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30 May 2022 Single-camera line-scan hyperspectral 4D imaging based on fringe projection
Jiaqiong Li, Yi Zheng, Beiwen Li
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Proceedings Volume PC12098, Dimensional Optical Metrology and Inspection for Practical Applications XI; PC1209803 (2022) https://doi.org/10.1117/12.2622527
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States
Abstract
This paper proposes a single-camera line-scan hyperspectral four-dimensional imaging technique, which can simultaneously retrieve accurate 3D geometrical information and high-resolution hyperspectral information. The system contains a camera attached to a line spectrograph, a video projector, and a linear guideway. Then the mathematical model for line-scan fringe projection profilometry as well as the 3D reconstruction and spectral calibration methods are investigated. The system can simultaneously achieve high spectral resolution (2.8 nm) and geometric measurement accuracy (0.0895 mm). Test cases will demonstrate that the system can obtain rich spectral and surface topographical information and has potential application in the food industry.
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Jiaqiong Li, Yi Zheng, and Beiwen Li "Single-camera line-scan hyperspectral 4D imaging based on fringe projection", Proc. SPIE PC12098, Dimensional Optical Metrology and Inspection for Practical Applications XI, PC1209803 (30 May 2022); https://doi.org/10.1117/12.2622527
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KEYWORDS
Hyperspectral imaging
Line scan image sensors
Computing systems
Nondestructive evaluation
Optical sensing
Projection systems
Spatial resolution
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