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2-D Continuous Wavelet Transform for ESPI phase-maps denoising
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DOI：10.1016/j.optlaseng.2013.03.007.png)
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In this work we introduce a 2-D Continuous Wavelet Transform (2-D CWT) method for denoising ESPI phase-maps. Multiresolution analysis with 2-D wavelets can provide high directional sensitivity and high anisotropy which are proper characteristics for this task. In particular, the 2-D CWT method using Gabor atoms (Gabor mother wavelets) which can naturally model phase fringes, has a good performance against noise and can preserve phase fringes. We describe the theoretical basis of the proposed technique and show some experimental results with real and simulated ESPI phase-maps. As can be verified the proposal is robust and effective. (C) 2013 Elsevier Ltd. All rights reserved.
Keyword:
Fringe analysis
Denoising
Multiresolution analysis
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3.7
论文数:
7.2K
被引数:
1.7W
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