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| Calibration of a LargeScale 3D Laser Measurement System |
| GUO Yang-a, DU Zheng-Chun-a, b , YAO Zhen-Qiang-a, b |
| (a School of Mechanical Engineering; b State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract The calibration method of 3D 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.
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Received: 30 December 2010
Published: 28 February 2012
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