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基于小波域扩谱的无损数据隐藏 被引量:2

Reversible Data Hiding Based on Wavelet Spread-Spectrum
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摘要 该文提出一种基于小波域扩谱的无损数据隐藏方法。该方法根据扩谱原理把数据嵌入到图象整数小波变换后的高频子带系数中;通过嵌入伪信息的方式,解决了在提取信息时无法判断在哪些系数上嵌入了水印信息的问题;另外,为防止小波反变换时图象灰度溢出问题,使用了直方图调整技术。实验结果表明,该方法能嵌入大容量的数据信息,同时保持很好的视觉效果,在图象认证及伪装通讯等领域具有广泛用途。 This paper presents a reversible data hiding method based on wavelet spread-spectrum and histogram modi-fication.According to the principle of spread-spectrum,we have embed data in wavelet high-frequency subband coeffi-cients.The pseudo information is embedded to solve the problem that we don't know which coefficients are used for embedding when extracting the embedded information.To prevent the overflow and underflow problem,histogram modifica-tion is used.Experiments show that our method can achieve good performance both on capacity and visual effect.
出处 《计算机工程与应用》 CSCD 北大核心 2004年第14期1-3,8,共4页 Computer Engineering and Applications
基金 国家自然科学基金项目(网络与信息安全重大研究计划)资助(编号:90304017)
关键词 整数小波 扩谱 直方图调整 无损数据隐藏 integer wavelet,spread-spectrum,histogram modification,reversible data hiding
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参考文献5

  • 1Jessica Fridrich, M Goljan, Rui Du. Invertible Authentication[C].In:Proc SPIE Photonics West,Security and Watermarking of Multimedia Contents Ⅲ,San Jose ,California,2001-01 ;3971:197~208 被引量:1
  • 2M Celik,G Sharma,A M Tekalp et al.Reversible data hiding[C].In:Proceedings of the International Conference on Image Processing 2002, Rochester, NY, 2002-09 被引量:1
  • 3Guorong Xuan,Jiang Zhu,Jidong Chen et al. Distortionless Data Hiding Based on Integer Wavelet Transform[J].IEEE journal,ELECTRONICS LETFERS,2002;38(25): 1646~1648 被引量:1
  • 4Jun Tian. High capacity reversible data embedding and content authentication[C].In:2003 IEEE International Conference on Acoustics,Speech, and Signal Processing, 2003-04; 3: 517~520 被引量:1
  • 5Josep Domingo-Ferrer, Francesc Seb′e. Invertible spread-spectrum watermarking for image authentication and multilevel access to precision-critical watermarked imeges[C].In :Proceedings of the International Conference on Information Technology :Coding and Computing (ITCC.02) 被引量:1

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