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图像LSB匹配隐藏的预分类检测模型

DOI: 10.11834/jig.20130212

Keywords: 信息隐藏,隐写分析,LSB匹配,预分类,Benford定律

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Abstract:

当前针对图像LSB匹配隐藏的各种检测方法跨数据集测试性能不佳,其检测效果对于JPEG压缩的和未压缩的图像往往差别很大。对两类图像的颜色空间分布进行了分析,利用量化的DCT交流系数的最高有效位重压缩后不再服从广义Benford定律的现象,查明图像的压缩历史,进而根据图像的通道数以及是否被压缩分别采取不同算法或相同算法的不同参数集合进行检测。实验结果表明,基于该检测模型能够有效提升算法的跨数据集检测能力,增强隐藏检测算法的实用性。

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