Analysis of point cloud data of tunnel cross-section using cubic B-spline curve
| Autor: | Jian Wang, Zhiyuan Li, Digui Li, Fengqi Zhu, Wanqi Gu |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 643:012064 |
| ISSN: | 1755-1315 1755-1307 |
| DOI: | 10.1088/1755-1315/643/1/012064 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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