한국산업정보학회논문지 (Journal of Korea Society of Industrial Information Systems)

한국산업정보학회 (Korea Society of Industrial Information Systems)
권호 표지

다중 픽셀 차이값과 LSB 교체 기법을 이용한 이미지 스테가노그래픽 기법 연구

A Study on the Image Steganographic method using Multi-pixel Differencing and LSB Substitution Methods

  • 하경주 (대구한의대학교 모바일콘텐츠학부) ;
  • 정기현 (영진전문대학 컴퓨터정보계열) ;
  • 유기영 (경북대학교 공과대학 전자공학과)
  • Ha, Kyeoung-Ju (Faculty of Mobile Contents, Daegu Hanny University) ;
  • Jung, Ki-Hyun (Division of Computer Informatioin, Yeungjin College) ;
  • Yoo, Kee-Young (Department of Computer Engineering, Kyungpook National University)
  • 발행 : 2008.09.30
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초록

A data hiding method based on least significant bit (LSB) substitution and multi-pixel differencing (MPD) is presented on the proposed method to improve the capacity of the hidden secret data and to provide an imperceptible visual quality. First, a sum of different values for four-pixel sub-block is calculated. The low value of the sum can be located on a smooth block and the high value is located on an edged block. The secret data are hidden into the cover image by LSB method in the smooth block, while MPD method in the edged block. The experimental results show that the proposed method has a higher capacity and maintains a good visual quality.

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