Calibration of a LargeScale 3D Laser Measurement System

Abstract

Abstract: The calibration method of 3D laser scanning measurement system based on the projective geometry transformation was researched. Based on the characteristic of scanning plane and calibration target, the relationship between different coordinates of the scanning points was deduced by projective geometry theory. According to the thought of closed kinematic chain, the constraint equations were established. Hence the calibration problem can be converted into the solution of the intrinsic matrix and the extrinsic matrix of the system parameters in the global coordinate.
The calibration was achieved through the above two matrices by spatial transformation. Finally, the validation was verified through the experiments. The research result lays a good foundation of the further work.

Key words: 3-D laser measurement system, active calibration, projective geometry, closed kinematic chain, intrinsic and extrinsic matrices

CLC Number:

TP 391

GUO Yang-a, DU Zheng-Chun-a, b , YAO Zhen-Qiang-a, b . Calibration of a LargeScale 3D Laser Measurement System[J]. Journal of Shanghai Jiaotong University, 2012, 46(02): 223-227.

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Calibration of a LargeScale 3D Laser Measurement System

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