图像信息隐藏DCT算法不可见性研究  

Research on the Invisibility of Image Information Hiding Based on DCT

作　　者：吴柯[1] 薛龙[1] 

机构地区：[1]湖南理工学院信息与通信工程学院

出　　处：《电子技术（上海）》2012年第8期22-23,21,共3页Electronic Technology

摘　　要：为了分析图像信息隐藏DCT算法的不可见性,文章采用一种DCT信息隐藏算法,对不同数据嵌入容量、不同数据嵌入位置进行研究,分别得到嵌入容量相同时不同嵌入位置的PSNR和嵌入位置相同时不同嵌入容量的PSNR,并绘制PSNR曲线图。当嵌入信息数据量较少,或信息嵌入在中低频区域时,算法的不可见性较好。In order to analyze the invisibility of image information hiding based on DCT, the article uses an information hiding algorithm based on DCT to research on different embedding capacity and different data embedded position, the PSNR of the data embedded in different positions with same capacity, and the PSNR of the data embedded in different capacities with same position are obtained, respectively, and the PSNR curves are plotted. When the data amount embedded being less or the information being embedded in the low frequency region, the algorithm offers better invisibility.

关 键 词：数字图像 信息隐藏 DCT 不可见性 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]