000136056 001__ 136056 000136056 005__ 20240731103324.0 000136056 0247_ $$2doi$$a10.1109/ICASSP49357.2023.10094929 000136056 0248_ $$2sideral$$a134978 000136056 037__ $$aART-2023-134978 000136056 041__ $$aeng 000136056 100__ $$0(orcid)0000-0002-5778-1819$$aLuesia-Lahoz, Pablo$$uUniversidad de Zaragoza 000136056 245__ $$aZone Plate Virtual Lenses for Memory-Constrained NLOS Imaging 000136056 260__ $$c2023 000136056 5060_ $$aAccess copy available to the general public$$fUnrestricted 000136056 5203_ $$aThe 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. 000136056 536__ $$9info:eu-repo/grantAgreement/ES/DGA/LMP30-21$$9info:eu-repo/grantAgreement/EC/HORIZON EUROPE/101135156/EU/European iNitiative for Low cost, Innovative and Green High Thrust ENgine - Engine Demonstration/ENLIGHTEN$$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-105004GB-I00 000136056 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000136056 592__ $$a1.05$$b2023 000136056 593__ $$aElectrical and Electronic Engineering$$c2023 000136056 593__ $$aSoftware$$c2023 000136056 593__ $$aSignal Processing$$c2023 000136056 594__ $$a6.3$$b2023 000136056 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000136056 700__ $$0(orcid)0000-0002-7503-7022$$aGutiérrez, Diego$$uUniversidad de Zaragoza 000136056 700__ $$0(orcid)0000-0002-8160-7159$$aMuñoz, Adolfo$$uUniversidad de Zaragoza 000136056 7102_ $$15007$$2570$$aUniversidad de Zaragoza$$bDpto. Informát.Ingenie.Sistms.$$cÁrea Lenguajes y Sistemas Inf. 000136056 773__ $$g2023 (2023), [5 pp.]$$tProceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing$$x0736-7791 000136056 8564_ $$s1490377$$uhttps://zaguan.unizar.es/record/136056/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2025-05-05 000136056 8564_ $$s2667719$$uhttps://zaguan.unizar.es/record/136056/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2025-05-05 000136056 909CO $$ooai:zaguan.unizar.es:136056$$particulos$$pdriver 000136056 951__ $$a2024-07-31-09:43:55 000136056 980__ $$aARTICLE