\begin{figure}[h!]
\centering
-\includegraphics[scale=0.8]{Figures/ch2/GAF1.jpeg}
+\includegraphics[scale=0.4]{Figures/ch2/GAF1.eps}
\caption{ Example of fixed square grid in GAF.}
\label{gaf1}
\end{figure}
\begin{figure}[h!]
\centering
-\includegraphics[scale=0.8]{Figures/ch2/GAF2.jpeg}
+\includegraphics[scale=0.4]{Figures/ch2/GAF2.eps}
\caption{ Example of fixed square grid in GAF.}
\label{gaf2}
\end{figure}