摘要
传统数据加密的方式将遥感影像数据直接暴露在攻击者面前,使得遥感影像的分发存在较大安全隐患。引入信息隐藏技术,设计并实现一种基于分数阶傅里叶变换和视频载体的遥感影像隐藏算法。对视频图像帧进行合理划分,采用分数阶傅里叶变换将二进制影像数据嵌入图像帧数据块中,实现遥感影像的可靠和高效隐藏,确保隐藏算法的不可感知性。筛选并设置有效的变换阶数,确保遥感影像隐藏的抗分析性和提取的准确性。充分利用分数阶傅里叶变换空/频双域表达优势,有效增加数据隐藏的容量。
The traditional way of data encryption exposes remote sensing image to the attacker directly,therefore,there is a great potential safety hazard in remote sensing image distribution.In this paper,information hiding technology is introduced to design and develop a remote sensing image hiding algorithm which is based on Fractional Fourier Transform and video carriers.In the algorithm,the video image frame is divided reasonably and the binary map data is embedded into the image frame data block intelligently using Fractional Fourier Transform.It realizes reliable and efficient hiding of remote sensing image and ensures the imperceptibility of the hiding algorithm.The effective transformation order is filtered and set in the algorithm which ensures the anti-analysis ability of remote sensing image hiding and the accuracy of the remote sensing image extraction.The data hiding capacity is increased effectively based on the advantages of spatial-frequency dual-domain expression of Fractional Fourier Transform.
作者
李滨
常德海
LI Bin;CHANG Dehai(State Key Laboratory of Geo-Information Engineering,Xi’an 710054,China;Key Laboratory of Grain Information Processing and Control(Henan University of Technology),Ministry of Education,Zhengzhou 450001,China)
出处
《测绘科学技术学报》
北大核心
2020年第4期404-408,共5页
Journal of Geomatics Science and Technology
基金
地理信息工程国家重点实验室开放基金项目(SKLGIE2017-Z-4-2)
河南省科技攻关项目(162102310612)。
关键词
遥感影像
分数阶傅里叶变换
信息隐藏
视频载体
抗分析性
remote sensing image
Fractional Fourier Transform
information hiding
video carrier
anti-analysis
