[1]张伟龙,冯桂,韩霜.校正几何失真和像素失真的印刷数字水印算法[J].华侨大学学报(自然科学版),2011,32(4):397-400.[doi:10.11830/ISSN.1000-5013.2011.04.0397]
 ZHANG Wei-long,FENG gui,HAN Shuang.Printed Digital Watermarking Algorithm Corrects Geometric Distortion and Pixel Distortion[J].Journal of Huaqiao University(Natural Science),2011,32(4):397-400.[doi:10.11830/ISSN.1000-5013.2011.04.0397]
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校正几何失真和像素失真的印刷数字水印算法()
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《华侨大学学报(自然科学版)》[ISSN:1000-5013/CN:35-1079/N]

卷:
第32卷
期数:
2011年第4期
页码:
397-400
栏目:
出版日期:
2011-07-20

文章信息/Info

Title:
Printed Digital Watermarking Algorithm Corrects Geometric Distortion and Pixel Distortion
文章编号:
1000-5013(2011)04-0397-04
作者:
张伟龙冯桂韩霜
华侨大学信息科学与工程学院
Author(s):
ZHANG Wei-long FENG gui HAN Shuang
College of Information Science and Engineering, Huaqiao University, Quanzhou 362021, China
关键词:
水印嵌入算法 数字水印 离散小波变换 奇异值分解 打印 扫描
Keywords:
embeds watermark algorithm digital watermarking discrete wavelet transform singular value decomposition printing scanning
分类号:
TP309.7
DOI:
10.11830/ISSN.1000-5013.2011.04.0397
文献标志码:
A
摘要:
针对印刷图像存在的几何失真和像素失真问题,提出一种数字水印算法.该算法采用Harris角点检测和Hausdorff距离来校正几何失真,采用非线性灰度变换来纠正像素失真.水印嵌入算法首先对图像进行一级离散小波变换后,再对低频子图进行奇异值分解; 然后,在奇异值上嵌入水印序列,并在提取水印前校正失真.实验表明,该算法对打印扫描具有比较强的鲁棒性,并且能够判断是否二次复印.
Abstract:
For printing images with geometric distortion and pixel distortion problem,the paper presents a digital watermarking algorithm.The algorithm uses the Harris corner detection and Hausdorff distance to correct geometric distortion,and the non-linear gray transform to correct pixel distortion.The algorithm firstly decomposes a image by discrete wavelet transform for first order,then carries on singular value decomposition in the low-frequency subgraph,and then embeds watermark sequence in the singular value,and corrects distortion before watermarking extraction.Experiments show that this algorithm is robust for printing and scanning and determine the second copy.

参考文献/References:

[1] 孙帮勇, 周世生. 数字水印应用于防伪印刷 [J]. 今日印刷, 2005(6):65-66.doi:10.3969/j.issn.1002-6533.2005.06.029.
[2] 张晓黎. 一种抗几何失真的水印校正方法研究 [J]. 计算机应用与软件, 2009(7):14-16.doi:10.3969/j.issn.1000-386X.2009.07.005.
[3] 周志强, 汪渤. 一种基于鲁棒Hausdorff距离的目标匹配算法 [J]. 计算机应用, 2009(1):86-88.
[4] 冀芊茜. 抗打印扫描数字水印算法研究及其在证件防伪中应用 [D]. 长春:吉林大学, 2007.
[5] 师晶, 林克正, 秦丽萍. 基于DWT和SVD的改进分块图像水印算法 [J]. 哈尔滨理工大学学报, 2009(5):35-38.
[6] 王玲, 王晓建, 彭启琮. 半脆弱印刷数字有意义水印算法研究 [J]. 电子科技大学学报, 2008, (z1):37-40.

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备注/Memo

备注/Memo:
福建省自然科学基金资助项目(2010J01340)
更新日期/Last Update: 2014-03-23