互联网 qkzz.net
全刊杂志网:首页 > 女性 > 文章正文
刊社推荐

图像归一化与伪Zernike矩的鲁棒水印算法研究苗锡奎 孙劲光 张语涵


摘 要:以基于矩的图像归一化技术及伪Zernike矩相关知识为基础,提出一种可有效抵抗几何攻击的数字水印新算法。算法首先利用归一化技术将原始图像映射到几何不变空间内;然后结合不变质心理论提取出归一化图像的重要区域;最后通过量化调制伪Zernike矩幅值将水印嵌入到重要区域中。仿真实验表明,该算法不仅具有较好的透明性,而且对常规信号处理(滤波、锐化、加噪和JPEG压缩等)和几何攻击(全局仿射变换、局部失真等)均具有较好的鲁棒性。
  关键词:数字水印; 几何攻击; 图像归一化; 重要区域; 伪Zernike矩
  中图分类号:TP391 文献标志码:A
  文章编号:1001-3695(2010)03-1052-03
  doi:10.3969/j.issn.1001-3695.2010.03.068
  
  Robust watermarking scheme based on image normalization and pseudo-Zernike moments
  
  MIAO Xi-kui, SUN Jin-guang, ZHANG Yu-han
  
  (School of Electronics & Information Engineering, Liaoning Technical University, Huludao Liaoning125105, China)
  
  Abstract:This paper proposed a new image watermarking scheme robust to geometric attacks based on image normalization and pseudo-Zernike moments.Firstly,constructed the geometrically invariant space by using image normalization.Then,obtained a significant region from the normalized image by utilizing the invariant centroid theory.Finally, embedded the watermark into the significant region by quantizing the magnitudes of the pseudo-Zernike moments. Experimental results show that the scheme is not only invisible and robust against common signals processing such as median filtering,sharpening,noise adding, JPEG compression,etc, but also robust against the geometric attacks such as affine transform,local geometric distortion, etc. ......
很抱歉,暂无全文,若需要阅读全文或喜欢本刊物请联系《计算机应用研究》杂志社购买。
欢迎作者提供全文,请点击编辑
分享:
 

了解更多资讯,请关注“木兰百花园”
分享:
 
精彩图文


关键字
支持中国杂志产业发展,请购买、订阅纸质杂志,欢迎杂志社提供过刊、样刊及电子版。
关于我们 | 网站声明 | 刊社管理 | 网站地图 | 联系方式 | 中图分类法 | RSS 2.0订阅 | IP查询
全刊杂志赏析网 2017