摘要： 提出了一种遥感影像中不同权限机密信息隐藏算法，该算法基于遥感影像融合且能够根据用户的不同权限，进行遥感影像中机密信息不同程度的隐藏。实验结果表明：该算法不仅具有强的透明性和大的信息隐藏量，而且对于JPEG 有损压缩、附加噪声、伸缩、滤波、旋转和裁剪等各种常见的影像处理均具有较强的鲁棒性。

关键词: 影像融合；信息隐藏；用户权限；奇异值分解

Abstract: This paper proposes an algorithm for secrete information hiding in remote sensing image based on different authorities and it is based on remote sensing image fusion and can achieve hiding to different degrees of the secrete information according to different authorities of users. Firstly, it segments and extracts the secrete information in the fused remote sensing image and according to different authorities produces the disguised images in which the secrete information to different degrees is presented. Then it exploits singular value division (SVD) algorithm to embed the secrete sub-image imperceptibly into the disguised image to produce the disguised one in which secrete sub-image is hided. And experimental results show that this algorithm is not only quite transparent and has a good effect for large amount of secrete information hiding, but also has a strong robustness against such familiar image processes as JPEG lossy compression, noise adding, scaling, filtering, rotation and cropping.

Key words: Image fusion; Information hiding; Authorities of users; Singular value division(SVD)