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

에지기반 세그먼트 영상 생성에 의한 차량 번호판 인식 시스템

  • 김진호 (경일대학교 전자공학과) ;
  • 노덕수 (경일대학교 전자공학과)
  • Received : 2012.01.20
  • Accepted : 2012.02.22
  • Published : 2012.03.28


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.


CCTV Surveillance;Plate Detection;Plate Recognition;LPR;Image Enhancement


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