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10 October 2020 High sensitivity fringe projection profilometry combining optimal fringe frequency and optimal fringe direction
Zonghua Zhang, Jin Yu, Nan Gao, Zhaozong Meng
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Proceedings Volume 11551, Holography, Diffractive Optics, and Applications X; 115510K (2020) https://doi.org/10.1117/12.2572961
Event: SPIE/COS Photonics Asia, 2020, Online Only
Abstract
Phase sensitivity plays a vital role in accurately retrieving three-dimensional (3D) shape of diffused objects in fringe projection profilometry (FPP). With regard to traditional means that simply project horizontal or vertical fringe patterns, the fringe frequency and direction are not the best choice to acquire optimal sensitivity to depth variations. This talk will present a novel method to obtain 3D shape with high accuracy by combining the optimal fringe frequency and the optimal fringe direction (OFF + OFD). The simulated and actual experiments have been carried out to demonstrate that the proposed optimization method is feasible and effective in increasing phase sensitivity and measurement accuracy.
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Zonghua Zhang, Jin Yu, Nan Gao, and Zhaozong Meng "High sensitivity fringe projection profilometry combining optimal fringe frequency and optimal fringe direction", Proc. SPIE 11551, Holography, Diffractive Optics, and Applications X, 115510K (10 October 2020); https://doi.org/10.1117/12.2572961
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KEYWORDS
3D metrology
Imaging systems
3D acquisition
Complex systems
Infrared imaging
Light
Data integration
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