关键词: 地面 LiDAR, 实景三维模型, 精细化建模, 精度分析, 智慧矿山

Abstract: With the continuous advancement of the construction of " real 3D China" and smart mines,higher requirements are put forward for the refinement of 3D models that carry the basic data of digital construction. Based on the 3D reconstruction technique of ground LiDAR,a refined 3D reconstruction method for buildings is proposed. The 3D laser scanner was used to obtain the scanning data of the building. After point cloud denoising,point cloud coloring,multi-point cloud stitching and coordinate transformation,a 3D model based on the 3D laser point cloud was constructed,and the modeling quality was evaluated from the position accuracy and texture structure information. The results show that the position accuracy of the 3D model based on ground LiDAR is high,the median error of X direction is ±0. 92 cm,the median error of Y direction is ±0. 60 cm,the median error of plane is ±1. 10 cm,and the median error of elevation is 0. 77 cm. In terms of structural texture accuracy,it can accurately express the information of the lower part of building and the interior,and the texture is fine.

Key words: ground LiDAR,real scene 3D model,fine modeling,precision analysis,smart mine