基于小波包变换的多区域信息隐藏算法  

INFORMATION HIDING ALGORITHM OF MULTI-SECTION BASED ON WAVELET PACKETS TRANSFORM

作　　者：刘红军[1] 徐汀荣[1] 

机构地区：[1]苏州大学计算机科学与技术学院,江苏苏州215006

出　　处：《计算机应用与软件》2009年第5期252-254,共3页Computer Applications and Software

摘　　要：提出一种基于小波包变换的多区域信息隐藏算法。为了提高秘密信息抗攻击的鲁棒性,算法引入小波包分解,通过修改小波域系数,将秘密信息同时嵌入到分解后的多个子区域。针对不同的子区域,自适应地设置相应的嵌入因子,从而保证了嵌入信息后的透明性。秘密信息的提取不需要原始图像,实验结果表明:对于一些常见的攻击,算法具有较好的鲁棒性且易于实现。In this paper, we present a multi-section information hiding algorithm based on wavelet packets transform. To increase the robustness of the secret messages against attacks, the wavelet packets decomposition was introduced, and the secret messages were embedded into decomposed multi-sections simultaneously by modifying the wavelet domain coefficient. According to different sections, corresponding embedded factors are adaptively chosen, so as to have ensured the transparent of the algorithm after the messages are embedded. The primitive picture is not required when extracting secret message. Experimental results demonstrate that this algorithm is quite robust against normal attacks and is easy to be implemented.

关 键 词：信息隐藏 小波包变换 多区域 自适应 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构] TM711[自动化与计算机技术—计算机科学与技术]