摘要
为了解决在已有激光点云基础上自动提取纵、横断面数据的问题,研发了基于ArcGISAddin的激光点云断面数据处理软件,该软件可根据设计线路和桩号,利用ArcObject中IPolyline接口提供的QueryPoint()方法计算出各中桩点,利用QueryNormal()方法计算出各桩号位置的道路法线。将中桩点和法线在不规则三角网中进行高程插值,可得到三维中桩点和三维横断面。在此基础上进行精度统计和格式转换等工作,实现了任意桩号、任意方向的断面数据自动提取及多种道路设计软件断面数据的导出。利用该方法在已分类激光点云基础上进行断面数据采集,一台可运行ArcGIS软件的普通PC机,断面处理速度可达100 km/h。
In road survey and design, in order to solve the problem of automatically extracting longitudinal and transversal section data on the basis of laser point cloud, based on the ArcGIS-Addin development method, the profile data processing software was developed to auto-process the sectional data of arbitrary pile number and arbitrary direction, and convert the profile data to any other formats such as HintCAD and JSL. Through the verification of multiple highway projects, the laser point cloud cross-section data acquisition using this method has the advantages of high automation, high speed and high accuracy of cross-section results.
作者
李升甫
徐选清
杨天宇
杨洪
Li Shengfu;Xu Xuanqing;Yang Tianyu;Yang Hong(Sichuan Highway Planning, Survey, Design And Research Institute Ltd, Chengdu 610041, China)
出处
《铁道勘察》
2019年第5期5-8,共4页
Railway Investigation and Surveying
