Reverse engineering by fringe projection

Jan Burke; Thorsten Bothe; Wolfgang Osten; Cecil F. Hess

doi:10.1117/12.473547

19 June 2002 Reverse engineering by fringe projection

Jan Burke, Thorsten Bothe, Wolfgang Osten, Cecil F. Hess

Proceedings Volume 4778, Interferometry XI: Applications; (2002) https://doi.org/10.1117/12.473547
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

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.

Citation Download Citation

Jan Burke, Thorsten Bothe, Wolfgang Osten, and Cecil F. Hess "Reverse engineering by fringe projection", Proc. SPIE 4778, Interferometry XI: Applications, (19 June 2002); https://doi.org/10.1117/12.473547

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