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Optical Engineering

Robust phase retrieval of complex-valued object in phase modulation by hybrid Wirtinger flow method
Author(s): Zhun Wei; Wen Chen; Tiantian Yin; Xudong Chen
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Paper Abstract

This paper presents a robust iterative algorithm, known as hybrid Wirtinger flow (HWF), for phase retrieval (PR) of complex objects from noisy diffraction intensities. Numerical simulations indicate that the HWF method consistently outperforms conventional PR methods in terms of both accuracy and convergence rate in multiple phase modulations. The proposed algorithm is also more robust to low oversampling ratios, loose constraints, and noisy environments. Furthermore, compared with traditional Wirtinger flow, sample complexity is largely reduced. It is expected that the proposed HWF method will find applications in the rapidly growing coherent diffractive imaging field for high-quality image reconstruction with multiple modulations, as well as other disciplines where PR is needed.

Paper Details

Date Published: 28 September 2017
PDF: 7 pages
Opt. Eng. 56(9) 093106 doi: 10.1117/1.OE.56.9.093106
Published in: Optical Engineering Volume 56, Issue 9
Show Author Affiliations
Zhun Wei, National Univ. of Singapore (Singapore)
Wen Chen, The Hong Kong Polytechnic Univ. (China)
The Hong Kong Polytechnic Univ., Shenzhen Research Institute (China)
Tiantian Yin, National Univ. of Singapore (Singapore)
Xudong Chen, National Univ. of Singapore (Singapore)

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