Open AccessAnalysis of point cloud data of tunnel cross-section using cubic B-spline curve
Author(s) -
Zhiyuan Li,
Jian Wang,
Fengqi Zhu,
LI Di-gui,
Wanqi Gu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/643/1/012064
Subject(s) - point cloud , cross section (physics) , section (typography) , deformation (meteorology) , point (geometry) , spline (mechanical) , geometry , laser scanning , curve fitting , computer science , structural engineering , geology , mathematics , engineering , laser , physics , optics , statistics , artificial intelligence , oceanography , quantum mechanics , operating system
In order to overcome the problem of extraction and deformation information analysis of tunnel cross-section by 3D laser scanning technology in tunnel engineering application, a method of extraction and fitting of tunnel cross-section based on cubic B-spline curve was proposed. First, obtain the initial cross-sectional point cloud by using the cross-sectional intercept method based on the spatial point cloud subset;Then, the cross-section was fitted with a cubic B-spline curve, and the missing part of the point cloud was repaired automatically.In the end, specific points are extracted from the fitted cross-section point cloud to realize cross-section deformation analysis.And cross-section analysis of point cloud data of a section of subway tunnel shows that this method can quickly and accurately analyze the deformation information of the tunnel cross-section.