小波分析在数字水印印刷防伪领域中的应用
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摘要
数字水印技术作为数字媒体版权保护的有效办法,近年来在国内外引起了人们极大的兴趣。将数字水印应用于印刷防伪,不仅可以有效克服目前诸多防伪技术科技含量不高,升级慢、随机性差的弊端,还具有无需改变原有印刷工艺流程、无需增加印刷成本等特点,只需通过专用软件处理就可将防伪信息嵌入印刷品,彻底更新了印刷防伪的传统观念。它在各种产品印刷包装、商标,发票、支票、证券、信用卡的防伪造、数字媒体的版权保护和跟踪,电子商务中的机要通信和防篡改、防抵赖等方面,有极为广泛的用途。
本课题将从理论和实际应用两个方面对小波分析在数字水印印刷防伪领域中的应用进行研究,通过对小波分析、数字水印技术、印刷防伪技术的深入探讨,使得本课题采用的方法具有比较扎实的理论基础。
本文给出了三种在印刷领域使用数字水印进行防伪的具体办法:
1、利用Logistic映射生成的混沌序列将构成图像置乱,并将这种混沌置乱图像作为水印嵌入到彩色图像之中,进而利用人类视觉对单色光的敏感度差异进行视觉掩盖,以实现水印信息在空域的加载与检测;
2、为了能够在片色区域少,而纹理比较多的地方加载水印信息,我们又研究提出了跳变点信息加载的方法;
3、研究探讨了利用小波变换在变换域进行数字水印的添加与读取方法。提出了一种自适应灰度级水印嵌入算法,并给出了具体的实验效果。
同时,根据印刷行业的特殊性,分析了将数字水印应用于印刷防伪的优势以及存在的主要问题,并给出了相关解决方法。
As an efficient approach to protect digital media copyright, digital watermarking has aroused great interest in the word in recent years. Applying digital watermarking into printing anti-counterfeit not only can effectively overcome the weak points of many anti-counterfeit techniques, such as not containing enough advanced science and technology, slow update speed, poor random nature, etc., but also have some special features, for example, it does not require to change the original printing processes and increase the printing cost. It can embed the anti-counterfeit information into printing works just through specialized software. By doing this, traditional concept of printing anti-counterfeit has been completely renewed. Therefore, digital watermarking has a very broad range of use in many aspects, such as the print packaging and trademarks making of various products, the anti-counterfeit of invoices, checks, securities and credit cards, the protection and tracking of digital media copyright as well as secret communications, modification-preventing and denial-preventing in e-commerce.
This paper carries out a study both theoretically and practically on the application of wavelet analysis in the field of digital watermarking printing anti-counterfeit. Based upon a solid theoretical foundation,a discussion of wavelet analysis and digital watermarking technique,printing anti-counterfeit technique will be afforded:
1、This paper also introduces a specific way to keep anti-counterfeit in printing field through the digital watermarking technique. Firstly, through logistic mapping, the chaotic series are generated to constitute image scrambling. Then, the chaotic scrambling image is embedded as the watermarking into the color image. Finally, based upon the sensitivity differential of human vision to monochromatic visible light, the vision concealment is conducted to achieve the loading and detection of watermarking information in spatial;
2、For watermarking information to the area which piece of color is vary small and is closegrained, we study of the skip change to load information bit;
3、In this paper, the mode of adding and reading watermark use wavelet transform in transform field will be discussed, a embed watermark method and it's experimental result of selfadaptation in grey level will be given.
In addition, according to the speciality of printing industry, this paper analysis the advantage and the subject matter of using watermark into Anti-counterfeiting, then give the solution to these problems.
本课题将从理论和实际应用两个方面对小波分析在数字水印印刷防伪领域中的应用进行研究,通过对小波分析、数字水印技术、印刷防伪技术的深入探讨,使得本课题采用的方法具有比较扎实的理论基础。
本文给出了三种在印刷领域使用数字水印进行防伪的具体办法:
1、利用Logistic映射生成的混沌序列将构成图像置乱,并将这种混沌置乱图像作为水印嵌入到彩色图像之中,进而利用人类视觉对单色光的敏感度差异进行视觉掩盖,以实现水印信息在空域的加载与检测;
2、为了能够在片色区域少,而纹理比较多的地方加载水印信息,我们又研究提出了跳变点信息加载的方法;
3、研究探讨了利用小波变换在变换域进行数字水印的添加与读取方法。提出了一种自适应灰度级水印嵌入算法,并给出了具体的实验效果。
同时,根据印刷行业的特殊性,分析了将数字水印应用于印刷防伪的优势以及存在的主要问题,并给出了相关解决方法。
As an efficient approach to protect digital media copyright, digital watermarking has aroused great interest in the word in recent years. Applying digital watermarking into printing anti-counterfeit not only can effectively overcome the weak points of many anti-counterfeit techniques, such as not containing enough advanced science and technology, slow update speed, poor random nature, etc., but also have some special features, for example, it does not require to change the original printing processes and increase the printing cost. It can embed the anti-counterfeit information into printing works just through specialized software. By doing this, traditional concept of printing anti-counterfeit has been completely renewed. Therefore, digital watermarking has a very broad range of use in many aspects, such as the print packaging and trademarks making of various products, the anti-counterfeit of invoices, checks, securities and credit cards, the protection and tracking of digital media copyright as well as secret communications, modification-preventing and denial-preventing in e-commerce.
This paper carries out a study both theoretically and practically on the application of wavelet analysis in the field of digital watermarking printing anti-counterfeit. Based upon a solid theoretical foundation,a discussion of wavelet analysis and digital watermarking technique,printing anti-counterfeit technique will be afforded:
1、This paper also introduces a specific way to keep anti-counterfeit in printing field through the digital watermarking technique. Firstly, through logistic mapping, the chaotic series are generated to constitute image scrambling. Then, the chaotic scrambling image is embedded as the watermarking into the color image. Finally, based upon the sensitivity differential of human vision to monochromatic visible light, the vision concealment is conducted to achieve the loading and detection of watermarking information in spatial;
2、For watermarking information to the area which piece of color is vary small and is closegrained, we study of the skip change to load information bit;
3、In this paper, the mode of adding and reading watermark use wavelet transform in transform field will be discussed, a embed watermark method and it's experimental result of selfadaptation in grey level will be given.
In addition, according to the speciality of printing industry, this paper analysis the advantage and the subject matter of using watermark into Anti-counterfeiting, then give the solution to these problems.
引文
[1]Tirkel. A, etal. “Electronic Water Mark” Proceeding DICTA 1993 pp666-672, DEC.1993.
[2]Cox I J, Kilian J, Leghton T and Shanmoon T, “Secure spread spectrum watermarking for images audio and video”, IEEE Int. Conf. Image Processing S, pp. 243-246,1996
[3] Cox I J, Kilian J, Leghton T and Shanmoon T, “A Secure Robust Watermark for Multimedia” in Workshop on Information Hiding, Cambridge UK, No.1174 Lecture Notes in Computer Science. Springer-Verlag, pp185-206, 1996
[4] 《信息安全新技术》 杨义先、钮心忻、任金强编著 北京邮电大学出版社;
[5]《信息隐藏技术及其应用》 刘振华、尹萍编著 科学出版社;
[6]《数字水印软件的现状及发展》、《版权保护与数字水印技术》、《典型的数字水印软件》、《数字水印印刷防伪研究与应用现状》、《基于数字水印技术的票据防伪》、《数字水印的关键技术》 伯晓晨 沈林成 常文森 上海阿须数码技术有限公司-数字水印相关文档;
[7]《一种用于认证的小波变换域的数字水印技术》 贺仁亚 程乾生 计算机辅助设计与图形学学报 2001.13(9)
[8]《基于小波变换的数字水印隐藏与检测算法》 杨义先 钮心忻 计算机学报 2000.23(1)
[9]《小波变换技术及其在图像压缩编码中的应用研究》 周建鹏 北京邮电大学信息安全中心;
[10]《Matlab 工具箱应用指南--信息工程篇》 伯晓晨 李涛 刘路等编著 电子工业出版社;
[11]《基于彩色静止数字图像的信息隐藏技术研究》 魏为民 武汉大学计算机学院 2002 年 7 月
[12]Kundur D,Hatzinakos D.Digital watermarking based on multiresolution wavelet data fusion. In: Proc. ICIP[C]. 1997, 1, pp. 544-547.
[13]Boland F M,O’Ruanaidh J J K,Watermarking digital images for copyright protection ,IEEE conference on image processing and its applications,1995,410:326~330
[14]Corvi M,Nicchiotti G,Wavelet-based image watermarking for copyright protection,in Scandinavian Coference On Image Analysis SCIA’97,1997
[15]Wang H J,Kuo C C J,Image protection via watermarking on perceptually significant wavelet coefficients,in proceedings of the IEEE multimedia signal processing workshop,1998:278~284
[16]陈青,苏祥芳,王延平,采用小波变换的鲁棒性隐形水印算法,通信学报,2001,22(7),61~65
[17]周亚训,叶庆卫,徐铁峰,基于小波和余弦变换组合的图像水印方案,电子学报,2001,29(12),1693~1695
[18]王卫卫,杨波,宋国乡,基于图像小波变换低频系数的数字水印算法,信号处理,2001,17(6):554~557
[19]Tsekeridon S,Pitas I,Embedding self-similar watermarks in the wavelet domain,IEEE Int.Conf. on Acoustics,Systems and Signal Processing,2000:1967~1970
[20]Kundur D , Improved digital watermarking through diversity and attack characterization.Proc.Workshop on Multimedia Security at ACM Multimedia’99,1999:53~58
[21]Davoine F,Comparison of two wavelet based image watermarking schemes,Proceedings of the IEEE international conference on image processing,2000,3:682~685
[22]Barni M,Bartolini F,Piva A,Improved wavelet – based watermarking through pixel wise masking,IEEE Transaction on Image Processing,2001,10(5):783~791
[2]Cox I J, Kilian J, Leghton T and Shanmoon T, “Secure spread spectrum watermarking for images audio and video”, IEEE Int. Conf. Image Processing S, pp. 243-246,1996
[3] Cox I J, Kilian J, Leghton T and Shanmoon T, “A Secure Robust Watermark for Multimedia” in Workshop on Information Hiding, Cambridge UK, No.1174 Lecture Notes in Computer Science. Springer-Verlag, pp185-206, 1996
[4] 《信息安全新技术》 杨义先、钮心忻、任金强编著 北京邮电大学出版社;
[5]《信息隐藏技术及其应用》 刘振华、尹萍编著 科学出版社;
[6]《数字水印软件的现状及发展》、《版权保护与数字水印技术》、《典型的数字水印软件》、《数字水印印刷防伪研究与应用现状》、《基于数字水印技术的票据防伪》、《数字水印的关键技术》 伯晓晨 沈林成 常文森 上海阿须数码技术有限公司-数字水印相关文档;
[7]《一种用于认证的小波变换域的数字水印技术》 贺仁亚 程乾生 计算机辅助设计与图形学学报 2001.13(9)
[8]《基于小波变换的数字水印隐藏与检测算法》 杨义先 钮心忻 计算机学报 2000.23(1)
[9]《小波变换技术及其在图像压缩编码中的应用研究》 周建鹏 北京邮电大学信息安全中心;
[10]《Matlab 工具箱应用指南--信息工程篇》 伯晓晨 李涛 刘路等编著 电子工业出版社;
[11]《基于彩色静止数字图像的信息隐藏技术研究》 魏为民 武汉大学计算机学院 2002 年 7 月
[12]Kundur D,Hatzinakos D.Digital watermarking based on multiresolution wavelet data fusion. In: Proc. ICIP[C]. 1997, 1, pp. 544-547.
[13]Boland F M,O’Ruanaidh J J K,Watermarking digital images for copyright protection ,IEEE conference on image processing and its applications,1995,410:326~330
[14]Corvi M,Nicchiotti G,Wavelet-based image watermarking for copyright protection,in Scandinavian Coference On Image Analysis SCIA’97,1997
[15]Wang H J,Kuo C C J,Image protection via watermarking on perceptually significant wavelet coefficients,in proceedings of the IEEE multimedia signal processing workshop,1998:278~284
[16]陈青,苏祥芳,王延平,采用小波变换的鲁棒性隐形水印算法,通信学报,2001,22(7),61~65
[17]周亚训,叶庆卫,徐铁峰,基于小波和余弦变换组合的图像水印方案,电子学报,2001,29(12),1693~1695
[18]王卫卫,杨波,宋国乡,基于图像小波变换低频系数的数字水印算法,信号处理,2001,17(6):554~557
[19]Tsekeridon S,Pitas I,Embedding self-similar watermarks in the wavelet domain,IEEE Int.Conf. on Acoustics,Systems and Signal Processing,2000:1967~1970
[20]Kundur D , Improved digital watermarking through diversity and attack characterization.Proc.Workshop on Multimedia Security at ACM Multimedia’99,1999:53~58
[21]Davoine F,Comparison of two wavelet based image watermarking schemes,Proceedings of the IEEE international conference on image processing,2000,3:682~685
[22]Barni M,Bartolini F,Piva A,Improved wavelet – based watermarking through pixel wise masking,IEEE Transaction on Image Processing,2001,10(5):783~791