Point-Wise Phase Estimation Method in Fringe Projection Profilometry under Non-Sinusoidal Distortion.

Zhuoyi Yin, Cong Liu, Chuang Zhang, Xiaoyuan He, Fujun Yang

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In one paragraph

Article in Sensors (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Zhuoyi YinSchool of Civil Engineering, Southeast University, Nanjing 211189, China.ORCID 0000-0002-8970-4092

Cong LiuSchool of Science, Nanjing University of Science and Technology, Nanjing 210094, China.

Chuang ZhangSchool of Science, Nanjing University of Science and Technology, Nanjing 210094, China.

Xiaoyuan HeSchool of Civil Engineering, Southeast University, Nanjing 211189, China.

Fujun YangSchool of Civil Engineering, Southeast University, Nanjing 211189, China.

Funding

China Postdoctoral Science Foundation No. 2020M671493, and 2019M652433National Natural Science Foundation of China No.11802132Natural Science Foundation of Jiangsu Province No. BK20180446Postgraduate Research & Practice Innovation Program of Jiangsu Province No. KYCX22_0223

6 · The paper itself

Abstract

In fringe projection profilometry, high-order harmonics information of distorted fringe will lead to errors in the phase estimation. In order to solve this problem, a point-wise phase estimation method based on a neural network (PWPE-NN) is proposed in this paper. The complex nonlinear mapping relationship between the gray values and the phase under non-sinusoidal distortion is constructed by using the simple neural network model. It establishes a novel implicit expression for phase solution without complicated measurement operations. Compared with the previous method of combining local image information, it can accurately calculate each phase value by point. The comparison results show that the traditional method is with periodic phase errors, while the proposed method can effectively eliminate phase errors caused by non-sinusoidal phase shifting.

Indexed as

fringe projection profilometrynon-sinusoidalphase estimationphase shifting

Identifiers

PMID35746259

DOI10.3390/s22124478

PMCPMC9229926

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.