Metric performance of a high-resolution laser scanner

Stuart Gordon; Derek D. Lichti; Michael P. Stewart; Maria Tsakiri

doi:10.1117/12.410872

22 December 2000 Metric performance of a high-resolution laser scanner

Stuart Gordon, Derek D. Lichti, Michael P. Stewart, Maria Tsakiri

Proceedings Volume 4309, Videometrics and Optical Methods for 3D Shape Measurement; (2000) https://doi.org/10.1117/12.410872
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

The recent emergence of high-resolution laser scanning technology offers unprecedented levels of data density for close range metrology applications such as deformation monitoring and industrial inspection. The scanner's pulsed laser ranging device coupled with beam deflection mechanisms facilitates rapid acquisition of literally millions of 3D point measurements. Perhaps the greatest advantage of such a system lies in the high sample density that permits accurate and detailed surface modeling as well as superior visualization relative to existing measurement technologies. As with any metrology technique, measurement accuracy is critically dependent upon instrument calibration. This aspect has been, and continues to be, an important research topic within the photogrammetric community. Ground-based laser scanners are no exception, and appropriate calibration procedures are still being developed. The authors' experience has shown that traditional sensor calibration techniques, in some instances, can not be directly applied to laser scanners. This paper details an investigation into the calibration and use the Cyrax 2400 3D laser scanner. With its variable spatial resolution and high accuracy, the Cyrax offers great potential for close range metrology applications. A series of rigorous experiments were conducted in order to quantify the instrument's precision and accuracy.

Citation Download Citation

Stuart Gordon, Derek D. Lichti, Michael P. Stewart, and Maria Tsakiri "Metric performance of a high-resolution laser scanner", Proc. SPIE 4309, Videometrics and Optical Methods for 3D Shape Measurement, (22 December 2000); https://doi.org/10.1117/12.410872

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