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. 2023 Apr 5;28(4):040901. doi: 10.1117/1.JBO.28.4.040901

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© 2023 The Authors

Published by SPIE under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Fig. 1 — Timeline of the progress in size for spectral imaging. 1. MSS-1, 1972. 2. MSS-2, 1975. 3. CASI, 1989. 4. Digital airborne imaging spectrometer, 1993. 5. Compact high-resolution imaging spectrometer, 2000. 6. Headwall Hyperspec, 2009. 7. Resonon PikaL, 2012. 8. BaySpec OCI-1000, 2014. 9. Imec Snapscan, 2018. 10. Specim IQ, 2018. After the 2000s, spectral imaging systems became remarkably smaller due to manufacturing advances. All selected imaging systems required motion of the camera or the sensor to acquire the spectral cube.