[1] [1] Fornaro G, Franceschetti G, Lanari R, et al. Robust phase-unwrapping techniques: a comparison[J]. Journal of the Optical Society of America A, 1996, 13(12): 2355–2366.

[4] [4] Chavez S, Xiang QS,An L. Understanding phase mapsinMRI: a new cutline phase unwrapping method[J]. IEEE Transactions on Medical Imaging, 2002, 21(8): 966–977.

[6] [6] Goldstein R M, Zebker H A, Werner C L. Satellite radar interfe-rometry: two-dimensional phase unwrapping[J]. Radio Science, 1988, 23(4): 713–720.

[9] [9] Costantini M. A novel phase unwrapping method based on network programming[J]. IEEE Transactions on Geoscience and Remote Sensing, 1998, 36(3): 813–821.

[10] [10] Guo Y, Chen X T, Zhang T. Robust phase unwrapping algorithm based on least squares[J]. Optics and Lasers in Engineering, 2014, 63: 25–29.

[11] [11] Huang K M, Yamada T. Phase unwrapping by regions using least-squares approach[J]. Optical Engineering, 1998, 37(11): 2965–2970.

[12] [12] Flynn T J. Two-dimensional phase unwrapping with minimum weighted discontinuity[J]. Journal of the Optical Society of America A, 1997, 14(10): 2692–2701.

[13] [13] Xu W, Cumming I. A region-growing algorithm for InSAR phase unwrapping[J]. IEEE Transactions on Geoscience and Remote Sensing, 1999, 37(1): 124–134.

[14] [14] Herráez M A,BurtonD R, Lalor M J, et al. Fast two-dimensional phase-unwrapping algorithm based on sorting by reliability fol-lowing a noncontinuous path[J]. Applied Optics, 2002, 41(35): 7437–7444.