Hyperspectral Imaging under Low Illumination with a Single Photon Camera

Alexander D. Griffiths, Haochang Chen, Johannes Herrnsdorf, David Li, Robert K. Henderson, Michael J. Strain, Martin D. Dawson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Conventional sensors for hyperspectral imaging are limited by noise when operated in low illumination conditions. Recent advances in single-photon avalanche diode (SPAD) arrays provide image sensors capable of single photon counting imaging. Such devices provides camera systems which can operate under low illumination levels and high frame rates, with fully digital in-pixel processing capabilities. Here, we present a hyperspectral imaging system based on low level illumination of a target scene using nine LEDs, each with different emission wavelengths. The backscattered light is captured by a SPAD camera, which can recover spectral information based on the number of photon counts received for each illumination wavelength.

Original languageEnglish
Title of host publication2018 British and Irish Conference on Optics and Photonics, BICOP 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538673614
DOIs
Publication statusPublished - 4 Mar 2019
Event1st IEEE British and Irish Conference on Optics and Photonics, BICOP 2018 - London, United Kingdom
Duration: 12 Dec 201814 Dec 2018

Publication series

Name2018 British and Irish Conference on Optics and Photonics, BICOP 2018 - Proceedings

Conference

Conference1st IEEE British and Irish Conference on Optics and Photonics, BICOP 2018
CountryUnited Kingdom
CityLondon
Period12/12/1814/12/18

Keywords

  • Hyperspectral imaging
  • LED
  • SPAD

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