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In the paper, a new blind image steganalysis scheme for JPEG image steganography is proposed. Space filling curve is exploited to scan quantized block DCT coefficients. Markov model is applied to model the dependencies between quantized DCT cofficients so as to extract intrablock and interblock transition probability matrices. The experiments on F5, Steghide and MB1 steganography show the method can...
We proposed a CPMF (combinative probability mass function) model for universal steganalysis to images from nature images and forged images, which can present statistic divergence between cover or forged image and steg image prominently. Based on the two features of images and CPMF mode, we discussed the affection of steg process and forged process on the nature images. This model relied most on the...
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