一种基于多小波变换的信息隐藏算法

An Information Hiding Algorithm Based on MWT

利用多小波变换进行信息隐藏随着多小波的不断发展而出现,但这方面的研究不多。信息隐藏算法中载体信号的统计特征是极其重要的因素。利用多小波变换后图像的统计特性,使用视觉掩蔽模型达到信息自适应嵌入的目的,设计一种信息隐藏算法。实验证明,对图像进行离散多小波变换来隐藏信息,比用单小波隐藏具有更大的视觉容限,隐藏效果更好。

With the development of multiwavelet, information hiding which makes use of multiwavelet transformation appeared, but underwent little research. In the algorithm of information hiding, statistics characteristic of carrier signal is an extremely important factor. An algorithm of information hiding has been designed by using image statistics characteristic property of mnltiwavelet transformation and human visual masking model which is to achieve the effect of adaptive embedding, Experimental results show that the presented scheme has larger visual tolerance and better hiding effect than wavelet transform