Abstract:
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. Experiment on the standard images shows the improved algorithm can get parameters close to the cover-image, and resist F5 steganalysis.
Key words:
hiding algorithm,
F5 algorithm,
F5 steganalysis,
Discrete Cosine Transformation(DCT) histogram
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。
关键词:
隐藏算法,
F5算法,
F5隐写分析算法,
离散余弦变换直方图
CLC Number:
WANG Jian; TANG Guang-ming. Improved F5 Algorithm Based on Surplus Zero Coefficient Elimination[J]. Computer Engineering, 2009, 35(16): 164-166.
王 舰;汤光明. 基于冗余零系数消除的F5改进算法[J]. 计算机工程, 2009, 35(16): 164-166.