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Proceedings Paper

Using inverse fringe projection to speed up the detection of local and global geometry defects on free-form surfaces
Author(s): Andreas Pösch; Taras Vynnyk; Eduard Reithmeier
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Paper Abstract

Inverse fringe projection can be seen as an improvement to the classical fringe projection method to significantly speed up the measurement of geometry defects of optical cooperative workpieces requiring no hardware changes to the classical setup. The CAD model of an ideal specimen is used in a virtual fringe projection system to generate a single sophisticated inverse fringe projection pattern which is, then, projected onto the surface of the real workpiece. Subsequently, 3D-geometry defects can be extracted directly and very quickly from a single image captured by the real camera using elaborate 2D-algorithms. This allows for verification of allowed geometry tolerances with a significantly reduced latency time.

Paper Details

Date Published: 15 October 2012
PDF: 7 pages
Proc. SPIE 8500, Image Reconstruction from Incomplete Data VII, 85000B (15 October 2012); doi: 10.1117/12.928700
Show Author Affiliations
Andreas Pösch, Leibniz Univ. Hannover (Germany)
Taras Vynnyk, Leibniz Univ. Hannover (Germany)
Eduard Reithmeier, Leibniz Univ. Hannover (Germany)

Published in SPIE Proceedings Vol. 8500:
Image Reconstruction from Incomplete Data VII
Philip J. Bones; Michael A. Fiddy; Rick P. Millane, Editor(s)

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