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Proceedings Paper

Strategies for unwrapping noisy interferograms in phase-sampling interferometry
Author(s): Peter Andrae; Ulrike Mieth; Wolfgang Osten
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Paper Abstract

In recent years, various methods for computer-aided phase reconstruction from phase-shifted interferograms have been developed. The acceptance of these techniques for practical utilization mainly depends on their degree of automation, reliability, and robustness. The main problems to be solved occur in the inverse-modulo process (phase unwrapping). There are already many solutions differing in robustness and complexity. This paper deals with the description and classification of the processing difficulties and some strategies to avoid them or to diminish their influences. First results of a new procedure considering the phase discontinuity field in a global way are presented. This topology-based approach opens the possibility of model- and knowledge-based processing of phase-shifted interferograms.

Paper Details

Date Published: 1 October 1991
PDF: 11 pages
Proc. SPIE 1508, Industrial Applications of Holographic and Speckle Measuring Techniques, (1 October 1991); doi: 10.1117/12.47088
Show Author Affiliations
Peter Andrae, Bremer Institut fuer Angewandte Strahltechnik (Germany)
Ulrike Mieth, Institute for Image Processing (Germany)
Wolfgang Osten, Institute for Image Processing (Germany)

Published in SPIE Proceedings Vol. 1508:
Industrial Applications of Holographic and Speckle Measuring Techniques
Werner P. O. Jueptner, Editor(s)

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