@article{ref1,
title="Theoretical study of NIR spectral polarimetry and application to image analysis for measurement of friction coefficient of icy road surface",
journal="Transactions of Society of Automotive Engineers of Japan",
year="2018",
author="Iwama, Daisuke and Kaneko, Tomomi and Kitagawa, Hiroshi and Kido, Akihiro and Naganuma, Kaname and Takezawa, Satoshi",
volume="49",
number="4",
pages="806-811",
abstract="NIR spectroscopic method was applied for road surfaces in winter and the feasibility of real-time detection for the friction coefficient was reported on the previous study. In this paper, a real-time two-dimensional measurement method, polarized spectroscopic analysis, with an image from conventional CCD camera ready on board in current vehicle was tested. First of this study, methodology of spectral polarization measuring, &quot;Fresnel equations&quot; were applied and build the theoretical formulas for the tested road conditions. Furthermore, by the experimental analysis, the possibility to distinguish road conditions and estimate a road surface friction coefficient at vehicle forward are observed.<p /><p>Language: ja</p>",
language="ja",
issn="0287-8321",
doi="10.11351/jsaeronbun.49.806",
url="http://dx.doi.org/10.11351/jsaeronbun.49.806"
}