1 June 2002 Innovative phase unwrapping algorithm: hybrid approach
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Optical Engineering, 41(6), (2002). doi:10.1117/1.1477441
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.
Min Jui Huang, Cian-Jhih Lai, "Innovative phase unwrapping algorithm: hybrid approach," Optical Engineering 41(6), (1 June 2002). http://dx.doi.org/10.1117/1.1477441
JOURNAL ARTICLE
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KEYWORDS
Floods

Optical engineering

Computer simulations

Phase shifts

Image processing

Algorithm development

Interferometry

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