如何使用默认的 Beamer 主题插入脚注

Question

我已将\title和插入\author到 latex 序言中，以便在海报末尾的脚注中显示。使用时，\usepackage{beamerthemedefault}脚注不会显示。如何使用默认的 beamer 主题显示此脚注？

\documentclass[10pt,english,final]{beamer}
\makeatletter
\usepackage{beamerthemedefault}
\usecolortheme{default}
\usepackage{graphicx}
\usepackage[orientation=portrait,size=a0,scale=1.4,debug]{beamerposter}

\title{Research Report Poster STK795}
\author{AUTHOR HERE \\ Department University}
\date{15 October 2016}
\usepackage{mwe} % just for dummy images
\usebackgroundtemplate%
{%
     \includegraphics[width=\paperwidth,height=\paperheight]{example-image}%
}

\makeatother

\begin{document}
\begin{frame}{}
\end{frame}
\end{document}

底部的脚注线应如下：

Answer 1

您可以通过设置相应的投影仪模板来恢复脚线：

\documentclass[10pt,english,final]{beamer}
\usepackage{beamerthemedefault}
\usecolortheme{default}
\usepackage[orientation=portrait,size=a0,scale=1.4,debug]{beamerposter}

\title{Research Report Poster STK795}
\author{AUTHOR HERE}
\institute{Department University}
\date{15 October 2016}
\usepackage{mwe} % just for dummy images
\usebackgroundtemplate%
{%
     \includegraphics[width=\paperwidth,height=\paperheight]{example-image}%
}

\setbeamercolor{author in head/foot}{bg=blue, fg=white}
\setbeamercolor{title in head/foot}{bg=blue!50!black, fg=white}
\setbeamercolor{institute in head/foot}{fg=white}

% slightly modified from beamerouterthememiniframes.sty
\setbeamertemplate{footline}{%
    \begin{beamercolorbox}[colsep=1.5pt]{upper separation line foot}
    \end{beamercolorbox}
    \begin{beamercolorbox}[ht=2.5ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{author in head/foot}%
      \leavevmode{\usebeamerfont{author in head/foot}\insertshortauthor}%
      \space%
%      \hfill%
      {\usebeamerfont{institute in head/foot}\usebeamercolor[fg]{institute in head/foot}\insertshortinstitute}%
    \end{beamercolorbox}%
    \begin{beamercolorbox}[ht=2.5ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{title in head/foot}%
      {\usebeamerfont{title in head/foot}\insertshorttitle}%
    \end{beamercolorbox}%
    \begin{beamercolorbox}[colsep=1.5pt]{lower separation line foot}
    \end{beamercolorbox}
}


\begin{document}
\begin{frame}{}
bla
\end{frame}
\end{document}