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Proceedings Paper

Single-frame evaluation of object-adapted fringes
Author(s): Tobias Haist; Ernst Ulrich Wagemann; Hans J. Tiziani
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Paper Abstract

We present two fast methods for the evaluation of object- adapted fringe images. One method, a fast and simple skeleton method, is purely digital. The method is stable against varying object reflectivities and illumination conditions. We also demonstrate the optical evaluation of object-adapted fringe images by means of a moire technique. This second method uses a Ronchi grating for the optical processing of the images in order to detect topographic defects with high speed. Additionally, we present a new method for the generation of object-adapted fringe masks where only a few images have to be recorded in order to obtain the mask.

Paper Details

Date Published: 9 September 1999
PDF: 10 pages
Proc. SPIE 3823, Laser Metrology and Inspection, (9 September 1999); doi: 10.1117/12.361000
Show Author Affiliations
Tobias Haist, Univ. Stuttgart (Germany)
Ernst Ulrich Wagemann, Univ. Stuttgart (Germany)
Hans J. Tiziani, Univ. Stuttgart (Germany)

Published in SPIE Proceedings Vol. 3823:
Laser Metrology and Inspection
Hans J. Tiziani; Pramod Kumar Rastogi, Editor(s)

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