Seeing around corners with edge-resolved transient imaging

Author:

Rapp JoshuaORCID,Saunders Charles,Tachella JuliánORCID,Murray-Bruce John,Altmann YoannORCID,Tourneret Jean-Yves,McLaughlin StephenORCID,Dawson Robin M. A.ORCID,Wong Franco N. C.,Goyal Vivek K.ORCID

Abstract

AbstractNon-line-of-sight (NLOS) imaging is a rapidly growing field seeking to form images of objects outside the field of view, with potential applications in autonomous navigation, reconnaissance, and even medical imaging. The critical challenge of NLOS imaging is that diffuse reflections scatter light in all directions, resulting in weak signals and a loss of directional information. To address this problem, we propose a method for seeing around corners that derives angular resolution from vertical edges and longitudinal resolution from the temporal response to a pulsed light source. We introduce an acquisition strategy, scene response model, and reconstruction algorithm that enable the formation of 2.5-dimensional representations—a plan view plus heights—and a 180 field of view for large-scale scenes. Our experiments demonstrate accurate reconstructions of hidden rooms up to 3 meters in each dimension despite a small scan aperture (1.5-centimeter radius) and only 45 measurement locations.

Funder

United States Department of Defense | Defense Advanced Research Projects Agency

Charles Stark Draper Laboratory

National Science Foundation

Royal Academy of Engineering

RCUK | Engineering and Physical Sciences Research Council

MOD University Defence Research Collaboration (UDRC) in Signal Processing

Publisher

Springer Science and Business Media LLC

Subject

General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry

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