Engineering and Technology

Metasurface-driven full-space structured light for three-dimensional imaging

G. Kim, Y. Kim, et al.

Discover the groundbreaking work by Gyeongtae Kim and colleagues on a metasurface-enhanced structured light depth-sensing platform that can project high-density dot arrays across a 180° field of view. This innovative technology promises enhanced efficiency and a host of applications, including face recognition and automotive robot vision.

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Abstract

This paper proposes a metasurface-enhanced structured light (SL) depth-sensing platform capable of scattering high-density (~10K) dot arrays over a 180° field of view (FOV). The platform utilizes subwavelength-scale light manipulation for enhanced FOV and diffraction efficiency compared to conventional methods. A proof-of-concept demonstration involving depth estimation of face masks is presented, utilizing a stereo matching algorithm. Furthermore, a high-throughput manufacturing method using nanoparticle-embedded resin (nano-PER) imprinting is demonstrated, enabling metasurface replication on various substrates. The authors suggest potential applications in face recognition and automotive robot vision.

Publisher

Nature Communications

Published On

Oct 10, 2022

Authors

Gyeongtae Kim, Yeseul Kim, Jooyeong Yun, Seong-Won Moon, Seokwoo Kim, Jaekyung Kim, Junkyeong Park, Trevon Badloe, Inki Kim, Junsuk Rho

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