Polarized Non-Line-of-Sight Imaging
Kenichiro Tanaka, Yasuhiro Mukaigawa, Achuta Kadambi
Abstract
This paper presents a method of passive non-line-of-sight (NLOS) imaging using polarization cues. A key observation is that the oblique light has a different polarimetric signal. It turns out this effect is due to the polarization axis rotation, a phenomena which can be used to better condition the light transport matrix for non-line-of-sight imaging. Our analysis and results show that the use of a polarization for NLOS is both a standalone technique, as well as an enhancement technique to boost the results of other forms of passive NLOS imaging. We make a surprising finding that, despite 50% light attenuation from polarization optics, the gains from polarized NLOS are overall superior to unpolarized NLOS.
BibTeX
@inproceedings{cvpr2020_polarizednonline,
title = {Polarized Non-Line-of-Sight Imaging},
author = {Kenichiro Tanaka and Yasuhiro Mukaigawa and Achuta Kadambi},
booktitle = {CVPR 2020},
year = {2020}
}