Cross section extraction of tunnel point cloud based on ransac algorithm

doi:10.13474/j.cnki.11-2246.2021.0287

Abstract

Abstract: Because it is difficult to get the best linear parameters by least square method by fitting all points, including "outliers", this paper presents a method based on RANSAC algorithm to estimate the parameters by random sampling the observed values, the "inner point" of the model is a consistent set until a sufficient consistent set is obtained under a certain number of iterations. The boundary of tunnel point cloud is extracted based on the method of central axis, which provides a reference for the application of 3D laser scanning in production.

Key words: 3D laser scanning, least squares, random sampling consistency, cross-sectional point cloud, feature extraction

CLC Number:

DING Ge, YAN Lishuang, PENG Jian, ZHU Chuanguang, HUANG Xueting. Cross section extraction of tunnel point cloud based on ransac algorithm[J]. Bulletin of Surveying and Mapping, 2021, 0(9): 120-123.

References

[1] ABELLAN A. Terrestrial laser scanning of rock slope insta-bilities[J]. Earth Surface Processes and Landforms, 2014, 39(1):80-97.
[2] YOON J S, SAGONG M, LEE J S, et al. Feature extraction of a concrete tunnel liner from 3D laser scanning data[J]. Ndt&E International, 2009,42(2):97-105.
[3] 徐进军,王海城,罗喻真,等.基于三维激光扫描的滑坡变形监测与数据处理[J].岩土力学,2010,31(7):2188-2191.
[4] 赵小平,闫丽丽,刘文龙.三维激光扫描技术边坡监测研究[J].测绘科学,2010,35(4):25-27.
[5] 李强,邓辉,周毅.三维激光扫描在矿区地面沉降变形监测中的应用[J].中国地质灾害与防治学报,2014,25(1):119-124.
[6] 武汉大学测绘学院测量平差学科组.误差理论与测量平差基础[M].武汉:武汉大学出版社,2003.
[7] 黄声享,尹晖.变形监测数据处理[M].武汉:武汉大学出版社,2013:1-8.
[8] HAN J Y, GUO J, CHIANG Y S. Monitoring tunnel deformations by means of multi-epoch dispersed 3D LIDAR point clouds:an improved approach[J]. Tunnelling and Underground Space Technology, 2013, 38:385-389.
[9] PESCI A, TEZA G, BONALI E, et al. A laser scanning-based method for fast estimation of seismic-induced building deformations[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 2013, 79(330):185-198.
[10] 冒爱泉,朱益虎,郝思宝,等.地面三维激光扫描仪精度测评方法和误差改正模型研究[J].测绘通报,2014(2):72-75.
[11] GIAMMANCOIM, MAIDEN B R, RSTES H E, et al. Using 3D laser scanning technology to create digital models of hailstones[J]. Bulletin of the American Meteorological Society, 2017, 98(7):1341-1347.
[12] 韦武化. 三维激光扫描技术运用于隧道断面变形测量[J]. 北京测绘, 2020, 34(4):561-565.
[13] 吕磊,邢汉发.基于地面LIDAR技术的异性建筑竣工测量方法研究[J].测绘工程,2014,23(1):73-77.
[14] 张慧,李凯. 三维激光扫描技术在公路隧道施工监测中的应用研究[J]. 公路工程,2018,43(4):230-234.
[15] 刘丁酉.矩阵分析[M].武汉:武汉大学出版社,2003.
[16] PEJIC M, OGRIZOVIĆ V, BOŽIĆ B, et al. A simplified procedure of metrological testing of the terrestrial laser scanners[J]. Measurement, 2014(53):260-269.
[17] 杨荣华.地面三维激光扫描点云质量评价模型研究[D].武汉:武汉大学,2011.
[18] 谢雄耀,卢晓智,田海洋,等.基于地面三维激光扫描技术的隧道全断面变形测量方法[J].岩土力学与工程学报,2013,32(11):2214-2223.
[19] 浮丹丹,周绍光,徐洋,等.基于主成分分析的点云平面拟合技术研究[J].测绘工程,2014,23(4):20-23.
[20] 周世明.基于三维激光扫描的既有铁路中线勘测方法研究[J].铁道勘察,2021,47(1):9-14.