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Laser Triangulation Using Spacetime Analysis
Linköping University, Department of Electrical Engineering, Computer Vision. Linköping University, The Institute of Technology.
2007 (English)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this thesis spacetime analysis is applied to laser triangulation in an attempt to eliminate certain artifacts caused mainly by reflectance variations of the surface being measured. It is shown that spacetime analysis do eliminate these artifacts almost completely, it is also shown that the shape of the laser beam used no longer is critical thanks to the spacetime analysis, and that in some cases the laser probably even could be exchanged for a non-coherent light source. Furthermore experiments of running the derived algorithm on a GPU (Graphics Processing Unit) are conducted with very promising results.

The thesis starts by deriving the theory needed for doing spacetime analysis in a laser triangulation setup taking perspective distortions into account, then several experiments evaluating the method is conducted.

Place, publisher, year, edition, pages
Institutionen för systemteknik , 2007. , 73 p.
Keyword [en]
laser triangulation, camera geometry, spacetime analysis, range imaging, parallelization, gpgpu
National Category
Computer Vision and Robotics (Autonomous Systems)
URN: urn:nbn:se:liu:diva-10522ISRN: LITH-ISY-EX--07/4047--SEOAI: diva2:17262
Subject / course
Computer Vision Laboratory
2007-12-21, Algoritmen, Campus Valla, Hus B, Linköpings universitet, Linköping, 10:15
Available from: 2008-01-14 Created: 2008-01-14 Last updated: 2012-07-02

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Computer Vision and Robotics (Autonomous Systems)

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