一种新颖的图像自适应信息隐藏算法  

Novel adaptive information hiding algorithm for image

作　　者：李长河[1] 张永强[1] 王君[2] 

机构地区：[1]西安理工大学计算机科学与工程学院,陕西西安710048 [2]西安电子科技大学计算机外部设备研究所,陕西西安710071

出　　处：《计算机应用》2005年第5期1138-1140,1144,共4页journal of Computer Applications

摘　　要：在深入研究图像像素灰度差分的基础上,提出了一种新颖有效的自适应信息隐藏算法。该算法结合图像的局部特征,充分利用人类视觉的各种掩蔽特性以自适应地嵌入秘密信息,使得对原图像所作的改变具有很好的不可见性。实验结果表明,利用该算法进行信息隐藏易于实现,且具有较大的信息隐藏容量及一定的鲁棒性,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 study of image pixel-value differencing, a novel and efficient adaptive information hiding algorithm was proposed. Incorporating the local feature of digital image and taking full advantage of all kinds of masking characteristics of the human visual system, the algorithm embedded secret information self-adaptively. As a result, the changes in the cover image were much imperceptible. Experiment results show that the method is easy to implement, and that a large capacity of hiding information and a goodish 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：TP317.4[自动化与计算机技术—计算机软件与理论]