License Plate Location Using SVM

Hong, Seok-Keun; Chun, Joo-Kwong; An, Myoung-Seok; Shim, Jun-Hwan; Cho, Seok-Je

Journal of Navigation and Port Research 2008;32(10):845-850.
Published online December 30, 2008.

SVM을 이용한 차량 번호판 위치 추출

홍석근, 천주광, 안명석, 심준환, 조석제

License Plate Location Using SVM

Seok-Keun Hong, Joo-Kwong Chun, Myoung-Seok An, Jun-Hwan Shim, Seok-Je Cho

Abstract

In this paper, we propose a license plate locating algorithm by using SVM. Tipically, the features regarding license plate format include height-to-width ratio, color, and spatial frequency. The method is dived into three steps which are image acquisition, detecting license plate candidate regions, verifying the license plate accurately. In the course of detecting license plate candidate regions, color filtering and edge detecting are performed to detect candidate regions, and then verify candidate region using Support Vector Machines(SVM) with DCT coefficients of candidates. It is possible to perform reliable license plate location bemuse we can protect false detection through these verification process. We validate our approach with experimental results.

Key Words: License plate location;Color filtering;Vertical edge;DCT;SVM