Multispectral time-of-flight imaging using light-emitting diodes

Research output: Contribution to journalArticle

1 Citation (Scopus)
7 Downloads (Pure)

Abstract

Multispectral and 3-D imaging are useful for a wide variety of applications, adding valuable spectral and depth information for image analysis. Single-photon avalanche diode (SPAD) based imaging systems provide photon time-of-arrival information, and can be used for imaging with time-correlated single photon counting techniques. Here we demonstrate an LED based synchronised illumination system, where temporally structured light can be used to relate time-of-arrival to specific wavelengths, thus recovering reflectance information. Cross-correlation of the received multi-peak histogram with a reference measurement yields a time delay, allowing depth information to be determined with cm-scale resolution despite the long sequence of relatively wide (~10 ns) pulses. Using commercial LEDs and a SPAD imaging array, multispectral 3-D imaging is demonstrated across 9 visible wavelength bands.
Original languageEnglish
Pages (from-to)35485-35498
Number of pages14
JournalOptics Express
Volume27
Issue number24
DOIs
Publication statusPublished - 25 Nov 2019

Keywords

  • SPAD
  • light-emitting diode
  • imaging
  • time-of-flight

Fingerprint Dive into the research topics of 'Multispectral time-of-flight imaging using light-emitting diodes'. Together they form a unique fingerprint.

  • Projects

    Datasets

    Multispectral time-of-flight SPAD camera image data

    Griffiths, A. (Creator), University of Strathclyde, 22 Oct 2019

    Dataset

    Cite this