Unwrapping of digital speckle pattern interferometry phase maps using a minimum L0-norm algorithm

Guillermo H. Kaufmann; Pablo D. Ruiz; Gustavo E. Galizzi

doi:10.1117/12.312934

30 June 1998 Unwrapping of digital speckle pattern interferometry phase maps using a minimum L⁰-norm algorithm

Guillermo H. Kaufmann, Pablo D. Ruiz, Gustavo E. Galizzi

Proceedings Volume 3478, Laser Interferometry IX: Techniques and Analysis; (1998) https://doi.org/10.1117/12.312934
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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.

Citation Download Citation

Guillermo H. Kaufmann, Pablo D. Ruiz, and Gustavo E. Galizzi "Unwrapping of digital speckle pattern interferometry phase maps using a minimum L⁰-norm algorithm", Proc. SPIE 3478, Laser Interferometry IX: Techniques and Analysis, (30 June 1998); https://doi.org/10.1117/12.312934

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