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Proceedings Paper

Orthogonal polynomials and global optimization based demodulation of two-shot fringe patterns
Author(s): Chao Tian; Shengchun Liu
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Paper Abstract

We propose a simple yet effective phase demodulation algorithm for two-shot fringe patterns with random phase shifts. The phase to be recovered is decomposed into a linear combination of finite terms of orthogonal polynomials; the expansion coefficients and the phase shift are exhaustively searched through global optimization. The technique is insensitive to noise or defects, and is capable of retrieving phase from low fringe-number interferograms. The retrieved phase is continuous and no further phase unwrapping process is required. The method is expected to be promising to process interferograms with regular fringes.

Paper Details

Date Published: 28 August 2016
PDF: 6 pages
Proc. SPIE 9960, Interferometry XVIII, 996018 (28 August 2016); doi: 10.1117/12.2238342
Show Author Affiliations
Chao Tian, Univ. of Michigan, Ann Arbor (United States)
Shengchun Liu, Heilongjiang Univ. (China)


Published in SPIE Proceedings Vol. 9960:
Interferometry XVIII
Katherine Creath; Jan Burke; Armando Albertazzi Gonçalves, Editor(s)

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