计算机应用与软件2018，Vol.35Issue(5)：253-257,268,6.DOI:10.3969/j.issn.1000-386x.2018.05.045
基于奇异值分解和条件异方差的数字水印算法
DIGITAL WATERMARKING ALGORITHM BASED ON SINGULAR VALUE DECOMPOSITION AND CONDITIONAL HETEROSCEDASTICITY
刘红梅 1干彬 1刘金华 2赵明峰3
作者信息
- 1. 四川传媒学院 四川成都611745
- 2. 电子科技大学电子工程学院 四川成都611731
- 3. 中国移动通信集团设计院有限公司四川分公司 四川成都610045
- 折叠
摘要
Abstract
Image model based on Gauss distribution has low performance on watermark embedding and decoding.To solve this problem, a digital watermarking method is proposed based on singular value decomposition and conditional heteroscedasticity in the wavelet domain.By using wavelet transform and singular value decomposition, an additive watermarking embedding method was given in this paper.The conditional heteroscedasticity model was utilized to model the wavelet coefficients by taking advantages of the important characteristics such as"sharp peak and heavy tailed"marginal distribution and the heteroscedasticity.On the basis of this, the blind detection process of watermark was analyzed by using the theory of statistical hypothesis testing.And the relationship between false alarm probability and detection probability was derived.Simulation results prove the effectiveness of the additive watermark embedding method, and it has better detection performance under attacks such as noise,JPEG compression,filtering,rotation and scaling.关键词
数字水印/奇异值分解/条件异方差模型/工作特性曲线/小波变换Key words
Digital watermarking/Singular value decomposition/Conditional heteroscedasticity model/Operating characteristic curve/Wavelet transform分类
信息技术与安全科学引用本文复制引用
刘红梅,干彬,刘金华,赵明峰..基于奇异值分解和条件异方差的数字水印算法[J].计算机应用与软件,2018,35(5):253-257,268,6.
