웨이블릿 영역에서 부대역간 트리구조의 에너지 분포에 의한 디지털 워터마크 삽입 알고리즘

Digital Watermark Algorithm Based on Energy Distribution of Subband Tree Structure in Wavelet Domain

  • 서영호 (광운대학교 전자재료공학과) ;
  • 최순영 (광운대학교 전자재료공학과) ;
  • 박진영 (광운대학교 전자재료공학과) ;
  • 김동욱 (광운대학교 전자재료공학과)
  • 발행 : 2002.06.01

초록

In this paper, the proposed watermark algorithm is based on energy distribution of the subband coefficients in the frequency domain and edge of the original image in the spacial domain. Out of these information, the KeyMap which decides the embedded position of watermark is produced. And then the binary watermark is embedded into the wavelet coefficient of LL3 subband using KeyMap and LFSR(Linear Feedback Shift Register).

키워드