一种基于内容的遥感影像安全分发方法  

A Secure Distribution Method for Remote Sensing Image Based on Content

作　　者：徐彦彦[1] 王慧颖[1] 徐正全[1] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2013年第12期1475-1479,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41101416);国家973计划资助项目(2011CB302204);湖北省自然科学基金资助项目(2011CDB262);中国航天科技集团公司卫星应用研究院创新基金资助项目(20121689)

摘　　要：联合解密与指纹嵌入(joint fingerprinting and decryption,JFD)框架能为遥感影像的安全分发提供完整的安全保护,且效率较高。但这种方案不仅导致指纹嵌入后的图像质量下降较为明显,且不能满足遥感影像的近无损性的要求。针对JFD框架的这种缺陷,本文提出了一种基于内容的遥感影像安全分发方法,对遥感影像根据内容进行分类,选取对遥感影像内容影响较小的区域嵌入指纹;提出邻域相似度的定义,选取加密后邻域相关性保持较好的区域进行部分解密,嵌入指纹。实验结果表明,利用本文提出的方案获得的嵌入指纹后的图像质量较好,且不影响遥感影像的后续应用。The joint fingerprinting and deeryption （JFD） framework sive security protection f But, this framework will or distribution of remote sensing images, lead to degr and therefore cannot meet the specific adation of image quality after near-lossless requirement of r can provide and is high embedding f comprehen ly efficient. ingerprints, emote sensing images. A secure distribution method for remote sensing images based on content is proposed. The image is partitioned into different regions, and the region which affects image content greatly is excluded from the fingerprint embedding area. At the same time neighborhood similarity is defined to evaluate the change of pixel correlation, areas with good neighborhood similarity after encryption are chosen or embedded fingerprints. Experimental results show that the fingerprinted image has good image quality, and it will not affect its applications.

关 键 词：遥感影像 安全分发 近无损 邻域相似度 加密 数字指纹 

分 类 号：P237.9[天文地球—摄影测量与遥感]