基于图像复杂度分类的卫星遥感图像信息隐藏  

Information Hiding of Satellite Remote Image Based on Image Complexity Classification

作　　者：冯新岗[1] 周诠[1] 

机构地区：[1]中国空间技术研究院西安分院空间微波技术国家级重点实验室,西安710000

出　　处：《宇航学报》2010年第7期1850-1854,共5页Journal of Astronautics

基　　金：国家重点实验室基金项目(9140C5303020601);(9140C5305020706)资助课题

摘　　要：以卫星遥感图像作为载体图像,提出了一种基于图像复杂度分类的信息隐藏算法。为了实现图像块分类,将原始图像分块并利用谱值统计特性进行分类。根据分类的结果,对满足条件的图像块进行离散余弦变换(DCT),在DCT域中频系数嵌入秘密信息。实验结果表明,不仅可以通过改进嵌入算法来提高隐藏性能,而且可以通过选择合适的载体图像来提高隐藏性能。A kind of embed algorithm is proposed based on image complexity classification while the satellite remote sensing image is the cover image. By exploiting the statistical features of image＇s spectrum,the algorithm splits the cover image and classifies these blocks by image complexity. The secret message is inserted into DCT middle coefficients of the selected blocks according to the classification result. Experimental results show that the hiding performance can be improved not only from the embed algorithm itself ,but also from the cover image selection.

关 键 词：卫星遥感图像 信息隐藏 复杂度 DCT 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]