hrcak mascot   Srce   HID

Izvorni znanstveni članak
https://doi.org/https://doi.org/10.1080/00051144.2020.1715582

Overcoming spatio-angular trade-off in light field acquisition using compressive sensing

Nicol Dlab ; Department of Electronic Systems and Information Processing, University of Zagreb Faculty of Electrical Engineering and Computing, Zagreb, Croatia
Filip Cimermančić ; Department of Electronic Systems and Information Processing, University of Zagreb Faculty of Electrical Engineering and Computing, Zagreb, Croatia
Ivan Ralašić ; Department of Electronic Systems and Information Processing, University of Zagreb Faculty of Electrical Engineering and Computing, Zagreb, Croatia
Damir Seršić ; Department of Electronic Systems and Information Processing, University of Zagreb Faculty of Electrical Engineering and Computing, Zagreb, Croatia

Puni tekst: engleski, pdf (3 MB) str. 250-259 preuzimanja: 11* citiraj
APA 6th Edition
Dlab, N., Cimermančić, F., Ralašić, I. i Seršić, D. (2020). Overcoming spatio-angular trade-off in light field acquisition using compressive sensing. Automatika, 61 (2), 250-259. Preuzeto s https://hrcak.srce.hr/239868
MLA 8th Edition
Dlab, Nicol, et al. "Overcoming spatio-angular trade-off in light field acquisition using compressive sensing." Automatika, vol. 61, br. 2, 2020, str. 250-259. https://hrcak.srce.hr/239868. Citirano 07.08.2020.
Chicago 17th Edition
Dlab, Nicol, Filip Cimermančić, Ivan Ralašić i Damir Seršić. "Overcoming spatio-angular trade-off in light field acquisition using compressive sensing." Automatika 61, br. 2 (2020): 250-259. https://hrcak.srce.hr/239868
Harvard
Dlab, N., et al. (2020). 'Overcoming spatio-angular trade-off in light field acquisition using compressive sensing', Automatika, 61(2), str. 250-259. Preuzeto s: https://hrcak.srce.hr/239868 (Datum pristupa: 07.08.2020.)
Vancouver
Dlab N, Cimermančić F, Ralašić I, Seršić D. Overcoming spatio-angular trade-off in light field acquisition using compressive sensing. Automatika [Internet]. 2020 [pristupljeno 07.08.2020.];61(2):250-259. Dostupno na: https://hrcak.srce.hr/239868
IEEE
N. Dlab, F. Cimermančić, I. Ralašić i D. Seršić, "Overcoming spatio-angular trade-off in light field acquisition using compressive sensing", Automatika, vol.61, br. 2, str. 250-259, 2020. [Online]. Dostupno na: https://hrcak.srce.hr/239868. [Citirano: 07.08.2020.]

Sažetak
In contrast to conventional cameras which capture a 2D projection of a 3D scene by integrating the angular domain, light field cameras preserve the angular information of individual light rays by capturing a 4D light field of a scene. On the one hand, light field photography enables powerful post-capture capabilities such as refocusing, virtual aperture, depth sensing and perspective shift. On the other hand, it has several drawbacks, namely, high-dimensionality of the captured light fields and a fundamental trade-off between spatial and angular resolution in the camera design. In this paper, we propose a compressive sensing approach to light field acquisition from a sub-Nyquist number of samples. Using an off-the-shelf measurement setup consisting of a digital projector and a Lytro Illum light field camera, we demonstrate the efficiency of the compressive sensing approach by improving the spatial resolution of the acquired light field. This paper presents a proof of concept with a simplified 3D scene as the scene of interest. Results obtained by the proposed method show significant improvement in the spatial resolution of the light field as well as preserved post-capture capabilities.

Ključne riječi
Compressive sensing (CS); light field; camera; projector; measurement setup; sparse optimization

Hrčak ID: 239868

URI
https://hrcak.srce.hr/239868

Posjeta: 26 *