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Fast non-line-of-sight imaging with high-resolution and wide field of view using synthetic wavelength holography

Author

Listed:
  • Florian Willomitzer

    (Northwestern University)

  • Prasanna V. Rangarajan

    (Southern Methodist University)

  • Fengqiang Li

    (Northwestern University)

  • Muralidhar M. Balaji

    (Southern Methodist University)

  • Marc P. Christensen

    (Southern Methodist University)

  • Oliver Cossairt

    (Northwestern University
    Northwestern University)

Abstract

The presence of a scattering medium in the imaging path between an object and an observer is known to severely limit the visual acuity of the imaging system. We present an approach to circumvent the deleterious effects of scattering, by exploiting spectral correlations in scattered wavefronts. Our Synthetic Wavelength Holography (SWH) method is able to recover a holographic representation of hidden targets with sub-mm resolution over a nearly hemispheric angular field of view. The complete object field is recorded within 46 ms, by monitoring the scattered light return in a probe area smaller than 6 cm × 6 cm. This unique combination of attributes opens up a plethora of new Non-Line-of-Sight imaging applications ranging from medical imaging and forensics, to early-warning navigation systems and reconnaissance. Adapting the findings of this work to other wave phenomena will help unlock a wider gamut of applications beyond those envisioned in this paper.

Suggested Citation

  • Florian Willomitzer & Prasanna V. Rangarajan & Fengqiang Li & Muralidhar M. Balaji & Marc P. Christensen & Oliver Cossairt, 2021. "Fast non-line-of-sight imaging with high-resolution and wide field of view using synthetic wavelength holography," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26776-w
    DOI: 10.1038/s41467-021-26776-w
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    References listed on IDEAS

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