with a secret bit stream depending on a key, the cover, and the message to embed.
This well studied steganographic approach never decreases (resp. increases)
pixel with even value (resp. odd value) and may break structural symmetry.
-These structural modification can be detected by statistical approaches
+These structural modifications can be detected by statistical approaches
and thus by steganalysis methods~\cite{DBLP:journals/tsp/DumitrescuWW03,DBLP:conf/mmsec/FridrichGD01,Dumitrescu:2005:LSB:1073170.1073176}.
This drawback is avoided in LSB matching (LSBM) where
the $+1$ or $-1$ is randomly added to the cover pixel LSB value
only if this one does not match the secret bit.
-Since probabilities of increasing or decreasing pixel value are the same, statistical approaches
-cannot be applied there to discover stego-images in LSBM.
-The most accurate detectors for this matching are universal steganalysers such as~\cite{LHS08,DBLP:conf/ih/2005,FK12}
+Since probabilities of increasing or decreasing the pixel value are the same, statistical approaches
+cannot be applied here to discover stego-images in LSBM.
+The most accurate detectors for this matching are universal steganalysers such as~\cite{LHS08,DBLP:conf/ih/2005,FK12},
which classify images thanks to extracted features from neighboring elements of noise residual.
-LSB matching revisited (LSBMR)~\cite{Mielikainen06} have been recently introduced.
+LSB matching revisited (LSBMR) has been recently introduced in~\cite{Mielikainen06}.
For a given pair of pixels, in which the LSB
of the first pixel carries one bit of secret message, and the relationship
(odd–even combination) of the two pixel values carries
another bit of secret message.
-
+\CG{Je pige pas cette phrase, et je comprends pas l'explication du LSBMR :/}
In such a way, the modification
changes to the cover image at the same payload compared to
LSB replacement and LSBM. It is also shown that such a new
scheme can avoid the LSB replacement style asymmetry, and
-thus it should make the detection slightly more difficult than the
+thus it should make the detection slightly more difficult than in the
LSBM approach. % based on our experiments