Secure steganographic algorithm in DWT images

Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (36): 97-99.

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Secure steganographic algorithm in DWT images

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

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

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

中南大学信息科学与工程学院，长沙 410075

通讯作者: 邓新文

Abstract

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

摘要： 提出了小波域在中频可调节系数范围δ和θ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

DENG Xin-wen,WANG Guo-cai,LI Juan,ZENG Ying,XIANG Yuan-ping. Secure steganographic algorithm in DWT images[J]. Computer Engineering and Applications, 2007, 43(36): 97-99.

邓新文,王国才,李娟,曾英,向元平. 一种安全图像小波域密写方案[J]. 计算机工程与应用, 2007, 43(36): 97-99.

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Secure steganographic algorithm in DWT images

一种安全图像小波域密写方案

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