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Optical Engineering

Innovative phase unwrapping algorithm: hybrid approach
Author(s): Min Jui Huang; Cian-Jhih Lai
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Paper Abstract

We present a novel algorithm based on a hybrid of the global and local treatment of a wrapped map. The proposed algorithm is especially effective for the unwrapping of speckle-coded interferogram contour maps. In contrast to earlier unwrapping algorithms by region, we propose a local discontinuity-restoring criterion to serve as the preprocessor or postprocessor of our hybrid algorithm, which makes the unwrapping by region much easier and more efficient. With this hybrid algorithm, a robust, stable, and especially time effective phase unwrapping can be achieved. Additionally, the criterion and limitation of this hybrid algorithm are fully described. The robustness, stability, and speed of this hybrid algorithm are also studied. The proposed algorithm can be easily upgraded with minor modifications to solve the unwrapping problem of maps with phase inconsistency. Both numerical simulation and experimental applications demonstrate the effectiveness of the proposed algorithm.

Paper Details

Date Published: 1 June 2002
PDF: 14 pages
Opt. Eng. 41(6) doi: 10.1117/1.1477441
Published in: Optical Engineering Volume 41, Issue 6
Show Author Affiliations
Min Jui Huang, National Chung Hsing Univ. (Taiwan)
Cian-Jhih Lai, National Chung-Hsing Univ. (Taiwan)

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