External Parameter Calibration Method of Vehicle Laser Scanning System Based on Planar Features

doi:10.11947/j.AGCS.2018.20170495

Abstract

Abstract: The calibration of the external parameters of the laser scanner is the precondition and guarantee for obtain high-precision 3D geographic data. Most of the traditional calibration methods require setting up a special calibration field, manual collection of checkpoints, or the amount of calculation in the process of solving is large. Based on this, an automatic calibration method is proposed in this paper, by collecting point cloud data in the same area with different vehicle directions, extracting planar features data and automating registration of these planar features data, through the co-calibration of planar features of different angles.The proposed method realizes the coincidence of point clouds collected by different vehicles in three-dimensional space and finally completes the calibration of the system external parameters. The results show that the method is automatic for the calibration of the external parameters of the vehicle laser scanning system, reduces the need for manual participation, and achieves high precision.

Key words: vehicle laser scanning system, plane feature, point cloud registration, calibration of external parameters, automation

CLC Number:

P234

ZHANG Haixiao, ZHONG Ruofei, SUN Haili. External Parameter Calibration Method of Vehicle Laser Scanning System Based on Planar Features[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(12): 1640-1649.

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