辽宁石油化工大学学报 ›› 2007, Vol. 27 ›› Issue (1): 63-66.

• 计算机与自动化 • 上一篇    下一篇

基于小波变换的数字水印算法

姜凤利   

  1. 辽宁石油化工大学理学院, 辽宁抚顺113001
  • 收稿日期:2006-10-10 出版日期:2007-03-20 发布日期:2017-07-05
  • 作者简介:姜凤利(1980 —), 男, 辽宁大连市, 硕士。

A Digital Watermark Algorithm Based on Discrete Wavelet Transformation

  1. School of Science , Liaoning University of Petroleum &Chemical Technology ,Fushun Liaoning 113001 , P. R. China
  • Received:2006-10-10 Published:2007-03-20 Online:2017-07-05

摘要:     为保证水印的不可见性和鲁棒性, 提出了一种有效的基于水印DWT 的数字图像水印算法。该算法首先利用Arnold 置乱和Logistic 混沌系统对水印进行加密, 增强水印系统的安全性。然后结合人类视觉系统选取DWT 变换系数, 并通过对系数的改变实现水印的嵌入。实验结果表明, 该算法对剪切、中值滤波、噪声、JPEG 压缩等操作具有较强的鲁棒性。

关键词: 数字水印,  混沌序列,  小波变换,  密钥

Abstract:

 In order to ensure the concealment and robustness of watermark, a dig ital image watermark algorithm based on DWT was proposed . Firstly , the watermark was encrypted by Arnold scratch and Logistic chaotic system in order to enhance the security of watermark system. And then comparing HVS , transforming coefficients of DWT were elected , and watermark was embedded by changing transforming coefficients. The experiment results show that the algorithm has a good robustness for some image processing operations such as clipping , median filtering , noise , and JPEG compression.

Key words: Digital watermark ,    , Chaotic sequences,     , Wavelet transformation,    , Secret key

引用本文

姜凤利. 基于小波变换的数字水印算法[J]. 辽宁石油化工大学学报, 2007, 27(1): 63-66.

JIANG Feng - li. A Digital Watermark Algorithm Based on Discrete Wavelet Transformation[J]. Journal of Liaoning Petrochemical University, 2007, 27(1): 63-66.

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