| 白天与夜间地面反射特性的对比研究 |
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| 引用本文： | 祝永坚,陈钱,王晓璇.白天与夜间地面反射特性的对比研究[J].兵工学报,2007,28(4):436-439. |
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| 作者姓名： | 祝永坚 陈钱 王晓璇 |
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| 作者单位： | 南京理工大学电子工程与光电技术学院，南京210094 |
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| 摘 要： | 从微光图像的成像过程出发，运用光谱积分建立了微光成像系统的统一模型，分析了日光与夜天光的光谱分布，深入讨论了地面光谱反射特性对成像的影响，对白天与夜间地面反射特性造成的日光图像与微光图像的对比度差异进行了对比研究。实验结果与理论分析达到了很好的一致，对微光图像分析和微光图像仿真有指导意义。
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| 关 键 词： | 光学 微光成像 地面光谱反射特性 日光图像 光谱分布 图像处理 |
| 文章编号： | 1000-1093（2007）04-0436-04 |
| 修稿时间： | 06 6 2005 12:00AM |
Study on Comparison of Ground Reflective Characteristics Between Day and Night |
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| ZHU Yong-jian,CHEN Qian,WANG Xiao-xuan.Study on Comparison of Ground Reflective Characteristics Between Day and Night[J].Acta Armamentarii,2007,28(4):436-439. |
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| Authors: | ZHU Yong-jian CHEN Qian WANG Xiao-xuan |
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| Affiliation: | College of Electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China |
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| Abstract: | According to the procedure of low-light-level(LLL) imaging,a universal model of LLL imaging system was established by using expressions of spectral integrals.The spectrum distributions of sunlight and night sky radiation were analyzed. The effect of ground spectral reflectance on imaging was discussed deeply.And the difference of contrast between daytime image and LLL image caused by ground reflectance was studied.The results of experiments agree greatly with theoretical analysis.It is of momentous guidable significance for LLL image analysis and LLL image simulation. |
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| Keywords: | optics low-light-level imaging ground spectral reflectance daytime image spectrum distribution image processing |
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