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Compact and robust hyperspectral camera based on compressed sensing
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SYSNO ASEP 0469350 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Compact and robust hyperspectral camera based on compressed sensing Tvůrce(i) Žídek, Karel (UFP-V) ORCID
Denk, Ondřej (UFP-V)
Hlubuček, Jiří (UFP-V)
Václavík, Jan (UFP-V) RIDČíslo článku 101510N Zdroj.dok. Proceedings of SPIE 10151, Optics and Measurement International Conference 2016, OAM 2016 Proceedings, 10151. - Bellingham : SPIE, Society of Photo-Optical Instrumentation Engineers, 2016 / Kovačičinová J. - ISSN 0277-786X - ISBN 978-1-5106-0753-8 Poč.str. 7 s. Forma vydání Tištěná - P Akce OAM 2016, Optics and Measurement International Conference 2016 Datum konání 11.10.2016 - 14.10.2016 Místo konání Liberec Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova hyperspectral camera ; compressed sensing ; single-snapshot spectral imaging ; spati-spectral reconstruction Vědní obor RIV JA - Elektronika a optoelektronika, elektrotechnika CEP LO1206 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFP-V - RVO:61389021 UT WOS 000393154700023 EID SCOPUS 85012862728 DOI https://doi.org/10.1117/12.2250268 Anotace Spectrum of light which is emitted or reflected by an object carries immense amount of information about the object. A simple piece of evidence is the importance of color sensing for human vision. Combining an image acquisition with efficient measurement of light spectra for each detected pixel is therefore one of the important issues in imaging, referred as hyperspectral imaging. We demonstrate a construction of a compact and robust hyperspectral camera for the visible and near-IR spectral region. The camera was designed vastly based on off-shelf optics, yet an extensive optimization and addition of three customized parts enabled construction of the camera featuring a low f-number (F/3.9) and fully concentric optics. We employ a novel approach of compressed sensing (namely coded aperture snapshot spectral imaging, abbrev. CASSI). The compressed sensing enables to computationally extract an encoded hyperspectral information from a single camera exposition. Owing to the technique the camera lacks any moving or scanning part, while it can record the full image and spectral information in a single snapshot. Moreover, unlike the commonly used compressed sensing table-top apparatuses, the camera represents a portable device able to work outside a lab. We demonstrate the spectro-temporal reconstruction of recorded scenes based on 90×90 random matrix encoding. Finally, we discuss potential of the compressed sensing in hyperspectral camera. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2017
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