Geodesic
The use of a hidden Markov field for the steganalysis of images
Diskretnaya Matematika, Tome 17 (2005) no. 3, pp. 89-104

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We consider a method of steganalysis based on the use of a hidden Markov field model in the case of the LSB-modification of the initial discrete Markov field. We describe iterative filtering algorithms which yield estimates of some parameters of a hidden Markov field with prescribed accuracy. 
@article{DM_2005_17_3_a8,
     author = {M. A. Sidorov},
     title = {The use of a hidden {Markov} field for the steganalysis of images},
     journal = {Diskretnaya Matematika},
     pages = {89--104},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2005_17_3_a8/}
}
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M. A. Sidorov. The use of a hidden Markov field for the steganalysis of images. Diskretnaya Matematika, Tome 17 (2005) no. 3, pp. 89-104. http://geodesic.mathdoc.fr/item/DM_2005_17_3_a8/