利用线性变换和后方交会的月球车相机标定  

Calibration of lunar rover's stereo-camera based on 3DDLT and multi-image resection

作　　者：张烁[1] 燕丹晨[2] 甄莹[3] 徐辛超[3] 

机构地区：[1]武汉大学测绘学院,武汉430079 [2]国家海洋环境预报中心,北京100081 [3]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000

出　　处：《测绘科学》2015年第11期29-33,共5页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41401535);国家测绘地理信息局测绘基础研究基金项目(12-01-05)

摘　　要：针对现有月球车立体相机的标定算法存在的不足,该文提出了一种基于三维直接线性变换(DLT)和多像后方交会对月球车立体相机标定的方法:利用三维DLT算法解算出标定参数的初始值,然后将初值代入多像后方交会算法进行迭代,从而解出相机参数的精确值。最后利用不同类型和焦距值的镜头模拟月球车上安装的三种立体相机开展标定试验,结果表明该方法具有很高的精度和稳定性,能够用于对月球车的立体相机标定。Aiming at the insufficiency of current calibration algorithms for the lunar rover＇s stereo-cameras,the paper proposed a stereo-camera calibration method based on 3DDLT and multi-image resection：the initial values of calibration parameters were calculated by using 3DDLT algorithm,and then plugged into multi-image resection algorithm for iteration,in order to solve the precise values of the camera parameters.Finally,a calibration experiment was implemented by using the lens with different types and different focal lengths to simulate those three types of stereo-cameras,and result showed that the method could be applied in the calibration of the lunar rover＇s stereo-cameras with high precision and stability.

关 键 词：月球车 立体相机 三维DLT 多像后方交会 

分 类 号：P228[天文地球—大地测量学与测量工程]