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31 May 2022 Real-time 3D video imaging with adaptive phase unwrapping method
Wang Xiang
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Proceedings Volume 12098, Dimensional Optical Metrology and Inspection for Practical Applications XI; 1209807 (2022) https://doi.org/10.1117/12.2622650
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States
Abstract
This paper presents a novel method that does not reqire additional images for 3D video imaging with phase unwrapping technique using geometric constrain based on graident field. Specifically, we creat an artificial absolute phase map Φmin at given depth z = zmin from the former frame. We optimize the zmin by validate the continuity of computed unwrapped phase with gradient field and deliver the true minimum z value zmin to next frame. The first frame is reconstructed by a static method. Experiments demonstrate that only three phase-shifted fringe patterns are required to measure moving objects.
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Wang Xiang "Real-time 3D video imaging with adaptive phase unwrapping method", Proc. SPIE 12098, Dimensional Optical Metrology and Inspection for Practical Applications XI, 1209807 (31 May 2022); https://doi.org/10.1117/12.2622650
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KEYWORDS
Cameras
Projection systems
Video
Algorithm development
3D image processing
3D modeling
Phase shifts
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