Study on unwrapping of discontinuous phase flaws based on Goldstein branch-cut theory
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1.
Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China;
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2.
Department of Mechanical and Biomedical Engineering, City University of Hongkong, Hongkong SAR, China
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Corresponding author:
CHEN Jianming, jmchen@inems.com
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Received Date:
2013-10-11
Accepted Date:
2013-10-30
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Abstract
The Goldstein branch-cut method is a traditional method for phase unwrapping. Its phase unwrapping result is easily affected by phase residues caused by noise and discontinuous phase flaws in practice. To characterize effect of discontinuous phase on unwrapping algorithm, after simulating a data base for discontinuous phase, unwrapping was studied with Goldstein branch-cut phase unwrapping method. The effect of the residual phase on the size of the searching window radius was focused on specifically. The unwrapped phase was compared with the actual phase. The results show that accurate unwrapped phases can be obtained in situations with one and two disjointed discontinuity flaws. Accurate unwrapping phase results cannot be obtained in situations with two crossing phase discontinuous flaws. Good results can not be obtained for two crossing phase discontinuous flaws. Different discontinuous phase flaws have different effective branch cut searching window radius. There is an effective searching window radius for the Goldstein branch-cut approach. Those results can provide reference to research of the phase unwrapping only and jointly with Goldstein branch-cut.
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References
|
[1]
|
LI B,QIAN X F,LI X H,et al. Phase-unwrapping algorithm based on radial shearing principle[J]. Laser Technology, 2013,37(1):44-47(in Chinese). |
|
[2]
|
YANG F T, LUO J L, LIU Z Q,et al. Comparison of six phase unwrapping algorithms[J].Laser Technology,2008,32(3):323-326(in Chinese). |
|
[3]
|
GHIGLIA D C, PRITT M D. Two-dimensional phase unwrapping: theory, algorithms, and software [M]. New York,USA:Wiley, 1998:103-121. |
|
[4]
|
GOLDSTEIN R M, ZEBKER H A, WERNER C L. Satellite radar interferometry:two-dimensional phase unwrapping [J]. Radio Science, 1988, 23(4): 713-720. |
|
[5]
|
ITOH K. Analysis of the phase unwrapping algorithm [J]. Applied Optics, 1982, 21(14): 2470-2470. |
|
[6]
|
BONE D J. Fourier fringe analysis: the two-dimensional phase unwrapping problem [J]. Applied Optics, 1991, 30(25): 3627-3632. |
|
[7]
|
COSTANTINI M. A novel phase unwrapping method based on network programming [J]. IEEE Transactions on Geoscience and Remote Sensing,1998,36(3):813-821. |
|
[8]
|
FLYNN T J. Two-dimensional phase unwrapping with minimum weighted discontinuity [J]. Journal of the Optical Society of America, 1997, 14(10): 2692-2701. |
|
[9]
|
OESCH D W, SANCHEZ D J, TEWKSBURY-CHRISTLE C M. Aggregate behavior of branch points-persistent pairs [J]. Optics Express, 2012, 20(2): 1046-1059. |
|
[10]
|
HANSSEN R F. Radar interferometry: data interpretation and error analysis [M]. Dordrecht,Netherlands: Kluwer Academic Publishers, 2001:22-23. |
|
[11]
|
BAO Zh, XIN M D, WANG T. Radar imaging technology [M]. Beijing: Publishing House of Electronics Industry, 2005:310-311(in Chinese). |
|
[12]
|
ASUNDI A, WENSEN Z. Fast phase-unwrapping algorithm based on a gray-scale mask and flood fill[J]. Applied Optics, 1998, 37(23): 5416-5420. |
|
[13]
|
LEI S, ZHANG S. Digital sinusoidal fringe pattern generation: defocusing binary patterns vs focusing sinusoidal patterns[J]. Optics and Lasers in Engineering, 2010, 48(5): 561-569. |
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