车载激光扫描在公路改扩建路面信息提取中的应用  

Application of vehicle laser scanning in road information extraction of road reconstruction and expansion

作　　者：张邵华 ZHANG Shaohua(The First Survey and Design Institute Group Co.,Ltd.of China Railway Corporation,Xi′an,Shaanxi,710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043

出　　处：《测绘技术装备》2022年第2期87-91,共5页Geomatics Technology and Equipment

基　　金：中铁第一勘察设计院集团有限公司科研项目(院科20-60),中国铁建股份有限公司科技重大专项课题(2019-A02)。

摘　　要：城镇化快速发展对公路交通荷载提出了更高要求,对公路定期养护,提高寿命以及改扩建提高运输量具有重要意义。车载三维激光扫描技术能够高效获得道路的三维场景,提供高精度数据参考。基于点云与影像配准技术,以共线方程为基础的道路坑槽检测技术,能够体现路坑边界、体积等信息。本文以点云为基础,对路面点云进行分割、栅格化、强度校正处理,并提出一种自适应阈值分割法,以完成道路标线的提取与识别。经实际工程验证,该方法能够满足公路养护,改、扩建的基本需求。The rapid development of urbanization puts forward higher requirements for highway traffic load,which is of great significance for highway regular maintenance to improve service life and reconstruction and expansion to increase transportation.Vehicle 3D laser scanning technology can efficiently obtain the road 3D scene and provide high precision data reference.Based on point cloud and image registration technology and collinear equation,a road pothole inspection technology is proposed,which can provide information such as pothole boundary and volume.Taking point cloud as the source,the road point cloud is segmented,rasterized and intensity corrected,and an adaptive threshold segmentation method is proposed to complete extraction and recognition of road markings.Through the actual project,the design scheme can meet the basic needs of highway maintenance,reconstruction and expansion.

关 键 词：移动激光扫描 点云与影像 坑槽检测 共线方程 标线提取 自适应阈值分割 

分 类 号：P232[天文地球—摄影测量与遥感]