二次成像航摄相机数字后背的设计与定标  

Design and Calibration for Digital Backing System of Twice-imaging Aviation Camera

作　　者：沈添天[1] 赵康年[1,2] 赵世湖[1] 段晓辉[3] 晏磊[1] 

机构地区：[1]北京大学空间信息集成与3S工程应用北京市重点实验室,北京100871 [2]青海大学地质工程系,青海西宁810016 [3]北京大学信息科学技术学院,北京100871

出　　处：《全球定位系统》2009年第3期33-37,共5页Gnss World of China

摘　　要：数字航摄相机的成功应用已成为摄影测量与遥感科学发展的新里程碑。目前,数字航摄相机普遍采用多相机拼接成像等技术,为数字遥感图像的几何定标与定位处理方法提出了新的问题和要求。二次成像航摄相机是一种能够集成胶片和数字优点为一体的新型航摄相机,其数字后背由多个带镜头的大面阵CCD成像系统组成,本文设计完成了大面阵CCD图像数据的实时获取与存储系统,并利用得到的定标靶面图像,对数字后背成像系统进行了几何定标,得到了CCD相机的内、外方位参数,为实现数字航摄相机系统的高精度定位与三维摄影测量奠定了基础。Application of digital aviation camera was a milestone in the development of photogrammetry and remote sensing. At present, digital aviation cameras generally utilize the technology of multicamera splicing. This technology introduces new problems in geometry calibration and positioning. In order to solve this problem, a new twice-imaging aviation camera is proposed, which combines the advantages of both film and digital camera. In this paper, real-time data acquisition and management are realized for its backing CCD imaging system. Based on the digital image obtained, calibration for the backing system is completed as a preparation for the whole camera high-accuracy positioning and photogrammetry.

关 键 词：几何定标 摄影测量 数字图像 航空遥感 

分 类 号：TN948.41[电子电信—信号与信息处理] TP277[电子电信—信息与通信工程]