| 亮度增益对基于像增强器的目标背景对比度影响 |
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| 引用本文： | 苏悦,拜晓锋,党小刚,冯丹青,程宏昌,李周奎,韩坤.亮度增益对基于像增强器的目标背景对比度影响[J].红外技术,2022,44(4):383-388. |
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| 作者姓名： | 苏悦 拜晓锋 党小刚 冯丹青 程宏昌 李周奎 韩坤 |
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| 作者单位： | 1.昆明物理研究所, 云南 昆明, 650223 |
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| 摘 要： | 亮度增益为微光像增强器的重要参数,影响微光夜视环境下以微光像增强器为核心的目标背景对比度测试结果精度.本文基于对比度测试原理,通过对不同亮度增益的ICCD进行目标背景对比度测试,分析得到亮度增益与目标背景对比度的变化关系及影响因素.测试结果表明:亮度增益分别为12000 cd/(m2·lx)、8300 cd/(m2·l...
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| 关 键 词： | 像增强器 ICCD 目标背景对比度 亮度增益 |
| 收稿时间： | 2021-12-21 |
Influence of Brightness Gain on the Object-Background Contrast of an Image Intensifier |
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| SU Yue,BAI Xiaofeng,DANG Xiaogang,FENG Danqing,CHENG Hongchang,LI Zhoukui,HAN Kun.Influence of Brightness Gain on the Object-Background Contrast of an Image Intensifier[J].Infrared Technology,2022,44(4):383-388. |
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| Authors: | SU Yue BAI Xiaofeng DANG Xiaogang FENG Danqing CHENG Hongchang LI Zhoukui HAN Kun |
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| Affiliation: | 1.Kunming Institute of Physics, Kunming 650223, China2.Science and Technology on Low-Light-Level Night Vision Laboratory, Xi'an 710065, China |
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| Abstract: | Brightness gain is an important parameter of low-light image intensifiers. It affects the accuracy of the object-background contrast in low-light night vision environments. Based on the principle of contrast tests, this study analyzes the relationship between the brightness gain and the object-background contrast, as well as influencing factors, via the object-background contrast test on an ICCD with different brightness gains. The results show that when the brightness gain is 12000, 8300, or 6000 cd/(m2·lx) and the ambient illuminance is within the range of 2×10－3, 8×10－3] (lx), the object-background contrast is minimally affected by the brightness gain. However, when the illuminance is outside this range, the object-background contrast test result may be distorted due to the influence of the brightness gain. The results of this study can guide the improvement of accuracy of ICCD object-background contrast tests. |
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