X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/canny.git/blobdiff_plain/dc91e8c17710cc249f83001625e1d14581f2d276..5178f772a789c49b261c48acc466a982d413a9a9:/experiments.tex?ds=sidebyside diff --git a/experiments.tex b/experiments.tex index 22900c0..9590b1c 100644 --- a/experiments.tex +++ b/experiments.tex @@ -150,9 +150,12 @@ The steganalysis quality of our approach has been evaluated through the % two Ensemble Classifier~\cite{DBLP:journals/tifs/KodovskyFH12} based steganalyser. Its particularization to spatial domain is considered as state of the art steganalysers. -Firstly, a space -of 686 co-occurrence and Markov features is extracted from the -set of cover images and the set of training images. Next a small +\JFC{Features that are embedded into this steganalysis process +are CCPEV and SPAM features as described +in~\cite{DBLP:dblp_conf/mediaforensics/KodovskyPF10}. +These latter are extracted from the +set of cover images and the set of training images.} +Next a small set of weak classifiers is randomly built, each one working on a subspace of all the features. The final classifier is constructed by a majority voting @@ -213,3 +216,13 @@ However due to its huge number of integration features, it is not lightweight. All these numerical experiments confirm the objective presented in the motivations: providing an efficient steganography approach in a lightweight manner. + +\RC{In Figure~\ref{fig:error}, Ensemble Classifier has been used with all the previsou steganalizers with 3 different payloads. It can be observed that with important payload, STABYLO is not efficient, but as mentionned its complexity is far more simple compared to other tools.\\ +\begin{figure} +\begin{center} +\includegraphics[scale=0.5]{error} +\end{center} +\caption{Error obtained by Ensemble classifier with WOW/UNIWARD, HUGO, and STABYLO and different paylaods.} +\label{fig:error} +\end{figure} +}