Zone Plate Virtual Lenses for Memory-Constrained NLOS Imaging

Luesia-Lahoz, Pablo (Universidad de Zaragoza) ; Gutiérrez, Diego (Universidad de Zaragoza) ; Muñoz, Adolfo (Universidad de Zaragoza)

Resumen: The recently introduced Phasor Fields framework for non-line-of-sight imaging allows to image hidden scenes by treating a relay surface as a virtual camera. It formulates the problem as a diffractive wave propagation, solved by the Rayleigh–Sommerfeld diffraction (RSD) integral. Efficient Phasor Fields implementations employ RSD-based kernels to propagate waves from parallel planes by means of 2D convolutions. However, the kernel storage requisites are prohibitive, hampering the integration of these techniques in memory-constrained devices and applications like car safety. Instead of relying on expensive RSD kernels, we propose the use of alternative virtual lenses to focus on the incomeing phasor field and image hidden scenes. In particular, we propose using zone plates (ZP), which require significant less memory. As our results show, our ZP virtual lenses allow us to obtain reasonable reconstructions of the hidden scene, offering an attractive trade-off for memory-constrained devices.

Idioma: Inglés

DOI: 10.1109/ICASSP49357.2023.10094929

Año: 2023

Publicado en: Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing 2023 (2023), [5 pp.]
ISSN: 0736-7791

Factor impacto CITESCORE: 6.3 - Electrical and Electronic Engineering (Q1) - Signal Processing (Q2) - Software (Q2)

Factor impacto SCIMAGO: 1.05 - Electrical and Electronic Engineering - Software - Signal Processing

Financiación: info:eu-repo/grantAgreement/ES/DGA/LMP30-21
Financiación: info:eu-repo/grantAgreement/EC/HORIZON EUROPE/101135156/EU/European iNitiative for Low cost, Innovative and Green High Thrust ENgine - Engine Demonstration/ENLIGHTEN
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-105004GB-I00

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Lenguajes y Sistemas Inf. (Dpto. Informát.Ingenie.Sistms.)