摘要
F5隐写分析算法利用收缩现象,比较剪裁后图像直方图和估计载体图像直方图的差异进行检测。针对该算法的特点,提出改进的F5算法,通过部分消除冗余零系数,提高嵌入率、防止收缩现象的发生。在标准图像集上的实验结果表明,改进算法改善了含密直方图的收缩现象,各检测参数与原始载体图像差别较小,可以有效抵抗F5隐写分析算法。
F5 steganalysis uses the shrinkage and compares the differences between estimation of the cover-image histogram and the stego-image to realize detection. This paper presents improved F5 algorithm to resist such detection based on the characteristic of F5 steganalysis. It can eliminate a part of surplus 0, elevate embedding efficiency and prevent the shrinkage. Expeiiment on the standard images shows the improved algorithm can get parameters close to the cover-image, and resist F5 steganalysis.
出处
《计算机工程》
CAS
CSCD
北大核心
2009年第16期164-166,共3页
Computer Engineering