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

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Embedding Binary Watermark Image using DWT Coefficients

이산 웨이블릿 변환계수를 이용한 이진 워터마크 영상

  • Park, Kwang-Chae (Electronic Engineering, Chosun University) ;
  • Bae, Ceol-Soo (Information and Communication Engineering, Catholic Kwandong University)
  • 박광채 (조선대학교 전자공학과) ;
  • 배철수 (가톨릭관동대학교 정보통신공학과)
  • Received : 2014.09.25
  • Accepted : 2014.10.10
  • Published : 2014.10.31
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Abstract

Multimedia documents can be transferred quickly and easily across the Internet, and has attracted considerable interest in multimedia security and multimedia copyright protection. This paper proposes an animage watermarking scheme embedding a binary watermark image using Discrete Wavelet Transform (DWT) coefficients. The original image is transformed to the wavelet domain and decomposed in subbands. The binary watermark image, as a sequence of bits, is embedded into the middle frequency subbands. The original image is not needed to detect the watermark image. The proposed method detected fewer watermark bits but produced an approximately 10dB higher PSNR than the max/min method.

멀티미디어 자료들은 인터넷을 통해 빠르고 쉽게 전송된다. 이것은 멀티미디어 보안 및 저작권 보호에 있어 넓은 관심을 불러일으킬 수 있다. 이에 본 논문에서는 저작권 보호를 위해 이산 웨이블릿 변환 계수를 사용하여 이진 워터마크 이미지를 포함하는 이미지 워터마킹 기법을 제안한다. 원본 이미지를 웨이블릿 영역으로 변환하고 서브 대역으로 나눠진다. 변환된 영상은 이진워터마크 영상은 비트 시퀀스로 중잔 주파수 서브 밴드에 삽입된다. 원본 이미지는 워터마크 영상의 검출에 필요로 하지 않는다. 제안된 방법에서 워터마크 비트수는 적게 검출되지만 최대/최소값 보다 10dB의 PSNR이 더 생산되었다.

Keywords

References

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