\author{Jean-Fran\c cois Couchot, Raphael Couturier, and Christophe Guyeux*
FEMTO-ST Institute, UMR 6174 CNRS\\
- Computer Science Laboratory DISC
- University of Franche-Comt\'{e}
+ Computer Science Laboratory DISC,
+ University of Franche-Comt\'{e},
Besan\c con, France.\\
\{jean-francois.couchot, raphael.couturier, christophe.guyeux\}@femto-st.fr\\
$*:$ Authors in alphabetic order.\\
\input{intro.tex}
-\section{Our Approach}\label{sec:ourapproach}
+\section{Presentation of the Proposed Approach}\label{sec:ourapproach}
\input{ourapproach.tex}
\section{Experiments}\label{sec:experiments}