| 基于点云的地铁隧道断面精确拟合与形变分析 |
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| 引用本文： | 李志远,王健,于德亮,孙文潇.基于点云的地铁隧道断面精确拟合与形变分析[J].测绘通报,2020,0(8):157-159. |
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| 作者姓名： | 李志远 王健 于德亮 孙文潇 |
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| 作者单位： | 1. 山东科技大学, 山东 青岛 266590;2. 兖州煤业股份有限公司兴隆庄煤矿, 山东 济宁 272102 |
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| 基金项目： | 山东省重大科技创新工程项目（2019JZZY020103） |
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| 摘 要： | 针对三维激光扫描技术应用于地铁圆形、马蹄形等不同形状的隧道断面难以精确拟合和形变分析问题，提出了一种基于三次B样条曲线的隧道断面拟合分析方法，首先利用三次B样条曲线对断面进行拟合；然后根据拟合曲线提取断面特定点，实现断面形变分析。对某段地铁隧道点云数据进行断面分析表明，该方法可以快速准确地分析隧道断面的形变信息。
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| 关 键 词： | 点云 三次B样条曲线 断面拟合 特征点提取 形变分析 |
| 收稿时间： | 2020-06-15 |
Accurate fitting and deformation analysis of metro tunnel section based on point cloud |
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| LI Zhiyuan,WANG Jian,YU Deliang,SUN Wenxiao.Accurate fitting and deformation analysis of metro tunnel section based on point cloud[J].Bulletin of Surveying and Mapping,2020,0(8):157-159. |
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| Authors: | LI Zhiyuan WANG Jian YU Deliang SUN Wenxiao |
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| Institution: | 1. Shandong University of Science and Technology, Qingdao 266590, China;2. Yanzhou Coal Industry Co., Ltd., Xinglongzhuang Coal Mine, Jining 272102, China |
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| Abstract: | Aiming at the problem that 3D laser scanning technology is difficult to accurately fit and analyze the deformation of tunnel sections with different shapes, such as circular and horseshoe-shaped subways, a method of tunnel section fitting analysis based on cubic b-spline curve is proposed.Firstly, cubic b-spline curve is used to fit the section. Then, the feature points of the cross section are extracted according to the fitted curve to realize the deformation analysis of the cross section. The cross-section analysis of the point cloud data of a subway tunnel shows that this method can analyze deformation information of tunnel section quickly and accurately. |
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| Keywords: | point cloud cubic B-spline curve fitting section fitting feature point extraction deformation analysis |
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