一种ADS40影像物方反投影坐标计算的快速算法  

Object-Space Back Project Coordinates Calculation Algorithm for ADS40 Imageries

作　　者：王密[1] 胡芬[1] 金淑英[1] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2009年第2期187-190,共4页Geomatics and Information Science of Wuhan University

基　　金：国家973计划资助项目(2006CB701300);国家"十一五"科技支撑计划资助项目(2006BAB10B01-B);武汉市青年科技晨光计划资助项目(200750731253)

摘　　要：针对ADS40影像的物方空间投影几何约束,提出了一种基于扫描线投影中心平面几何约束的ADS40物方反投影坐标计算快速算法,有效地改进了最佳扫描线的搜索效率。实验表明,该算法可以有效地提高ADS40影像物方反投影坐标计算的效率。As a new type of aerial digital camera, the airborne three-line array sensor ADS40 now has been more and more popular in the acquisition of high-quality aerial imageries. The object-space back project calculation referring to image point coordinates calculation of the ground points plays a fundamental part in the processing of photogrammetry data. However, the best scanline search is the foremost issue for the object-space back project coordinates calculation algorithm of ADS40 imageries and has becomes the efficiency bottleneck of the current algorithms. We presented a novel object-space back project algorithm for ADS40 images based on central perspective plane of scanline. Experiments proved the feasibility and efficiency of the algorithm, which has currently been applied in the processing module of ADS40 imageries.

关 键 词：ADS40 反投影坐标计算 扫描线投影中心平面 

分 类 号：P237.4[天文地球—摄影测量与遥感] P231.5[天文地球—测绘科学与技术]