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Modelling and calibration of the laser beam-scanning triangulation measurement system

โœ Scribed by Guoyu Wang; Bing Zheng; Xin Li; Z. Houkes; P.P.L. Regtien

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
235 KB
Volume
40
Category
Article
ISSN
0921-8890

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โœฆ Synopsis

We present an approach of modelling and calibration of an active laser beam-scanning triangulation measurement system. The system works with the pattern of two-dimensional beam-scanning illumination and one-dimensional slit-scanning detection with a photo-multiplier tube instead of a CCD camera. By modelling the system-fixed coordinate, we describe the formulation of 3D computation and propose a calibration method in terms of LSE using a planar fitting algorithm. As a sensor-dependent solution, the estimation is refined in the domain of sensing variables. Result of calibration of the real system and a brief analysis of systematic errors are given.

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