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计算机工程 ›› 2011, Vol. 37 ›› Issue (8): 132-134. doi: 10.3969/j.issn.1000-3428.2011.08.045

• 安全技术 • 上一篇    下一篇

基于小波域的模糊混沌数字水印算法

刘剑鸣,李晓君   

  1. (燕山大学电气工程学院工业计算机控制工程河北省重点实验室,河北 秦皇岛 066004)
  • 出版日期:2011-04-20 发布日期:2012-10-31
  • 作者简介:刘剑鸣(1961-),男,副教授、硕士,主研方向:密码学,数字水印,图像处理,Java软件开发;李晓君,硕士研究生
  • 基金资助:
    黑龙江省自然科学基金资助项目(E200935)

Fuzzy Chaotic Digital Watermark Algorithm Based on Wavelet Domain

LIU Jian-ming, LI Xiao-jun   

  1. (Key Lab of Industrial Computer Control Engineering of Hebei Province, Institute of Electrical Engineering,Yanshan University, Qinhuangdao 066004, China)
  • Online:2011-04-20 Published:2012-10-31

摘要: 为实现对多媒体数据版权的有效保护,提出一种基于混沌映射和二维小波变换的模糊自适应数字水印算法。利用Lorenz混沌映射产生的混沌序列对水印图像进行加密,通过离散小波变换及模糊控制得到水印图像的嵌入强度,将加密后的水印图像嵌入宿主图像。仿真实验和性能分析表明,该算法具有良好的隐蔽性、鲁棒性和安全性。

关键词: 数字水印, 模糊控制, 小波变换, Lorenz混沌映射

Abstract: A fuzzy adaptive digital watermark algorithm which based on chaos mapping and two-dimension wavelet transform is proposed to protect the copyrights of multi-media data effectively. The proposed algorithm encrypted the watermark by a chaos sequence using Lorenz chaotic mapping method. The host image is transformed by discrete wavelet, then the watermark is embedded into it according to the embedding strength of watermark decided by fuzzy controller. Experiment and performance analysis result shows that watermark generated by the proposed algorithm has good invisible secure and robust characteristic.

Key words: digital watermark, fuzzy control, wavelet transform, Lorenz chaotic mapping

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