Abstract
ABSTRACT In this paper, a point cloud extraction method based on the template grid was proposed for deformation analysis. Firstly, coordinate alignment was carried out by a coarse-to-fine strategy to ensure that the point clouds are in a unified coordinate system. Then, the points in the grid are subsequently converted into a universal grid system and the center according to the grid border is carried out to serve as the feature points for deflection detection. The deformation was determined by analyzing the deviation under different working conditions, and the maximum deformation under different earthquake magnitudes was verified in the experiment.
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