\documentclass[18pt]{beamer}
\usetheme{Madrid}

\usepackage{graphics}


\newcommand{\centeredlargetext}[3]{
{
\setbeamertemplate{navigation symbols}{}
\setbeamercolor{background canvas}{bg={#1}}
\color{#2}
\begin{frame}[plain]
\fontsize{36pt}{36pt}\selectfont
\center
\begin{center}
{#3}
\end{center}
\end{frame}
}}

\newcommand{\centeredhugetext}[3]{
{
\setbeamertemplate{navigation symbols}{}
\setbeamercolor{background canvas}{bg={#1}}
\fontsize{72pt}{72pt}\selectfont
\color{#2}
\begin{frame}[plain]
\center
\begin{center}
{#3}
\end{center}
\end{frame}
}}


\begin{document}

\title[SimpleITK Tutorial]{SimpleITK - Short Tutorial}
\subtitle[UH]{ITK for Human Beings}
\institute[Insight Software Consortium]{Insight Software Consortium}
\date[April 2011]{April 2011}

\begin{frame}
\titlepage
\end{frame}


{
\setbeamertemplate{navigation symbols}{}
\begin{frame}[plain]
\center
\begin{center}
This presentation is copyrighted by\\
The \textbf{Insight Software Consortium}\\
\bigskip
distributed under the\\
\textbf{Creative Commons by Attribution License 3.0}\\
\url{http://creativecommons.org/licenses/by/3.0}\\
\bigskip
Images used in this presentation are attributed in the last slide.
\end{center}
\end{frame}
}


\begin{frame}
  \tableofcontents
\end{frame}


\centeredlargetext{black}{white}{
SimpleITK
}


\section{Introduction}

\end{document}
