基于JPEG图像的密写改进方案  

The improved steganography scheme based on JPEG image

作　　者：戴薇[1] 

机构地区：[1]武汉科技大学,湖北武汉430081

出　　处：《电子设计工程》2013年第16期107-109,共3页Electronic Design Engineering

摘　　要：为了提高秘密信息的嵌入量,文中基于F4密写提出了一种增大嵌入量的密写改进方法。该方法通过让部分DCT系数中0系数携带秘密信息,从而提高秘密信息的嵌入量。实验表明,该方案在保持图像DCT系数直方图基础上,不但能抵抗直方图和分块特性密写分析,安全性也比较高,而且信息嵌入率也提高了8%左右。In order to increase the embedding capacity of secret messages,a secure steganographic technique which based on the F4 steganography method is propose.The method allows partial DCT coefficients of the 0 coefficients to embed secret information,so as to increase the hiding capacity.This way,the histogram-based an d blockiness-based steganalyses are effectively resisted.Simulation results show that the proposed method is high secure for cover images,andand information embedding rate has increased by about 8%.

关 键 词：JPEG图像 嵌入量 DCT系数 密写分析 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]