人类视觉的对比度分辨率。该方法可用于提高微光夜视系统和反隐形系统的功能。

The different gray information, which is acquired under the scotopic condition and cannot be resolved by human vision, is placed at such a gray level as the just noticeable difference, compensates nontinearly the contrast resolution of the human vision under the scotopic condition. Through the nonlinear compensation for lower contrast resolution of the human vision under the scotopic condition, the variant gray information, which cannot be resolved originally by the human vision, is resolvable clearly. Results show that the method which compensates nonlinearly the lower contrast resolution of the human vision under the scotopic condition can obviously improve the contrast resolution of the human vision under the scotopic condition. It can be used to improve the performances of the low light level night vision and the anti-stealth systems.