【摘要】 该文结合密码学和数字水印技术,提出了一种新的不修改图像内容的鲁棒性水印算法。该算法不仅对有损压缩,噪声攻击具有较好的鲁棒性,而且可以抵抗共谋攻击和多水印攻击。与Lee[1]的算法相比,它特别对剪切攻击具有较好的鲁棒性,而且计算速度快。更多还原

【Abstract】 The cryptographic tools are introduced to watermarking in this paper,in such a way that both the advantages of cryptographic tools and digital watermarking are available.Based on this idea,a high robust watermarking algorithm without modifying the host image is proposed.The proposed algorithm has high robustness against noising,loss compression,and even collusion and multiple watermarking attacks.Comparing it with Lee’s method,the proposed method especially has higher robustness against cropping attack.Moreover,its speed of computation is very rapid.更多还原