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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.
Jiaqiong Li,Yi Zheng, andBeiwen 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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Jiaqiong Li, Yi Zheng, 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