SH-ToF: Micro resolution time-of-flight imaging with superheterodyne interferometry

Fengqiang Li*, Florian Willomitzer, Prasanna Rangarajan, Mohit Gupta, Andreas Velten, Oliver Strides Cossairt

*Corresponding author for this work

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

7 Scopus citations

Abstract

Three dimensional imaging techniques have been widely used in both industry and academia. Time-of-flight (ToF) sensors offer a promising method of 3D imaging due to compact size and low complexity. However, state-of-the-art ToF sensors only have depth resolutions of centimeters due to limitations in the modulation frequencies that can be used. In this paper, we propose a technique to generate modulation frequencies as high as 1 THz using optical superheterodyne interferometry. Our proposed system provides great flexibility in imaging range and resolution. We experimentally demonstrate an increase in depth resolution by an order of magnitude relative to currently available commercial ToF cameras.

Original languageEnglish (US)
Title of host publicationIEEE International Conference on Computational Photography, ICCP 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-10
Number of pages10
ISBN (Electronic)9781538625262
DOIs
StatePublished - May 29 2018
Event2018 IEEE International Conference on Computational Photography, ICCP 2018 - Pittsburgh, United States
Duration: May 4 2018May 6 2018

Publication series

NameIEEE International Conference on Computational Photography, ICCP 2018

Other

Other2018 IEEE International Conference on Computational Photography, ICCP 2018
CountryUnited States
CityPittsburgh
Period5/4/185/6/18

ASJC Scopus subject areas

  • Signal Processing
  • Computational Mathematics
  • Atomic and Molecular Physics, and Optics

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    Li, F., Willomitzer, F., Rangarajan, P., Gupta, M., Velten, A., & Cossairt, O. S. (2018). SH-ToF: Micro resolution time-of-flight imaging with superheterodyne interferometry. In IEEE International Conference on Computational Photography, ICCP 2018 (pp. 1-10). (IEEE International Conference on Computational Photography, ICCP 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCPHOT.2018.8368473