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Non-line-of-sight imaging via wavefront shaping

Cao, Ruizhi and de Goumoens, Frederic and Blochet, Baptiste and Xu, Jian and Yang, Changhuei (2022) Non-line-of-sight imaging via wavefront shaping. In: Adaptive Optics and Wavefront Control for Biological Systems VIII. Proceedings of SPIE. No.PC11969. Society of Photo-optical Instrumentation Engineers , Bellingham, WA, Art. No. PC119690H.

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Non-line-of-sight (NLOS) imaging is a rapidly developing research direction that has significant applications in autonomous vehicles, remote sensing, etc. Existing NLOS methods primarily depend on time gated measurements and/or sophisticated signal processing to extract information from the scattered light. Here, we introduce a new method that directly manipulates the light to counter the wall’s scattering. This method operates by actively focusing light onto the target in a NLOS path using wavefront shaping. By raster scanning that focus, we can actively image the occluded object. The focus thus formed is near diffraction limited and can be substantially smaller than the object itself, thereby enabling us to perform NLOS imaging with unprecedented resolution. We demonstrate that a resolution of ∼ 0.6 mm at a distance of 0.55 m is achievable in our experiment.

Item Type:Book Section
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URLURL TypeDescription Full content is a conference presentation
Cao, Ruizhi0000-0003-3385-446X
Xu, Jian0000-0002-4743-2471
Yang, Changhuei0000-0001-8791-0354
Additional Information:© (2022) Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:PC11969
Record Number:CaltechAUTHORS:20220304-60857000
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Official Citation:Ruizhi Cao, Frederic de Goumoens, Baptiste Blochet, Jian Xu, and Changhuei Yang "Non-line-of-sight imaging via wavefront shaping", Proc. SPIE PC11969, Adaptive Optics and Wavefront Control for Biological Systems VIII, PC119690H (2 March 2022);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:113752
Deposited By: George Porter
Deposited On:07 Mar 2022 20:26
Last Modified:25 Jul 2022 23:14

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