基于车载激光扫描点云的铁路隧道横断面提取  被引量:2

Cross-section extraction of railway tunnel from mobile laser scanning point cloud

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作  者:邢庭松[1] 彭金涛[1] 张同刚[2] XING Tingsong;PENG Jintao;ZHANG Tonggang(The 3rd engineering Co.,Ltd.of China Railway Tunnel Group,Shenzhen 518051,China;Southwest Jiaotong University,Chengdu 610031,China)

机构地区:[1]中铁隧道集团三处有限公司,广东深圳518051 [2]西南交通大学,四川成都610031

出  处:《技术与市场》2022年第6期7-10,共4页Technology and Market

摘  要:针对三维激光扫描技术在铁路隧道限界分析和收敛分析等应用中的关键的点云横断面的快速提取问题,提出了适应马蹄形铁路隧道的断面快速提取方法。该方法利用铁路钢轨来确定隧道横断面的方向,并利用RANSAC方法完成隧道断面点云的分类,完成铁路隧道边墙断面的提取。通过实际铁路隧道的车载Lidar点云对提出的方法进行试验。实验结果表明:该方法能够快速完成铁路隧道横断面快速提取,并验证了所提取的断面在隧道限界分析和收敛分析中的实用性。To solve the fast cross-section extration in the application of the mobile Lidar techinology in the clearance analysis and convergence analysis, a fast cross-section extraction method is proposed, which can deal with the horseshoe-shape railway tunnel.The method detemines the direction of tunnel cross-seciton according to the rail, and the point in the cross-section is classified using the RANSAC algorithm, then the cross-section of the side wall of the railway tunnel can be extracted.The proposed method is tested by the real mobile Lidar point cloud of railway tunnel.The experimental results show that the porposed method can quickly extract the railway tunnel cross-section rapidly, and verifies the practicability of the extracted section in tunnel clearance analysis and convergence analysis.

关 键 词:横断面提取 马蹄形隧道 限界分析 收敛分析 车载Lidar点云 铁路 

分 类 号:U452.1[建筑科学—桥梁与隧道工程]

 

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