›› 2013, Vol. 26 ›› Issue (3): 140-.

• 论文 • 上一篇    下一篇

基于Turbo码与HVS的扩频数字图像水印算法

张茂,虞晓庆   

  1. (1.武警工程大学 研究生管理大队,陕西 西安 710086;2.武警工程大学 基础部,陕西 西安 710086)
  • 出版日期:2013-03-15 发布日期:2013-06-20
  • 作者简介:张茂(1987—),男,硕士研究生。研究方向:数字图像处理。E-mail:845447642@qq.com

Digital Image Blind Watermarking Based on Turbo Code and HVS

ZHANG Mao,YU Xiaoqing2   

  1. (1.Graduate Department,Engineering University of CAPF,Xi'an 710086,China; 2.Department of Fundamental Courses,Armed Police Engineering University,Xi'an 710086,China)
  • Online:2013-03-15 Published:2013-06-20

摘要:

提出一种基于Turbo码和HVS的扩频数字水印算法。首先采用混沌系统和m序列对水印置乱,将其进行Turbo码编码,再将载体图像分块,依据人眼视觉特性,选取纹理特征相对较好的子块进行小波分解,嵌入水印信息。实验结果表明,该算法可有效提高水印的安全性,具有较好的鲁棒性和不可见性。

关键词: Turbo码, 小波变换, 人眼视觉特性, 扩频

Abstract:

A new spread-spectrum digital image watermarking based on Turbo code and the DWT is proposed.First,chaotic sequences and m sequences are used to disorder watermarking,which is coded by Turbo code.Second,the host image is divided into small blocks (4×4 pixels),and the watermark is inserted in the texture area.The experimental results show that the algorithm not only improves the security of the watermarking,but also achieves better invisibility and robustness.

Key words: Turbo code;DWT;HVS;spread-spectrum

中图分类号: 

  • TN911.2