Imaging Components, Systems, and Processing

Phase retrieval of optical fringe pattern using wavelet ridge section and adaptive bandpass filter

[+] Author Affiliations
Rong Zou

Jiangsu University, School of Mechanical Engineering, Zhenjiang 212013, China

Shilin Cui

NanYang Institute of Science and Technology, School of Electrical and Electronic Engineering, Nanyang 473004, China

Huazhong University of Science and Technology, School of Automation, Wuhan 430074, China

Fei Tian

NanYang Institute of Science and Technology, School of Electrical and Electronic Engineering, Nanyang 473004, China

Qingguang Li

Huazhong University of Science and Technology, School of Automation, Wuhan 430074, China

Ming Yao

University of Texas at Austin, Department of Biomedical Engineering, Texas 78712, United States

Opt. Eng. 55(9), 093103 (Sep 14, 2016). doi:10.1117/1.OE.55.9.093103
History: Received June 20, 2016; Accepted August 24, 2016
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Abstract.  To improve the accuracy of fringe projection profilometry for a single deformed pattern, an instantaneous phase retrieval method is proposed using a wavelet ridge section and an adaptive bandpass filter based on dyadic wavelets. First, we present a concept and assumption named wavelet ridge section to depict the instantaneous phases of the deformed fringe signals, which are also degraded by noise, and then introduce a formula to calculate the width of the wavelet ridge section. Furthermore, an adaptive bandpass filter is designed for extracting the wavelet subsignals corresponding to the wavelet ridge sections to reconstruct the analytical signal. Finally, the instantaneous phase of the distorted fringe pattern is effectively retrieved. All parameters of our method are designed to be adaptive for different fringe patterns. Our experiments indicate that the proposed method is effective for measurements and outperforms other existing mainstream wavelet transform profilometry techniques, not only in accuracy but also in noise suppression performance.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Rong Zou ; Shilin Cui ; Fei Tian ; Qingguang Li and Ming Yao
"Phase retrieval of optical fringe pattern using wavelet ridge section and adaptive bandpass filter", Opt. Eng. 55(9), 093103 (Sep 14, 2016). ; http://dx.doi.org/10.1117/1.OE.55.9.093103


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