基于密度栅格与等高面的LiDAR-DEM水面处理研究  

Research on LiDAR-DEM Water Surface Processing Based on Density Grids and Contour Planes

作　　者：陈晓燕 CHEN Xiaoyan(Fujian Surveying and Mapping Institute,Fuzhou 350001,China)

机构地区：[1]福建省测绘院,福建福州350001

出　　处：《测绘与空间地理信息》2024年第11期142-144,共3页Geomatics & Spatial Information Technology

摘　　要：机载LiDAR构建DEM数据处理静止水面时需要满足高程固定和边缘过渡自然的生产要求和质检要求。传统的作业方法通常需要大量的人工编辑,效率相对较低。为了解决这一问题,本文提出了一种结合点云密度栅格和DEM等值面的方法,实现了对静止水面边界和水面高程的自动提取,从而解决了DEM在静止水面中的自动平整问题,并利用ArcGIS Pro开发了相应的自动处理工具。将该方法在福建省2 m格网DEM数据制作项目中进行测试,结果表明该方法不仅满足了质检要求,而且相较于传统人工编辑方式,具有更高的效率。Production and quality inspection requirements of still water bodies in airborne LiDAR-derived DEM data requires fixed elevation and natural edge transitions.Traditional methods often involve extensive manual editing,leading to relatively low efficiency.This paper proposes an approach that combines point cloud density grids and DEM contour planes to automatically extract the boundaries and elevations of still water surfaces,addressing the automatic leveling of still water bodies in DEM.An automated processing tool was developed using ArcGIS Pro.The method was verified in a 2-meter grid DEM data production project in Fujian province.The results show that the proposed method meets the quality inspection requirements and significantly improves efficiency compared to manual editing methods.

关 键 词：LIDAR DEM 水面 边界 断裂线 

分 类 号：P208[天文地球—地图制图学与地理信息工程]