基于Zernike不变矩的零水印算法  

Zero watermarking algorithm based on Zernike moments

作　　者：王忠[1] 孙钰[1] 

机构地区：[1]武汉工程大学计算机科学与工程学院,武汉430073

出　　处：《计算机应用》2008年第9期2233-2235,共3页journal of Computer Applications

摘　　要：为了实施图像的版权保护,提出了一种基于Zern ike不变矩的零水印算法。利用Zern ike矩幅度的旋转不变性提取图像特征点,将特征点通过设定的阈值量化为二值序列作为零水印保存到零水印信息库(IPR)。证明版权利用Zern ike矩提取待检测图像特征点,以同样的阈值量化为二值水印序列与零水印作相关性检测。实验结果表明,该方法很好地解决了传统水印鲁棒性和不可感知性的矛盾问题,对常用的图像处理和几何攻击具有较好的鲁棒性。In order to implement the picture copyright protection, this article proposed a zero watermarking algorithmbased on the Zernike moments. The rectangular revolves invariability of Zernike moments was used to withdraw picture characteristic point, and quantified it for the binary sequence as the zero watermarking. The other image used the same method to extract its feature and quantify for the binary sequence. Then comparison to zero watermarking was made to proof the copyright. The result indicated this method is very good to solute the contradictory question of robustness and imperceptibility.

关 键 词：ZEMIKE矩 零水印 鲁棒性 不可见性 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]