TY  - JOUR
PY  - 2018//
TI  - Theoretical study of NIR spectral polarimetry and application to image analysis for measurement of friction coefficient of icy road surface
JO  - Transactions of Society of Automotive Engineers of Japan
A1  - Iwama, Daisuke
A1  - Kaneko, Tomomi
A1  - Kitagawa, Hiroshi
A1  - Kido, Akihiro
A1  - Naganuma, Kaname
A1  - Takezawa, Satoshi
SP  - 806
EP  - 811
VL  - 49
IS  - 4
N2  - 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, "Fresnel equations" 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>
LA  - ja
SN  - 0287-8321
UR  - http://dx.doi.org/10.11351/jsaeronbun.49.806
ID  - ref1
ER  -