机载LiDAR河流高程拟合算法  

River elevation fitting algorithm for airborne LiDAR

作　　者：高照根 高璐[1] 杨晓烨 GAO Zhaogen;GAO Lu;YANG Xiaoye(Shandong Institute of Land Surveying and Mapping,Jinan Shandong 250013,China)

机构地区：[1]山东省国土测绘院,山东济南250013

出　　处：《北京测绘》2023年第6期881-884,共4页Beijing Surveying and Mapping

摘　　要：使用机载激光雷达(LiDAR)进行数字高程模型(DEM)制作过程中,河流数据缺失,需进行人工编辑,目前处理流程中难以既保证数据精度又保证整体平整美观,本文提出机载LiDAR河流高程拟合方案,通过半自动河流边线提取、河流中心线提取以及中心线高程拟合一系列技术流程,不仅解决当前复杂的人工编辑问题,还提升了拟合精度,文中详细地阐述河流高程拟合关键算法,并基于Micro station V8开发出应用实例,为机载LiDAR河流高程拟合提供新思路。During digital elevation model(DEM)production using airborne light detection and ranging(LiDAR),river data is missing and needs to be edited manually.At present,it is difficult to ensure both data accuracy and overall smoothness and beauty in the processing flow.In this paper,an airborne LiDAR river elevation fitting scheme was proposed.Through a series of technical processes such as semi-automatic river sideline extraction,river centerline extraction and centerline elevation fitting,not only the current complex manual editing was solved,but also the fitting accuracy was improved.In this paper,the key algorithm of river flow elevation fitting was described in detail,and an application example was developed based on Microstation V8,providing a new idea for airborne LiDAR river elevation fitting.

关 键 词：机载激光雷达 河流拟合 河流中线 

分 类 号：P208[天文地球—地图制图学与地理信息工程]