一种自适应的数字图像信息隐藏算法  

A NEW ADAPTIVE ALGORITHM ON DIGITAL IMAGE INFORMATION HIDING

作　　者：司银女[1] 康宝生[1] 

机构地区：[1]西北大学信息科学与技术学院,陕西西安710069

出　　处：《计算机应用与软件》2008年第9期49-51,121,共4页Computer Applications and Software

基　　金：陕西省自然科学基金(2005A14)

摘　　要：给出一种新的自适应数字图像信息隐藏算法。在传统混合算法的基础上,根据公开图像本身的像素分布和颜色特点,对混合系数进行改变。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自适应地嵌入秘密信息,对原图像所作的改变具有很好的不可见性。算法简单、信息隐藏量大,且具有一定的鲁棒性。A new adaptive algorithm on digital image information hiding is presented. Based on traditional mixed algorithm, it is concerned with the public image pixel distribution and its own color character in the image and changes the mixed coefficient. Concerned with image ＇s partial characteristic and fully using human visual system which has various shelter characteristics, the algorithm adaptively embeds the image hiding information, and has a good invisibility in changes of the old image. The approach is easy and has large capacity of hiding information with goodish robustness.

关 键 词：自适应 峰值信噪比 数字图像置乱 数字图像隐藏 方差熵 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构] TP391.41[自动化与计算机技术—计算机科学与技术]