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
邓新文,王国才,李 娟,曾 英,向元平
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DENG Xin-wen,WANG Guo-cai,LI Juan,ZENG Ying,XIANG Yuan-ping
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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
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
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.
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.
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