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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Transmission Methods Using RS Codes to Improve Spatial Relationship of Images in Reversible Data Hiding Systems

가역적 데이터 은닉 시스템에서 RS 부호를 사용한 이미지 공간상관 관계 향상을 위한 전송 기법

  • Kim, Taesoo (School of Electrical Engineering, University of Ulsan) ;
  • Jang, Min-Ho (School of Electrical and Electronic Engineering, Ulsan College) ;
  • Kim, Sunghwan (School of Electrical Engineering, University of Ulsan)
  • Received : 2015.06.12
  • Accepted : 2015.07.23
  • Published : 2015.08.31
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Abstract

In this paper, a novel reversible data hiding by using Reed-Solomon (RS) code is proposed for efficient transmission in encryption image. To increase the recovery of data from encrypted image, RS codes are used to encode messages, and then the codewords can be embedded into encrypted image according to encryption key. After receiving encrypted image which embeds the codewords, the receiver firstly decryptes the encrypted image using the encryption key and get metric about codewords containing messages. According to recovery capability of RS codes, better estimation of message is done in data hiding system. Simulation results about two images and two RS codes show that the performances of the proposed schemes are better than ones of the reference scheme.

본 논문에서는 효율적인 데이터 전송을 위해 Reed-Solomon(RS) 부호를 활용하여 암호화된 이미지에 정보를 전송하는 새로운 가역적 데이터 은닉 기술을 제안한다. 암호화된 이미지로부터 데이터의 복구 시 발생하는 오류를 줄이기 위해 메시지를 RS 부호의 부호어를 생성 후 데이터 은닉키를 활용하여 암호화된 이미지에 반영한다. 수신자는 부호어가 포함된 암호화 이미지를 수신하고 먼저 암호화된 이미지를 암호화에 따라 이미지를 해독하고, 공간 상간관계를 이용하여 데이터를 추출한다. 이 추출한 데이터로부터 RS 부호의 정보를 계산하여 RS 복호기를 통해 메시지를 추정한다. 두 개 이미지와 RS 부호에 대한 모의실험 결과는 제안한 구조의 성능이 비트 오류 비율 측면에서 성능 향상을 보여준다.

Keywords

References

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