在tex中重叠图像

overlap-img.tex

\documentclass{beamer}
\usepackage{tikz}   
\begin{document}

\begin{frame}
\begin{center}
\begin{tikzpicture}
  \node (img1) {\includegraphics[height=3cm]{img0.jpg}};
  \pause
  \node (img2) at (img1.south west)[yshift=1.4cm,xshift=1.4cm] {\includegraphics[height=3cm]{img1.jpg}};
  \pause
  \node (img3) at (img2.south west) [yshift=1.4cm,xshift=1.4cm] {\includegraphics[height=3cm]{img2.jpg}};
   \pause
  \node (img4) at (img3.south west) [yshift=1.4cm,xshift=1.4cm] {\includegraphics[height=3cm]{img3.jpg}};
\end{tikzpicture}
\end{center}
\end{frame}

\end{document}