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http://dx.doi.org/10.5392/JKCA.2012.12.03.009

Vehicle License Plate Recognition System By Edge-based Segment Image Generation  

Kim, Jin-Ho (경일대학교 전자공학과)
Noh, Duck-Soo (경일대학교 전자공학과)
Publication Information
The Journal of the Korea Contents Association / v.12, no.3, 2012 , pp. 9-16 More about this Journal
Abstract
The research of vehicle license plate recognition has been widely studied for the smart city project. The license plate recognition can be hard due to the geometric distortion and the image quality degradation in case of capturing the driving car image at CCTV without trigger signal on the road. In this paper, the high performance vehicle license plate recognition system using edge-based segment image is introduced which is robust in the geometric distortion and the image quality degradation according to non-trigger signal. The experimental results of the proposed real time license plate recognition algorithm which is implemented at the CCTV on the road show that the plate detection rate was 97.5% and the overall character recognition rate of the detected plates was 99.3% in a day average 1,535 vehicles for a week operation.
Keywords
CCTV Surveillance; Plate Detection; Plate Recognition; LPR; Image Enhancement;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 M. Ko, "Effective license plate character recognition based on geometric invariant features," Ph. D. dissertation, Kyungpook National University, 2004.
2 강민경,"자동차 번호판 영상의 왜곡 보정기법", 충남대학교 석사학위논문, 2008.
3 F. Shafait, D. Keysers, and T. M. Breuel, "Efficient implementation of local adaptive thresholding techniques using integral images," SPIE DRR'08, San Jose, CA, USA. 2008(1).
4 염희정, 은성종, 황보택근, "휴대단말기 영상에서의 기하학적 정보를 이용한 차량 번호판 인식", 한국콘텐츠학회논문지, 제10권, 제10호, pp.1-8, 2010.
5 김진호, "왜곡불변 차량 번호판 검출 및 인식 알고리즘", 한국콘텐츠학회논문지, 제11권, 제3호, pp.1-8, 2011.
6 http://www.flong.com/texts/code/shapers_exp
7 S. E. Umbaugh, "Computer vision and image processing," Prentice Hall PTR, pp.188-195, 1999.
8 문성원, 장언동, 송영준, "기울어진 차량 번호판 영역의 검출", 한국콘텐츠학회논문지, 제4권, 제3 호, pp.125-130, 2004.