Vehicle Identification Number Recognition using Edge Projection and PCA

에지 투영과 PCA를 이용한 차대 번호 인식

  • 안인모 (마산대학 로봇자동화과) ;
  • 하종은 (서울과학기술대학교 자동차공학과)
  • Received : 2010.08.12
  • Accepted : 2011.03.11
  • Published : 2011.05.01


The automation of production process is actively expanding for the purpose of the cost reduction and quality assurance. Among these, automatic tracking of the product along the whole process of the production is also important topic. Typically this is done by adopting OCR technology. Conventional OCR technology operates well on the rather good quality of the image like as printed characters on the paper. In industrial application, IDs are marked on the metal surface, and this cause the height difference between background material and character. Illumination systems that guarantee an image with good quality may be a solution, but it is rather difficult to design such an illumination system. This paper proposes an algorithm for the recognition of vehicle's ID characters using edge projection and PCA (Principal Component Analysis). Proposed algorithm robustly operates under illumination change using the same parameters. Experimental results show the feasibility of the proposed algorithm.


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