计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (36): 97-99.

• 学术探讨 • 上一篇    下一篇

一种安全图像小波域密写方案

邓新文,王国才,李 娟,曾 英,向元平   

  1. 中南大学 信息科学与工程学院,长沙 410075
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-12-21 发布日期:2007-12-21
  • 通讯作者: 邓新文

Secure steganographic algorithm in DWT images

DENG Xin-wen,WANG Guo-cai,LI Juan,ZENG Ying,XIANG Yuan-ping   

  1. Department of Information Science and Engineering of Central South University,Changsha 410075,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-12-21 Published:2007-12-21
  • Contact: DENG Xin-wen

摘要: 提出了小波域在中频可调节系数范围δθ之间保持直方图统计特性不变的安全密写方案。该方案不仅能抵抗直方图统计分析,还能抵抗压缩编码。实验对比表明,安全性明显提高。

关键词: 小波变换, 安全, 密写

Abstract: Although it is very meaningful to embed secret messages into a cover image in DWT,an analyst can detect the presence of hidden data according to a change of DWT coefficient histogram.In order to improve the security of embedded information,a secure steganographic technique is proposed,in which middle frequency DWT coefficients between δ and θ are used to carry the secret bits when the DWT coefficient histogram property is reserved.In this way,not only the histogram-based steganalyses but also the compression-coding are effectively resisted.

Key words: DWT, security, steganography