计算机应用

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基于小波域的自适应盲检彩色水印算法

刘志军   

  1. 河北省沧州师范专科学校计算机系 刘志军 061001
  • 收稿日期:2008-01-29 修回日期:1900-01-01 发布日期:2008-07-01 出版日期:2008-07-01
  • 通讯作者: 刘志军

Blind color watermarking algorithm based on self-adaptation of wavelet domain

zhi-jun liu   

  • Received:2008-01-29 Revised:1900-01-01 Online:2008-07-01 Published:2008-07-01
  • Contact: zhi-jun liu

摘要: 提出了一种新颖的基于小波域对比度与HVS特性自适应盲检彩色水印算法。主要包括根据小波对比度和HVS特性对嵌入强度因子的自适应计算;彩色水印的嵌入与盲提取算法(采用了Arnold变换置乱,交织和BCH编码技术)。利用Matlab 6.5平台进行了算法的攻击与无攻击实验。实验结果表明:该算法在无攻击的情况下具有较强的透明性和鲁棒性;而在添加噪声、中值滤波、剪切、JPEG压缩攻击等的情况下具有较好的鲁棒性,在保护多媒体数据版权方面具有较高的实用价值。

关键词: 小波对比度, 视觉特性, 小波变换, 彩色水印

Abstract: This paper proposed a novel blind color watermarking algorithm based on self-adaptation of wavelet contrast and HVS speciality. It mainly includes the self-adaptation calculation of the factor of embedding intensity on the basis of wavelet contrast and HVS speciality; color watermarking embedding and blind extracting algorithm (using Arnold transform, interweaving and BCH coding technology). Experiments of attack and non-attack were carried out in the Matlab 6.5. The experimental results show that the algorithm has stronger invisibility and robustness on non-attack. It has better robustness on the common watermarking attack such as noise adding, middlefilter, croping, JPEG compression and so on; it has higher value on the multimedia copyright protection.

Key words: WaveLet Contrast, HVS speciality, Wavelet Transform, Color Watermarking