Rectangular traffic sign recognition

Authors:
Roberto Ballerini;Luigi Cinque;Luca Lombardi;Roberto Marmo
Affiliations:
Dipartimento di Informatica e Sistemistica, University of Pavia, Pavia, Italy;Dipartimento di Informatica ”La Sapienza”, University of Roma, Italy;Dipartimento di Informatica e Sistemistica, University of Pavia, Pavia, Italy;Dipartimento di Informatica e Sistemistica, University of Pavia, Pavia, Italy
Venue:
ICIAP'05 Proceedings of the 13th international conference on Image Analysis and Processing
Year:
2005

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Abstract

In this research the problem of the automatic detection and classification of rectangular road sign has been faced. The first step concerns the robust identification of the rectangular sign, through the search of gray level discontinuity on the image and Hough transform. Due to variety of rectangular road signs, we first recognize the guide sign and then we consider advertising the other rectangular signs. The classification is based on analysis of surface color and arrows direction of the sign. We have faced different problems, primarily: shape alterations of the sign owed to the perspective, shades, different light conditions, occlusion. The obtained results show the feasibility of the system.