测绘通报 ›› 2017, Vol. 0 ›› Issue (12): 72-76.doi: 10.13474/j.cnki.11-2246.2017.0382

• 学术研究 • 上一篇    下一篇

地下空间激光扫描点云精度对比分析

韩文泉1,2, 胡伍生1, 陈昕2, 王孟和2   

  1. 1. 东南大学交通学院, 江苏 南京 210009;
    2. 南京市测绘勘察研究院有限公司, 江苏 南京 210019
  • 收稿日期:2017-03-20 出版日期:2017-12-25 发布日期:2018-01-05
  • 作者简介:韩文泉(1974-),男,博士,高工,主要从事三维地理信息和激光扫描数据处理工作。E-mail:lidar_hwq@163.com
  • 基金资助:
    国家自然科学基金(41574022);江苏省科技支撑工业计划(BE2014026);江苏省测绘地理信息科研项目(JSCHKY201606)

Analysis on the Precision of Laser Scanning Point Cloud in Underground Space

HAN Wenquan1,2, HU Wusheng1, CHEN Xin2, WANG Menghe2   

  1. 1. School of Transportation, Southeast University, Nanjing 210009, China;
    2. Nanjing Institute of Surveying, Mapping & Geotechnical Investigation Co. Ltd., Nanjing 210019, China
  • Received:2017-03-20 Online:2017-12-25 Published:2018-01-05

摘要: 利用4种激光扫描设备对地下空间扫描,针对获得的点云数据,用全站仪测量研究区内特征点三维坐标,统一点云空间参考;并从点云数据中获取特征点坐标,与测量的三维坐标对比分析。结果显示:推扫式激光扫描设备比架站式精度略低,最弱方向中误差为0.128 m,而架站式为0.039 m;用推扫式激光扫描设备对地下空间进行测量,能满足1∶500数字线划图的测量精度要求。

关键词: 地下空间, 激光扫描, 点云, 精度对比

Abstract: The point cloud data of underground space were acquired with four kinds of laser scanning devices,and three-dimensional coordinates of the feature points in the area were measured with the total station. All data used unified spatial reference. The three-dimensional coordinates of feature points were obtained from the point cloud data separately. The analysis of two measurements showed that the accuracy of position using mobile scanning device was slightly lower than using static one,the mean square error was 0.128 m in the weakest direction,on the contrast the static was 0.039 m.The measurement precision of 1:500 DLG can be obtained by the mobile laser scanning device in the underground space.

Key words: underground space, laser scanning, point cloud, precision comparison

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