“Steganalysis in Technicolor” Boosting WS detection of stego images from CFA-interpolated covers
“Steganalysis in Technicolor” Boosting WS detection of stego images from CFA-interpolated covers
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DOI：
10.1109/icassp.2014.6854349
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发表时间：
2014-05
期刊：
影响因子：
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通讯作者：
Matthias Kirchner;Rainer Böhme
中科院分区：
文献类型：
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作者：
Matthias Kirchner;Rainer Böhme
经验封面的隐写安全性最好理解为灰度图像。然而，这个世界，以及几乎所有的数字图像，都更加丰富多彩。本文扩展了加权隐写图像（WS）隐写分析方法，以检测由带有彩色滤波阵列（CFA）插值痕迹的封面产生的隐写图像，这种隐写图像通常用于用数码相机获取的图像。该方法结合了CFA取证技术和最先进的WS隐写分析技术。来自大型数据集的经验结果表明，检测性能显着提高，特别是对于小有效载荷。彩色覆盖的这一特殊弱点使人们对灰度图像隐写术通过独立处理每个色度通道而推广到彩色图像的普遍假设产生了疑问。
Steganographic security in empirical covers is best understood for grayscale images. However, the world, and almost all digital images of it, are more colorful. This paper extends the weighted stego-image (WS) steganalysis method to detect stego images produced from covers that exhibit traces of color filter array (CFA) interpolation, which is common for images acquired with digital cameras. The approach combines techniques of CFA forensics with state-of-the-art WS steganalysis. Empirical results from large datasets indicate significant increases in detection performance, in particular for small payloads. This specific weakness of color covers calls into question the common assumption that grayscale image steganography generalizes to color images by treating each chroma channel independently.