Journal of Digital Contents Society (디지털콘텐츠학회 논문지)

Digital Contents Society (한국디지털콘텐츠학회)
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Reversible Watermarking for Audio Using Recompression Method

재압축 기술을 이용한 오디오 파일에서의 가역 정보은닉

  • 황호영 (고려대학교 정보보호대학원) ;
  • 김형중 (고려대학교 정보보호대학원)
  • Received : 2013.05.20
  • Accepted : 2013.06.19
  • Published : 2013.06.30
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Abstract

Various methods of data compression have been developed to handle data within limited storage capacity and limited transmission speed. Recompression technology, a technology most recent among them, is a technology that can embed data regardless of the information entropy of a data. Recompression technology separates original multimedia data in to blocks and embeds 0 or 1 according to whether each block is flipped or not. In this paper, this technology has been applied on audio files. And was able to implement reversible watermarking for audio files.

데이터를 한정된 양의 저장 공간 및 한정된 속도의 전송매체에서 다루기 위하여 여러 가지 데이터압축 방식이 개발되었다. 그 중 가장 최근에 개발된 기술인 재압축 기술은 대부분의 다른 압축방식과는 달리 데이터의 정보 엔트로피와는 무관하게 추가적인 정보 삽입이 가능하다. 재압축 기술은 원래의 멀티미디어 데이터를 블럭 단위로 나누어 각 블록의 반전 여부에 따라 0 또는 1을 삽입하는 기술이다. 본 논문에서는 제안한 재압축 기술을 오디오 파일에 적용시켰고, 이를 통하여 가역 정보은닉 방식을 구현하였다.

Keywords

References

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