一种改进的图像自适应信息隐藏算法  

An Improved Adaptive Information Hiding Algorithm for Image

作　　者：王君[1] 田玉敏[1] 李春霞[1] 

机构地区：[1]西安电子科技大学外部设备研究所,陕西西安710071

出　　处：《计算机应用研究》2005年第5期145-147,共3页Application Research of Computers

基　　金：陕西省自然科学基金资助项目(2003F10)

摘　　要：在深入分析图像像素灰度差分隐藏算法的基础上,提出了一种改进的自适应信息隐藏算法,它充分利用人类视觉的各种掩蔽特性,结合图像的局部特征以自适应地嵌入秘密信息,使得对原图像所做的改变具有更好的不可见性。实验结果表明,利用改进的算法进行信息隐藏易于实现,增加了图像的信息隐藏容量,提高了其鲁棒性,从而缓解了信息隐藏系统各技术指标之间存在的矛盾。Based on the detailed analysis of digital image pixel value differencing hiding method, an improved adaptive information hiding algorithm is proposed. Taking full advantage of all kinds of masking characteristics of the human visual system and incorporating the local feature of digital image, the algorithm embeds secret information self adaptively. As a result, the changes in the cover image are more imperceptible. Experimental results show that the improved method is easy to implement, and that the more capacity of hiding information and the better robustness are achieved, and accordingly the conflict between the technical requirements for an information hiding system is alleviated.

关 键 词：信息隐藏 自适应 人类视觉系统(HVS) 双像素块 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]