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Proceedings Paper

Unwrapping of digital speckle pattern interferometry phase maps using a minimum L0-norm algorithm
Author(s): Guillermo H. Kaufmann; Pablo D. Ruiz; Gustavo E. Galizzi
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Paper Abstract

The performance of a minimum L0-norm unwrapping algorithm is investigated using computer-simulated digital speckle pattern interferometry (DSPI) wrapped phase maps. This algorithm estimates its own weights in order to mask inconsistent pixels. Particular features usually included in DSPI wrapped phase maps such as shears, speckle noise, fringe cuts, object physical limits, and superimposed fringe patterns are analyzed. Some adequate approaches to solve these features are discussed. It is shown that a complex case in which shears and fringe cuts coexist in the wrapped phase map cannot be successfully solved by the minimum L0-norm algorithm on its own. In order to cope with this problem, a new scheme is proposed.

Paper Details

Date Published: 30 June 1998
PDF: 11 pages
Proc. SPIE 3478, Laser Interferometry IX: Techniques and Analysis, (30 June 1998); doi: 10.1117/12.312934
Show Author Affiliations
Guillermo H. Kaufmann, Univ. Nacional de Rosario (Argentina)
Pablo D. Ruiz, Univ. Nacional de Rosario (Argentina)
Gustavo E. Galizzi, Univ. Nacional de Rosario (Argentina)

Published in SPIE Proceedings Vol. 3478:
Laser Interferometry IX: Techniques and Analysis
Malgorzata Kujawinska; Gordon M. Brown; Mitsuo Takeda, Editor(s)

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