期刊
MEASUREMENT SCIENCE AND TECHNOLOGY
卷 30, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6501/aaec5c
关键词
phase unwrapping algorithm; transport of intensity equation; phase correction
资金
- National Natural Science Foundation of China [51705404, 61471288]
- China Postdoctoral Science Foundation [2016M602806]
- Fundamental Research Funds for the Central Universities [xjj2017093]
2D phase-unwrapping algorithms (PUAs) are commonly used to obtain a continuous phase map from the sawtooth-shaped phase map. However, implementing PUAs can be time consuming, and the accuracy of those algorithms may be low if there is heavy noise. In this paper, we develop a simple and robust PUA based on the transport of intensity equation (TIE). In our method, the TIE was solved using the fast cosine transform, and a phase correction operation was introduced after the TIE was solved. Because of the phase correction operation, the proposed method can obtain a satisfactory unwrapping result even in a notably hash noise condition. The simulation and experimental results are presented to validate the effectiveness of the proposed method.
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