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水印的嵌入和提取方法
谭铁牛; 董晶; 王再冉
2012-11-06
Date Available2013-01-23
CountryCN
Subtype发明
Abstract一种嵌入水印的方法,包括步骤:对待保护图像进行小波分解,将低频小波系数分成互不重叠的块;对每块进行奇异值分解;随机选择两个满足条件的图像块组成块对;通过修改块对的最大奇异值以嵌入水印;对每个子块进行奇异值逆分解,然后,对小波系数进行小波重构。本发明将水印嵌入在图像最稳定的部分,从而使水印的鲁棒性得到增强。通过限定两个图像块间的归一化距离以选择图像块对进行水印嵌入,减小了图像的修改量,从而保证嵌入水印后图像的透明性。
Patent NumberCN201210440037.7
Status授权
Document Type专利
Identifierhttp://ir.ia.ac.cn/handle/173211/8735
Collection智能感知与计算研究中心
Affiliation中国科学院自动化研究所
Recommended Citation
GB/T 7714
谭铁牛,董晶,王再冉. 水印的嵌入和提取方法. CN201210440037.7[P]. 2012-11-06.
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