\begin{figure}[!h]
\begin{center}
\includegraphics[width=3in]{figures/canopies.png}
\end{center}
\caption[Canopies in 2-Dimensions]{The darker circle represents all points in a given canopy,
points in the smaller circles cannot be used as a new canopy center.}
\label{fig:canopies}
\end{figure}

