Compression algorithms. 

\subsection{n-th point algorithm}

\subsection{Random-point routine}

\subsection{Radial distance algorithm}

\subsection{Perpendicular distance algorithm}

\subsection{Reumann-Witkam simplification}

\subsection{Opheim simplification}

\subsection{Lang simplification}

\subsection{Douglas-Peucker simplification}

\subsubsection{with reduction parameter}

\subsection{Jenks simplification}

\subsection{Visvalingam-Whyatt simplification}

\subsection{Zhao-Saalfeld simplification}

\subsection{Summary}