High-speed 3D shape measurement using the optimized composite fringe patterns and stereo-assisted structured light system

Wei Yin , Shijie Feng , Tianyang Tao , Lei Huang , Maciej Trusiak , Qian Chen , Chao Zuo

Abstract

3. In this paper, we propose a high-speed 3D shape measurement technique based on the optimized composite fringe patterns and stereo-assisted structured light system. Stereo phase unwrapping, as a new-fashioned method for absolute phase retrieval based on the multi-view geometric constraints, can eliminate the phase ambiguities and obtain a continuous phase map without projecting any additional patterns. However, in order to ensure the stability of phase unwrapping, the period of fringe is generally around 20, which limits the accuracy of 3D measurement. To solve this problem, we develop an optimized method for designing the composite pattern, in which the speckle pattern is embedded into the conventional 4-step phase-shifting fringe patterns without compromising the fringe modulation, and thus the phase measurement accuracy. We also present a simple and effective evaluation criterion for the correlation quality of the designed speckle pattern in order to improve the matching accuracy significantly. When the embedded speckle pattern is demodulated, the periodic ambiguities in the wrapped phase can be eliminated by combining the adaptive window image correlation with geometry constraint. Finally, some mismatched regions are further corrected based on the proposed regional diffusion compensation technique (RDC). These proposed techniques constitute a complete computational framework that allows to effectively recover an accurate, unambiguous, and distortion-free 3D point cloud with only 4 projected patterns. Experimental results verify that our method can achieve high-speed, high-accuracy, robust 3D shape measurement with dense (64-period) fringe patterns at 5000 frames per second.
Author Wei Yin - [Nanjing University of Science and Technology]
Wei Yin,,
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, Shijie Feng - [Nanjing University of Science and Technology]
Shijie Feng,,
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, Tianyang Tao - [Nanjing University of Science and Technology]
Tianyang Tao,,
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, Lei Huang - [Brookhaven National Laboratory]
Lei Huang,,
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, Maciej Trusiak (FM / IMPh)
Maciej Trusiak,,
- The Institute of Micromechanics and Photonics
, Qian Chen - [Nanjing University of Science and Technology]
Qian Chen,,
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, Chao Zuo - [Nanjing University of Science and Technology]
Chao Zuo,,
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Journal seriesOptics Express, ISSN 1094-4087, (N/A 140 pkt)
Issue year2019
Vol27
No3
Pages2411-2431
Publication size in sheets1
Keywords in Englishphase measurement, phase retrieval, phase unwrapping, speckle patterns, three dimensional measurement, transient phenomena
ASJC Classification3107 Atomic and Molecular Physics, and Optics
DOIDOI:10.1364/OE.27.002411
URL https://www.osapublishing.org/oe/abstract.cfm?uri=oe-27-3-2411
ProjectNumerical advanced phase and amplitude demodulation for optical interference and tomography. Project leader: Trusiak Maciej, , Phone: +48 22234-8637, start date 19-01-2018, planned end date 18-01-2021, 505/00792, Implemented
WM Projects financed by NSC [Projekty finansowane przez NCN]
Languageen angielski
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 20-10-2019, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.567; WoS Impact Factor: 2017 = 3.356 (2) - 2017=3.372 (5)
Citation count*6 (2019-12-03)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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