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计算机工程 ›› 2012, Vol. 38 ›› Issue (19): 107-110. doi: 10.3969/j.issn.1000-3428.2012.19.028

• 安全技术 • 上一篇    下一篇

基于混沌加密和SVD的数字图像水印算法

薛胜男a,b,陈秀宏a   

  1. (江南大学 a. 数字媒体学院;b. 物联网工程学院,江苏 无锡 214122)
  • 收稿日期:2011-12-05 出版日期:2012-10-05 发布日期:2012-09-29
  • 作者简介:薛胜男(1987-),女,硕士研究生,主研方向:数字水印技术;陈秀宏,教授
  • 基金资助:
    中央高校基本科研业务费专项基金资助项目(JUSRP211A70)

Digital Image Watermarking Algorithm Based on Chaos Encryption and SVD

XUE Sheng-nan a,b, CHEN Xiu-hong a   

  1. (a. School of Digital Media; b. School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China)
  • Received:2011-12-05 Online:2012-10-05 Published:2012-09-29

摘要: 为提高传统数字图像水印算法的安全性,提出一种基于混沌加密和奇异值分解的水印算法。采用Chebyshev混沌映射产生的混沌序列加密水印图像,将加密后的水印图像与原始图像进行分块,再对每一块进行奇异值分解,从而实现水印的嵌入。仿真实验结果证明,该算法对JPEG压缩、高斯噪声、椒盐噪声、滤波等具有较高的鲁棒性,同时能较好地抵抗剪切攻击。

关键词: 数字水印, 图像置乱, 混沌加密, 像素置乱度, 奇异值分解, 离散小波变换

Abstract: In order to improve the security of digital image watermarking algorithm, a watermarking algorithm based on chaos-encryption and Singular Value Decomposition(SVD) is proposed. It applies Chebyshev chaos mapping to encrypt the watermarking image, makes the encrypted watermarking image and the host image into several blocks, and does SVD on every block. Hence the watermark is embedded into the host image. Simulation result shows that the algorithm is robust against JPEG compression, noise attack and filter attack, and it can resist crop attack.

Key words: digital watermarking, image scrambling, chaos encryption, pixel scrambling degree, Singular Value Decomposition(SVD), Discrete Wavelet Transform(DWT)

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