一种新的遥感图像机密信息隐藏算法

为了防止遥感图像包含的机密信息被泄露，将基于样本的图像修补方法用于遥感图像机密信息隐藏。该方法从遥感图像中选择与机密信息图像块最大相似区域，覆盖机密信息块，从而达到机密信息隐藏的目的。该方法不仅具有很强的不觉察性，而且对于遥感图像的使用价值影响较小。结合数字水印技术，实现了根据用户权限来决定用户能否看到隐藏的机密信息，从而方便了遥感图像的使用。仿真实验结果表明，该方法是可行的，能够提高遥感图像使用的安全性。

New secrete information hiding method for remote sensing images

To prevent the leak of secrete information hidden in remote sensing image, a sample-based method for image inpainting was used in hiding secrete information in remote sensing image. The method selected the maximum region similar to secrete information image, and covered the secrete information block, thus hiding the secrete information. The method had not only strong invisibility, but also little influence on the use of remote sensing image. With reference to digital watermarking, whether users can see secrete information or not according to their authority status was realized, which facilitated the use of remote sensing image. Experimental results show that the method is feasible, and it improves the application security of remote sensing image.