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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 307Phase Unwrapping Method Based on Windowed Fourier...

Phase Unwrapping Method Based on Windowed Fourier Transform

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Abstract:

Phase unwrapping is one of the key technologies in electronic speckle pattern interferometry. A new phase unwrapping algorithm, based on windowed Fourier transform is proposed. The high noisy phase map is denoised by the window Fourier transform approach and then is uwrapped by the discrete cosine transform. The method is tested in this paper using a circumferentially fixed circular plate with a point load at the centre and compared with not denoised wrapped phase map and unwrapped phase map. The result shows the new proposed phase unwrapping method in denoising and improving image quality has obvious superiority.

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Mechatronics and Computational Mechanics

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Periodical:

Applied Mechanics and Materials (Volume 307)

Pages:

321-326

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.307.321

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Online since:

February 2013

Authors:

Yan Bin He, Xin Zhong Li, Wei Min Chen, Jun Song Wen

Keywords:

Denoise, Discrete Cosine Transform (DCT), Phase Unwrapping, Windowed Fourier Transform

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] Viotti M R, Kaufmann G H, Galizzi G E. Measurement of elastic moduli using spherical indentation and digital speckle pattern interferometry with automated data processing [J]. Optics and Lasers in Engineering, 2006, 44(6): 495-508.

DOI: 10.1016/j.optlaseng.2005.05.002

[2] Dhanasekar B, Ramamoorthy B. Digital speckle interferometry for assessment of surface roughness [ J ]. Optics and Lasers in Engineering, 2008, 46(3): 272-280.

DOI: 10.1016/j.optlaseng.2007.09.003

[3] Yang L X, Ettemeyer A. Strain mearement by three dimensional electronic speckle pattern interferometry potentials limitations and applications [J]. Optical Engineering, 2003, 42(5): 1257-1266.

DOI: 10.1117/1.1566781

[4] Yang L X, Schuth M, Thomas D, et al. Stroboscopic digital speckle pattern interferometry for vibration analysis of microsystem [ J ]. Optics and Lasers in Engineering, 2009, 47(2) : 252-258.

DOI: 10.1016/j.optlaseng.2008.04.025

[5] Esteban Andres Zarate, Eden Custodia G, Carlos G, et al. Defect detection in metals using electronic speckle pattern interferometry [ J ]. Solar Energy Materials & Solar Cells, 2005, 88(2): 217-225.

DOI: 10.1016/j.solmat.2004.03.009

[6] Gutmann B, Weber H. Phase unwrapping with the branch-cut method: role of phase-field direction [J]. Applied Optics, 2000, 39(26) : 4802-4816.

DOI: 10.1364/ao.39.004802

[7] Dhanasekar B, Ramamoorthy B. Digital speckle interferometry for assessment of surface roughness [J]. Optics and Lasers in Engineering, 2008, 46: 272–280.

DOI: 10.1016/j.optlaseng.2007.09.003

[8] Matham M V, Sujatha N. Digital speckle pattern interferometry for deformation analysis of inner surfaces of cylindrical specimens [J]. Applied Optics, 2004, 43(12): 2400-2408.

DOI: 10.1364/ao.43.002400

[9] Sun P. Evaluation of two-dimensional displacement components of symmetrical deformation by phase-shifting electronic speckle pattern interferometry [J]. Applied Optics, 2007, 46(15): 2859 - 2862.

DOI: 10.1364/ao.46.002859

[10] Fielding E J, Blom R G, Goldstein M R. Rapid subsidence over oil fields measured by SAR interferometry [J]. Geophysical Research Letters, 1998, 25(17): 3215 - 3218.

DOI: 10.1029/98gl52260

[11] Carnee C, Delacourt C. Three years of mining subsidence monitored by SAR interferometry, near gardanne france [J]. Journal of Applied Geophysics, 2000, 43(1): 43-54.

DOI: 10.1016/s0926-9851(99)00032-4

[12] Zebker H A, Rosen P A, Hensleys. Atmospheric effects in interferometric synthetic aperture radar surface deformation and topographic maps [ J ]. Journal of Geophysical Research, 1997, 102(B4): 7547-7563.

DOI: 10.1029/96jb03804

[13] Roger M G, Stephen W J, Ralph P T. Shape and slope measurement by source displacement in shearography [ J ]. Optics and Lasers in Engineering, 2004, 41(4): 621-634.

DOI: 10.1016/s0143-8166(02)00177-x

[14] Kemao Q. Two-dimensional windowed Fourier transform for fringe pattern analysis: principles, applications and implementations[ J ]. Optics and Lasers in Engineering, 2007, 45(2): 304-317.

DOI: 10.1016/j.optlaseng.2005.10.012

[15] Qian K. Windowed Fourier transform for fringe pattern analysis [J]. Applied Optics, 2004, 43(13): 2695-2702.

DOI: 10.1364/ao.43.002695

[16] Kemao Q, Wang H, Gao W. Windowed Fourier transform for fringe pattern analysis: theoretical analyses [J]. Applied Optics, 2008, 47(29): 5408-5419.

DOI: 10.1364/ao.47.005408

[17] Sharpe W N. Springer Handbook of Experimental Solid Mechanics [M]. New York: Springer Science + Business Media, 2008: 666 - 667.

[18] Maas A, Somers P. Two-dimensional deconvolution applied to phase-stepping shearography [ J ]. Optics and Lasers in Engineering, 1997, 26(4-5): 351-360.

DOI: 10.1016/0143-8166(95)00138-7