A coarse-to-fine method for slope deformation detection

doi:10.13474/j.cnki.11-2246.2021.0183

Abstract

Abstract: Many slopes will be formed during modern engineering construction, and once these slopes are accidentally damaged, they will pose a great threat to public live and property. Therefore, continuous deformation detection of theslope is very important. TLS is a modern slope detection method. Based on TLS, this paper proposes a coarse-to-fine method for slope deformation detection. For the two-stage slope point clouds after good registration, the distance between the nearest matching points of the two-stage point clouds is calculated, and then rough detection is carried out. During the precise detection, the general direction of deformation is estimated firstly, and then the point withthe largest FPFH is searched as the corresponding point according to the direction vector. Finally, the distance from the point to the plane where the corresponding point is located is calculated as the deformation. Experiments show that the proposed method can effectively calculate the actual deformation of the slope, and it is practical.

Key words: slope, TLS point cloud, deformation detection, FPFH, coarse-to-fine

CLC Number:

P237

RONG Yanxiang, GONG Zheng, CHEN Zequan, YANG Bisheng. A coarse-to-fine method for slope deformation detection[J]. Bulletin of Surveying and Mapping, 2021, 0(6): 93-97.

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