对于数字水印的研究越来越成为人们研究的重点，本问针对敏感的水印水印技术，提出了一种改进的算法 -The Digital Watermarking increasingly become the focus of research, this question watermark watermarking technology for sensitive, a modified algorithm

The geometrical attacks are still a problem for many digital watermarking algorithms at present. In this paper, we propose a watermarking algorithm for color images resistant to geometrical distortions (rotation and scaling). The singular value dec

This paper proposes new watermarking technique based on tetrolet domain. The tetrolet transform is a new adaptive Haar-type wavelet transform based on tetrominoes. It avoids Gibbs oscillation because it applies the Haar function at the edge o

Watermark-image usin lsb algorithm