遥感影像中多个机密信息的授权使用技术

一般的图像域信息隐藏算法并不适用于遥感影像,将信息隐藏的涵义加以拓广,提出了遥感影像中多个机密信息的授权使用技术,即根据用户的不同权限对遥感影像中的多个机密信息进行不同程度的隐藏,并提出了适用于遥感影像的信息隐藏小波域算法,该算法是盲算法,且基于HVS(human visual system)特性,并自适应于遥感影像特征。能很好地保存机密地物的纹理与光谱特性,复原遥感影像逼真,对遥感影像的应用价值没有影响,且对影像添噪与JPEG有损压缩具有较强的鲁棒性。

Authorized Exploitation of Multi Secretes in Remote Sensing Image

In this paper,we illuminated that general image hiding algorithms don't adapt to remote sensing image,developed the connotation of information hiding and proposed a technique for authorized exploitation of multi secretes in remote sensing image,namely hiding to different degrees the multi secretes in a remote sensing image according to users' different authorizations.In the paper we also proposed a wavelet information hiding algorithm suitable for a remote sensing image,which is a practical blind information hiding algorithm adapting to characters of a remote sensing image and based on HVS(human visual system) character.The algorithm has the advantages of strong transparency,large information hiding amount,exact extraction results of secrete information,good conservation of textural and spectral features of the secrete ground object,vivid resumption of the remote sensing image and strong robustness against noise-adding and JPEG lossy compression.Furthermore the algorithm has no influence on the applied value of a remote sensing image.