| 基于范数与范数均值比较的印刷防伪水印算法 |
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| 引用本文： | 叶天语.基于范数与范数均值比较的印刷防伪水印算法[J].光电工程,2011,38(6):126-133. |
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| 作者姓名： | 叶天语 |
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| 作者单位： | 浙江工商大学信息与电子工程学院,杭州,310018 |
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| 摘 要： | 现有印刷防伪水印算法在原始图像中嵌入水印,其不可见性有待改进,而且缺乏对抵抗二次打印-扫描的研究.针对这些问题,本文利用范数与范数均值比较提出一种印刷品防伪水印算法.算法对原始图像进行离散小波变换,将小波低频逼近子带分割成互不重叠的子块,对每个子块进行奇异值分解,判断各个子块的奇异值矩阵范数与所有子块奇异值矩阵范数的均...
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| 关 键 词： | 数字水印 印刷品防伪 零水印 范数 打印-扫描 |
A Watermarking Algorithm for Print Forgery Prevention Based on Comparison between Norm and Mean of Norm |
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| YE Tian-yu.A Watermarking Algorithm for Print Forgery Prevention Based on Comparison between Norm and Mean of Norm[J].Opto-Electronic Engineering,2011,38(6):126-133. |
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| Authors: | YE Tian-yu |
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| Affiliation: | YE Tian-yu(College of Information & Electronic Engineering,Zhejiang Gongshang University,Hangzhou 310018,China) |
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| Abstract: | At present,those existing watermarking algorithms for print forgery prevention always embed watermarks into original images,and their invisibility needed to be improved.Moreover,they had never studied their robustness against dual print-and-scan process.A watermarking algorithm for print forgery prevention was proposed to overcome those problems based on the comparison of numerical relationship between norm and mean of norm.It conducted discreet wavelet transformation on the original image,split its low fre... |
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| Keywords: | digital watermarking print forgery prevention zero-watermarking norm print-and-scan process |
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