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Improving light efficiency in multispectral imaging via complementary notch filters

Panther, Theresa 1; Schambach, Maximilian ORCID iD icon 1; Heizmann, Michael 1
1 Institut für Industrielle Informationstechnik (IIIT), Karlsruher Institut für Technologie (KIT)


We propose a novel multispectral imaging technique employing complementary notch filters instead of bandpass filters which are conventionally used in filter-based multispectral cameras. Therefore, only little power of the incoming photon signal is lost and thus the SNR of the multispectral data can be significantly improved. To validate the proposed approach, simulations of conventional bandpass filters as well as complementary notch filters are presented. To compare the resulting SNRs, the EMVA 1288 standard is adopted in such a way that it is applicable to notch filter-based multispectral cameras. It is found that the SNR can be significantly improved by using complementary filters instead of the conventional bandpass filters, especially at high spectral resolution.

Preprint §
DOI: 10.5445/IR/1000135075
Veröffentlicht am 23.05.2023
DOI: 10.1117/12.2592411
Zitationen: 2
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Industrielle Informationstechnik (IIIT)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 30.06.2021
Sprache Englisch
Identifikator ISBN: 978-1-5106-4408-3
ISSN: 0038-7355, 0361-0748, 0277-786X, 1996-756X
KITopen-ID: 1000135075
Erschienen in Automated Visual Inspection and Machine Vision IV, Online only, June 21 - 25, 2021. Ed.: J. Beyerer
Veranstaltung SPIE Optical Metrology (2021), Online, 21.06.2021 – 25.06.2021
Verlag Society of Photo-optical Instrumentation Engineers (SPIE)
Seiten Article no: 117870K
Serie Proceedings of SPIE ; 11787
Schlagwörter multispectral imaging, complementary filters, EMVA 1288
Nachgewiesen in Dimensions
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