documentclass{beamer}
usepackage{multirow}
begin{document}
  begin{frame}
    begin{tabular}{|*{4}{c|}} hline
      & & & \hline
      multirow{3}*{includegraphics[width=.2textwidth]{example-image-golden-upright}} &   includegraphics[width=.2textwidth]{example-image-a} & includegraphics[width=.2textwidth]{example-image-a} & hspace*{.205textwidth}\cline{2-3}
      & includegraphics[width=.2textwidth]{example-image-a} & includegraphics[width=.2textwidth]{example-image-a} & \cline{2-3}
      & includegraphics[width=.2textwidth]{example-image-a} & includegraphics[width=.2textwidth]{example-image-a} & \hline
    end{tabular}
  end{frame}
end{document}