Digital Lane Marking for Geo-Information Dissemination

Roadway lane marking detection is essential for lane departure warning and enabling autonomous vehicles. Instead of using lane markings only as visual aids to indicate the boundary of two adjacent lanes, it is possible to also include digital information in the lane to provide geographically specific information. This enables in-tunnel navigation data, location-specific service advertisement, construction zone and lane merger warning. Technologically, such digital information should be decodeable by inexpensive equipment, even while vehicle is traveling at highway speed. We propose a Differential Orthogonal Encoding scheme that allows information to be decoded even when the captured image of lane marking suffers from a high level of motion blur, and we show the superiority of the encoding scheme through physical experiment and theoretical analysis. A vehicle equipped with IMP/cm**2 camera traveling at 30m/s (108km/h) can decode lane marking with data density of 77kb/m**2. ITS World Congress 2010 This work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for nonprofit educational and research purposes provided that all such whole or partial copies include the following: a notice that such copying is by permission of Mitsubishi Electric Research Laboratories, Inc.; an acknowledgment of the authors and individual contributions to the work; and all applicable portions of the copyright notice. Copying, reproduction, or republishing for any other purpose shall require a license with payment of fee to Mitsubishi Electric Research Laboratories, Inc. All rights reserved. Copyright c ©Mitsubishi Electric Research Laboratories, Inc., 2010 201 Broadway, Cambridge, Massachusetts 02139