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Development of a desktop freehand 3-D surface reconstruction system

By K. C. Lim, M. Boissenin, B. P. Amavasai and R. Saatchi

Abstract

This paper discusses the development of a freehand 3-D surface reconstruction system. The system was constructed by making use of readily available off-the-shelf components, namely a laser line emitter and a webcam. The 3-D laser scanner system allows the user to hand sweep the laser line across the object to be scanned. The 3-D surface information of the object Is captured as follows. A series of digital images of the laser line, generated by the intersection of the laser plane, the surface of the object and the background planar object were captured and stored in a PC. The points on the laser line were extracted. The 2-D laser points that were found on the surface of the planar object were projected onto the 3-D space using a pinhole camera model. The laser plane was calibrated. Using the 2-D laser points found on the surface of the 3-D object, a cloud of 3-D points which represent the surface of the object being scanned was generated by triangulation. For the laser plane calibration two different methods were implemented. Their performance were compared

Publisher: IEEE
Year: 2008
OAI identifier: oai:shura.shu.ac.uk:1663
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