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Proceedings Paper

Reverse engineering by fringe projection
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Paper Abstract

We report on the development of a versatile and portable optical profilometer and show its applicability for quick and accurate digitization of 3-D objects. The profilometer is an advanced fringe-projection system that uses a calibrated LCD matrix for fringe-pattern generation, a hierarchical sequence of fringe patterns to demodulate the measured phase, and a photogrammetric calibration technique to obtain accurate 3-D data in the measurement volume. The setup in itself is mechanically stable and allows for a measurement volume of about 1x1x0.5 m3. We discuss the calibration of the sensor and demonstrate the process of recording phase data for several sub-views, generating 3-D point clouds from them, and synthesizing the CAD representation of an entire 3-D object by merging the data sets.

Paper Details

Date Published: 19 June 2002
PDF: 13 pages
Proc. SPIE 4778, Interferometry XI: Applications, (19 June 2002); doi: 10.1117/12.473547
Show Author Affiliations
Jan Burke, MetroLaser, Inc. (United States)
Thorsten Bothe, Bremer Institut fuer Angewandte Strahltechnik (Germany)
Wolfgang Osten, Bremer Institut fuer Angewandte Strahltechnik (Germany)
Cecil F. Hess, MetroLaser, Inc. (United States)

Published in SPIE Proceedings Vol. 4778:
Interferometry XI: Applications
Wolfgang Osten, Editor(s)

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