VLL影像匹配的线路地形断面测绘方法  

Route section survey method based on VLL image matching

作　　者：董莉[1] 李浩[1] 佟光成 

机构地区：[1]河海大学,南京210098 [2]徐州市政设计院有限公司,江苏徐州221000

出　　处：《测绘科学》2013年第4期101-103,共3页Science of Surveying and Mapping

基　　金：国家自然科学基金资助项目(51079053);"十一五"国家科技支撑计划项目(2008BAB29B01)

摘　　要：针对使用现有全数字摄影测量手段从航空影像中提取线路地形断面,存在高程精度低、劳动强度高以及自动化程度低等缺点,本文在已有数字高程模型(DEM)等数据基础上,采用铅垂线轨迹法(VLL)结合最小二乘匹配以及概率松弛法进行线路地形断面测绘。实验证明,采用本文方法得到的断面精度要优于全数字摄影测量手段所得到的断面,能够满足实际工程的需求。The existing digital photogrammetric methods of route section extraction from aerial images have some shortcomings, such as, low height accuracy, high labor intensity and low degree of automation. This paper used a method combining Vertical Line Lo- cus （VLL） with least square matching and probability relaxation algorithm to conduct the route section survey based on exiting DEM da- ta. The experimental results indicated that the accuracy of this method is superior to that of the digital photogrammetric methods, which could meet the needs of practical engineering.

关 键 词：影像匹配 线路断面 航空影像 DEM 

分 类 号：TM75[电气工程—电力系统及自动化]