大视场主动光学成像系统的成像研究  

Imaging of active optical imaging system with a wide field of view

作　　者：吴亚平[1] 张天序[1] 桑农[1] 汪国有 曹治国 

机构地区：[1]华中理工大学图像识别与人工智能研究所图像信息处理与智能控制教育部重点实验室,湖北武汉430074

出　　处：《光学精密工程》2000年第2期106-109,共4页Optics and Precision Engineering

基　　金：国家自然科学基金

摘　　要：从主动光学成像系统的照明模型出发 ,研究了大视场情况下目标和景物的成像性质 ,分析了传输介质对照明和成像光束的衰减作用 ,得出了光学成像系统像面照度的计算公式 ,并对其衬比传递特性和视场大小对成像的影响进行了详细的分析 ,得出了小视场近似的条件 ,其结果可用于主动光学成像系统的设计。Based on the irradiation model and imaging principles of an active optical imaging system, the imaging properties of active optical imaging systems with wide field of view are studied by taking account of the effects of both atmospheric attenuation and scattering. By theoretically studying, the formulas for calculating the irradiance on the imaging plane and the contrast of the image are obtained. The effects of atmospheric attenuation and scattering are analyzed. The transfer properties of the contrast and the effects of the size of the field of view on imaging are studied in detail. The validity of narrow field of view approximation is also analyzed. These results are useful to the design of active optical image systems, image analysis and object recognition.

关 键 词：点光源 主动光学成像系统 衰减 成像 大视场 

分 类 号：O435[机械工程—光学工程] TH74[理学—光学]