基于Karhunen-Loeve变换和最低位替代的图像隐写术  

Image Steganography Based on Karhunen-Loeve Transform and Least Bit Substitution

作　　者：胡晓东[1,2] 陈志红[3] 

机构地区：[1]湖南工程学院电气信息学院,湖南湘潭411101 [2]风电装备与电能变换协同创新中心,湖南湘潭411101 [3]中央民族大学信息工程学院,北京100081

出　　处：《电视技术》2015年第2期80-84,共5页Video Engineering

基　　金：湖南省自然科学基金项目(12JJ4051)

摘　　要：为了提高信息通信安全性能,防止信息被窃取,提出了一种新颖的图像隐写术。采用Karhunen-Loeve变换压缩数据,构造其最低位替代加密数据,并在载体图像内对信息进行编码,其压缩过程用于去除冗余性,同时还设计了编码到一个级别的像素矩阵,由最低位替换的方式进一步实施。实验结果表明,该算法效率高,并能对原始数据进行有效的解密;且与其他机制相比,所提出的技术具有更高的容量和平均信噪比。In order to improve the safety performance of infi^rmation communication for preventing information being stolen, a novel image steganography is proposed in this paper, the minimum bit substitution is eonstructed by using Karhunen-Loeve transform compression data to encrypt data in the carrier and encode the image information for removing redundancy during the compression process; and a matrix of pixel levels is designed from the lowest replace bit further implementation approach. Experimental results show that this algorithm can effectively deerypt the original data. Comparing with other mechanism, this technology has a higher capacity and average SNR.

关 键 词：Karhunen—Loeve变换 图像隐写术 最低位替代 压缩数据 像素矩阵 

分 类 号：TN911.73[电子电信—通信与信息系统]