Low-Cost Imaging Photometer and Calibration Method for Road Tunnel Lighting

Author

Cattini, Stefano ; Rovati, Luigi

Author_Institution

Dept. of Inf. Eng., Univ. of Modena & Reggio Emilia, Modena, Italy

Volume

61

Issue

5

fYear

2012

fDate

5/1/2012 12:00:00 AM

Firstpage

1181

Lastpage

1192

Abstract

A camera-based measuring instrument for road tunnels lighting is proposed. The system is aimed at estimating the veiling luminance as it will be perceived by a driver approaching the tunnel, thus allowing the estimation of the optimum luminance level of tunnel entrances, hence increasing the driver´s safety. The proposed measuring instrument and the relative calibration method are based on a low-cost commercial grade camera and a reference standard, respectively.

Keywords

brightness; calibration; cameras; image sensors; lighting; photometers; tunnels; calibration method; camera-based measuring instrument; driver safety; low-cost commercial grade camera; low-cost imaging photometer; optimum luminance level estimation; road tunnel lighting; tunnel entrance; veiling luminance estimation; Calibration; Cameras; Charge coupled devices; Estimation; Lighting; Measurement uncertainty; Optical imaging; Calibration; image sensors; lighting; lighting control; optical variables measurement; photometry; road transportation;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2011.2180966

Filename

6151138