한국산학기술학회논문지 (Journal of the Korea Academia-Industrial cooperation Society)

  • 제11권11호
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  • Pages.4568-4575
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  • 2010
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  • 1975-4701(pISSN)
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  • 2288-4688(eISSN)
한국산학기술학회 (The Korea Academia-Industrial cooperation Society)
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Zernike 모멘트와 Wavelet을 이용한 홍채인식

A Iris Recognition Using Zernike Moment and Wavelet

  • 최창수 (충북대학교 컴퓨터공학과) ;
  • 박종천 (충북대학교 컴퓨터공학과) ;
  • 전병민 (충북대학교 컴퓨터공학과)
  • Choi, Chang-Soo (Department of Computer Engineering, Chungbuk National University) ;
  • Park, Jong-Cheon (Department of Computer Engineering, Chungbuk National University) ;
  • Jun, Byoung-Min (Department of Computer Engineering, Chungbuk National University)
  • 투고 : 2010.09.08
  • 심사 : 2010.11.19
  • 발행 : 2010.11.30
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초록

홍채인식은 홍채의 무늬 패턴 정보를 이용하는 생체인식 기술로 안정성, 보안성과 같은 특징을 가지고 있기 때문에 높은 보안을 요구하는 환경에 특히 적합하다. 최근 들어 홍채정보를 이용하여 출입통제, 정보보안등의 분야에 많이 활용되고 있다. 홍채 특징 추출시 크기, 조명, 회전에 무관한 홍채 특징을 추출하는 것이 바람직하다. 홍채크기 및 조명 문제는 전처리를 통해 쉽게 해결할 수 있지만 회전에 무관한 홍채 특징 추출은 여전히 문제가 된다. 본 논문에서는 회전 보정으로 인한 인식률 및 속도 저하를 개선하기 위해 Zernike 모멘트와 Daubechies Wavelet을 이용한 홍채인식 방법을 제안한다. 제안한 방법은 회전에 불변한 Zernike 모멘트의 통계적 특성을 이용하여 회전된 홍채에 대해서 1단계로 유사홍채를 분류함으로서 홍채인식에 필요한 시간을 단축하였고, 인식성능 역시 기존 방법과 대등함을 보였다. 따라서 제안한 방법이 대용량의 홍채 인식 시스템에 효과적인 적용이 가능함을 확인할 수 있었다.

Iris recognition is a biometric technology that uses iris pattern information, which has features of stability, security etc. Because of this reason, it is especially appropriate under certain circumstances of requiring a high security. Recently, using the iris information has a variety uses in the fields of access control and information security. In extracting the iris feature, it is desirable to extract the feature which is invariant to size, lights, rotation. We have easy solutions to the problem of iris size and lights by previous processing but there is still problem of iris feature extract invariant to rotation. In this paper, To improve an awareness ratio and decline in speed for a revision of rotation, it is proposed that the iris recognition method using Zernike Moment and Daubechies Wavelet. At first step, the proposed method groups rotated iris into similar things by statistical feature of Zernike Moment invariant to a rotation, which shortens processing time of iris recognition and looks equal to an established method in the performance of recognition too. therefore, proposed method could confirm the possibility of effective application for large scale iris recognition system.

키워드

참고문헌

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