Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2002.06d
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- Pages.85-88
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- 2002
Digital Watermark Algorithm Based on Energy Distribution of Subband Tree Structure in Wavelet Domain
웨이블릿 영역에서 부대역간 트리구조의 에너지 분포에 의한 디지털 워터마크 삽입 알고리즘
Abstract
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).
Keywords