\documentclass{article}
\usepackage{graphicx}
\setkeys{Gin}{width=4cm}
\DeclareGraphicsExtensions{{.ps}}
\DeclareGraphicsRule{.ps.gz}{eps}{.ps.bb}{}
\begin{document}
\section{Commande \texttt{\char92 includegraphics}}
\begin{center}
\includegraphics{HF}
\end{center}
\includegraphics{HF.ps.gz}

\includegraphics*[draft, width=2cm]{HF.ps}


\section{Rotations}
\rotatebox[origin=c]{45}{\scalebox{.5}{\includegraphics{HF.ps}}}
\newcommand{\monrot}[3][]{\rotatebox[#1]{#2}{#3}}
\monrot[origin=b]{135}{\scalebox{.5}{\includegraphics{HF.ps}}}
\monrot{135}{\scalebox{.5}{\includegraphics{HF.ps}}}


\end{document}
