% 0.75 is distance below figure, 0.45 is % filled horizontally, width=1 is scale of image
\begin{figure}
   \subfloat[Crop Parcels and Legal Parcels]{
	\begin{minipage}[c][0.75\width]{
	   0.45\textwidth}
	   \centering
	   \includegraphics[width=1\textwidth]{pre_proc.png}
	\end{minipage}}
 \hfill
  \subfloat[Intersection of Parcels]{
	\begin{minipage}[c][0.75\width]{
	   0.45\textwidth}
	   \centering
	   \includegraphics[width=1\textwidth]{post_proc.png}
	\end{minipage}}
\caption{Example of parcel overlap procedure}\label{compare}
\end{figure}