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Two-dimensional continuous wavelet transform algorithm for phase extraction of two-step arbitrarily phase-shifted interferograms
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DOI：10.1016/j.optlaseng.2013.11.009.png)
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By virtue of the anti-noise and anti-defect abilities, in this paper, a two-dimensional continuous wavelet transform algorithm is proposed to analyze two-step arbitrarily phase-shifted interferograms with an orthonormalization process. The novel algorithm takes the advantages of the two existing ones, and it has a remarkable ability to accurately and automatically extract full-field phase distribution from two phase-shifted interferograms where they may contain arbitrary and unknown phase shift, complex fringes with phase ambiguity, large fringe-frequency variations, noise, defects and corrupted fringes. The validity of the algorithm is demonstrated by both computer simulation and real experiments. (C) 2013 Elsevier Ltd. All rights reserved.
Keyword:
Interferogram analysis
Fringe pattern analysis
Phase-shifting technique
Continuous wavelet transform
Phase extraction
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3.7
论文数:
7.3K
被引数:
1.7W
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