Chi-Square Detection for PVD Steganography

I. Pan, Kung-Chin Liu, Chiang-Lung Liu
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引用次数: 1

Abstract

Although the Pixel-Value Differencing (PVD) steganography can avoid being detected by the RS steganalysis, the histogram of the pixel-value differences poses an abnormal distribution. Based on this hiding characteristic, this paper proposes a PVD steganalysis based on chi-Square statistics. The degrees of freedom were adopted to be tested for obtaining various detection accuracies (ACs). Experimental results demonstrate the detection accuracies are all above 80%. When the degrees of freedom are set as 10 while the accuracy is the best (AC = 83%). It means that the proposed Chi-Square based method is an efficient detection for PVD steganography.
PVD隐写的卡方检测
虽然像素值差分(PVD)隐写可以避免RS隐写分析的检测,但像素值差分的直方图呈现异常分布。基于这种隐藏特性,本文提出了一种基于卡方统计量的PVD隐写分析方法。采用自由度进行测试,以获得各种检测精度(ACs)。实验结果表明,该方法的检测准确率均在80%以上。当自由度设为10时,精度最好(AC = 83%)。这意味着所提出的基于卡方的方法是一种有效的PVD隐写检测方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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