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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. 2 — A selection of ultracompact spectral imagers. (a) Two snapshot imaging cameras that weighed $< 30 g$ (reproduced from Ref. 76). (b) A handheld snapshot camera that weighed $< 500 g$ (reproduced from Ref. 77). (c) A spatial scanning camera used in UAV applications (reproduced from Ref. 78). (d) A snapscan imaging camera being used in a laboratory setting (reproduced from Ref. 79).