Design of temporal phase unwrapping algorithms

Yudong Hao; Yang Zhao; Dacheng Li

doi:10.1117/12.368502

4 November 1999 Design of temporal phase unwrapping algorithms

Yudong Hao, Yang Zhao, Dacheng Li

Proceedings Volume 3898, Photonic Systems and Applications in Defense and Manufacturing; (1999) https://doi.org/10.1117/12.368502
Event: International Symposium on Photonics and Applications, 1999, Singapore, Singapore

Abstract

Phase unwrapping is an inevitable process in modern phase- evaluation based fringe analysis because the arctangent functions used in phase extraction only return phase modulo 2(pi) . In recent years, several temporal phase unwrapping methods have been proposed, which use a couple of phase maps with different sensitivities for the unique determination of the unwrapped phase on a pixel-by-pixel basis. We have found that, however, some of them are not effectively designed, probably due to the lack of proper philosophy for guidance. In this paper, we present a generalized mathematical excess fraction method, which is more compete and general in nature and can be used to re-interpret those temporal phase unwrapping algorithms in a unifying perspective. It is also demonstrated that more efficient and flexible algorithms can be designed based on the principle of the generalized excess fraction method.

Citation Download Citation

Yudong Hao, Yang Zhao, and Dacheng Li "Design of temporal phase unwrapping algorithms", Proc. SPIE 3898, Photonic Systems and Applications in Defense and Manufacturing, (4 November 1999); https://doi.org/10.1117/12.368502

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