摘要
以改进的伪Zernike矩相关知识为基础,提出了一种改进的抗几何攻击的数字水印算法。该算法首先计算载体图像的伪Zernike矩,然后对其进行归一化处理。最后选择部分低阶矩幅值量化嵌入水印。实验结果表明该数字水印算法不仅可以抵抗常规的数字信号处理,而且较基于伪Zernike矩的抗几何攻击的数字水印算法有对旋转和缩放的联合攻击具有较好的抵抗能力。
An anti-geometric attacks image watermarking scheme is proposed based on normalization of pseudo-Zemike moment.Firstly, the pseudo-Zernike moments of the host image are computed.Secondly, the result is normalized.At last, the digital watermark is embedded into the host image by quantizing some low-lever moments.Experimental results show this scheme is not only robust against common signals processing,but also robust against the rotation and scaling of united attack.
出处
《计算机工程与应用》
CSCD
北大核心
2010年第33期185-186,200,共3页
Computer Engineering and Applications
基金
辽宁省高校重点实验室基金(No.2008s115)
