Online Triangulation of Laser-Scan Data
Denker, Klaus, Burkhard Lehner, and Georg Umlauf
Proceedings, 17th International Meshing Roundtable, Springer-Verlag, pp.415-432, October 12-15 2008
17th International Meshing Roundtable
Pittsburgh, Pennsylvania, U.S.A.
October 12-15, 2008
Department of Computer Science, University of Kaiserslautern, Germany
Hand-held laser scanners are used massively in industry for reverse engineering
and quality measurements. In this process, it is difficult for the human operator
to scan the target object completely and uniformly. Therefore, an interactive triangulation
of the scanned points can assist the operator in this task.
Our method computes a triangulation of the point stream generated by the laser
scanner online, i.e., the data points are added to the triangulation as they are received
from the scanner. Multiple scanned areas and areas with a higher point density result
in a finer mesh and a higher accuracy. On the other hand, the vertex density adapts to
the estimated surface curvature. To assist the human operator the resulting triangulation
is rendered with a visualization of its faithfulness. Additionally, our triangulation
method allows for a level-of-detail representation to reduce the mesh complexity for
fast rendering on low-cost graphics hardware.
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