한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)

  • 제34권4C호
  • /
  • Pages.380-387
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  • 2009
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

집적영상 및 랜덤 픽셀-스크램블링 기법을 이용한 새로운 광 영상 암호화

Novel Optical Image Encryption using Integral Unaging and Random Pixel-scrambling Schemes

  • 박영일 (광운대학교 차세대 3D 디스플레이 연구센터) ;
  • 김석태 (부경대학교 전자컴퓨터정보통신공학부) ;
  • 김은수 (광운대학교 차세대 3D 디스플레이 연구센터)
  • 발행 : 2009.04.30
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 집적영상(integral imaging) 및 랜덤 픽셀-스크램블링(random pixel-scrambling) 기법을 이용한 새로운 광 영상 암호화(optical image encryption) 방법을 제안하였다. 즉, 제안된 방법의 부호화 과정에서는 먼저 입력영상을 여러 개의 작은 크기의 블록으로 나누어 픽셀-스크램블링을 한 다음 집적 영상 기술을 이용하여 요소영상(elemental image)을 생성하고 이 영상의 안정성을 위하여 2차 픽셀-스크램블링을 수행하여 최종 암호화된 영상을 얻게 된다. 그리고 복호화 과정에서는 암호화된 영상에 광학적인 집적 영상 복원 기법과 역 픽셀-스크램블링 방법을 사용하여 최종적으로 원 영상을 복원하게 된다. 새로이 제안된 광 영상 암호화 기법의 잡음 첨가 및 크로핑과 같은 데이터 손실에 대한 강인성을 실험을 통해 분석하고 그 결과를 제시하였다.

In this paper, optical image encryption using integral imaging and pixel-scrambling technologies is proposed. In the encryption process, we use pixel scrambling to change the order of subsections into which the cover image is divided, and the utilize the integral imaging scheme to obtain the elemental image from the scrambled image. In order to achieve higher security, we reuse pixel scrambling to the elemental image. In the decryption process, we employ optical integral imaging reconstruction technique and inverse pixel scrambling methode. Computer simulation results prove the feasibility of the proposed method and robustness against data loss and noise.

키워드

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