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Proceedings Paper

Application of phase unwrapping algorithm based on least-squares and iteration in digital holography
Author(s): Haiting Xia; Rongxin Guo; Zebin Fan; Xiaofan Qian; Bangcheng Yang
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Paper Abstract

Phase unwrapping is an important content of digital holography, which gets continual and real phase from wrapped phase. The least-squares phase unwrapping is a fast and effective method. But for wrapped phases with complicated variation and much noise, the unwrapped phase got by least-squares method will produce errors. In this paper iterative unwrapping of phase difference is combined with least-squares unwrapping to eliminate the errors. This method is used in digital holography to unwrap phases with complicated variation. The phase variation of object wave through a polymethyl methacrylate (PMMA) specimen with a hole under uniform tensile force is measured by holography. The phase is unwrapped by phase unwrapping based on least-squares and iteration. The cosine patterns of unwrapped phase and wrapped phase are consistent. Which means this method is correct and can be used to unwrap phases with complicated variation and much noise.

Paper Details

Date Published: 17 November 2010
PDF: 6 pages
Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 78481J (17 November 2010); doi: 10.1117/12.869822
Show Author Affiliations
Haiting Xia, Kunming Univ. of Science and Technology (China)
Rongxin Guo, Kunming Univ. of Science and Technology (China)
Zebin Fan, Kunming Univ. of Science and Technology (China)
Xiaofan Qian, Kunming Univ. of Science and Technology (China)
Bangcheng Yang, Kunming Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7848:
Holography, Diffractive Optics, and Applications IV
Yunlong Sheng; Chongxiu Yu; Linsen Chen, Editor(s)

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