Study on Data Acquisition and Registration Experiment of Terretrial Laser Scanning Point Clouds under Complicated Banded Terrain Condition

doi:10.13474/j.cnki.11-2246.2018.0140

Abstract

Abstract:

The spatial coordinate system registration processing for terrestrial scanning point cloud data obtained from the multi-site erections is the data preprocessing key technology to achieve the surface 3D model. In this paper, the registration accuracy of the 3D scanning point cloud data was studied. Based on the different modes of the data acquisition in scanning settings, the independent site acquisition and matching mode based on certain scanning overlap, the acquisition and matching mode based on the site GPS coordinates control and the backsight acquisition and matching mode based on the total station measured coordinates of the site were disigned. Three kinds of test programs, carried out for different scanning programs under the point cloud data obtained by the registration processing method analysis and precision comparison analysis. Then analysis and precision analysis of the registration methods for point cloud data obtained under different scanning schemes were carried out. The results of different schemes applied to point cloud data acquisition and registration with ribbon test area showed that, compared with the independent site acquisition and matching mode, the latter two acquisition modes, namely, the acquisition and matching mode based on the site GPS coordinates control and the backsight acquisition and matching mode based on the total station measured coordinates of the site, which showed a clear advantage due to overcome the difficulties with the global coordinate system conversion and the target dependence and so on, so they had higher data acquisition and matching efficiency.The research results can provide reference for the out field data acquisition about same type of equipments on the ground 3D laser scanning system and point cloud registration.

Key words: terrestrial laser scanning, point clouds, data acquisition mode, point cloud registration, registration accuracy

CLC Number:

P232

YANG Min, GAN Shu, YUAN Xiping, GAO Sha, ZHU Zan, YU Hui. Study on Data Acquisition and Registration Experiment of Terretrial Laser Scanning Point Clouds under Complicated Banded Terrain Condition[J]. 测绘通报, 2018, 0(5): 35-40.

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