beamer：包括作者姓名 + 所属机构（不同作者不同）+ 作者照片

Question

我希望有一个标题页，其中包含标题、日期、作者姓名、所属机构（它们并不完全相同）以及每位作者的照片（除了我，演讲者）——也就是四张照片。我该如何实现这些？我有以下 MWE，它满足除图片要求之外的所有要求。

\documentclass{beamer}

\mode<presentation>
{
  \usetheme{default}      % or try Darmstadt, Madrid, Warsaw, ...
  \usecolortheme{rose} % or try albatross, beaver, crane, ...
  \usefonttheme{default}  % or try serif, structurebold, ...
  \setbeamertemplate{navigation symbols}{}
  \setbeamertemplate{caption}[numbered]
} 
\usepackage{collcell} %pdflatex.exe hangs without this one
\usepackage[customcolors,beamer]{hf-tikz} %for beautiful inline highlighted math. Thanks Claudio! 

\AtBeginSection[]{
  \begin{frame}
  \vfill
  \centering
  \begin{beamercolorbox}[sep=8pt,center,shadow=true,rounded=true]{title}
    \usebeamerfont{title}\insertsectionhead\par%
  \end{beamercolorbox}
  \vfill
  \end{frame}
}

\newcommand\fiteq[1]{%
  \sbox{\mybox}{$\displaystyle#1$}%
  \ifdim\wd\mybox>.85\textwidth\resizebox{.85\textwidth}{!}{\usebox{\mybox}}%
  \else\usebox{\mybox}\fi%
}
\title{My title: \\
and here is the subtitle}
\date{today's date}
\author{A1\inst{1}, A2\inst{2}, A3\inst{3}, A4\inst{2}, and A5\inst{1}}
\institute{\inst{1} fancy university 1 \and \inst{2} not-so-fancy university 2 \and \inst{3} dream-place-to-work-at}%\setbeamercolor{normal text}{fg=myblue}

%% start1
\begin{document}
  \titlepage

\end{document}

Answer 1

像这样？

\documentclass{beamer}

\mode<presentation>
{
  \usetheme{default}      % or try Darmstadt, Madrid, Warsaw, ...
  \usecolortheme{rose} % or try albatross, beaver, crane, ...
  \usefonttheme{default}  % or try serif, structurebold, ...
  \setbeamertemplate{navigation symbols}{}
  \setbeamertemplate{caption}[numbered]
}
\usepackage{collcell} %pdflatex.exe hangs without this one
\usepackage[customcolors,beamer]{hf-tikz} %for beautiful inline highlighted math. Thanks Claudio!

\AtBeginSection[]{
  \begin{frame}
  \vfill
  \centering
  \begin{beamercolorbox}[sep=8pt,center,shadow=true,rounded=true]{title}
    \usebeamerfont{title}\insertsectionhead\par%
  \end{beamercolorbox}
  \vfill
  \end{frame}
}

\newcommand\fiteq[1]{%
  \sbox{\mybox}{$\displaystyle#1$}%
  \ifdim\wd\mybox>.85\textwidth\resizebox{.85\textwidth}{!}{\usebox{\mybox}}%
  \else\usebox{\mybox}\fi%
}
\title{My title: \\
and here is the subtitle}
\date{today's date}
\author{
A1\inst{1},  \parbox[t]{22mm}{\centering    A2\inst{2},  
                           \includegraphics[width=15mm]{example-image-duck}}
             \parbox[t]{22mm}{\centering   A3\inst{3},
                           \includegraphics[width=15mm]{example-image-duck}}
             \parbox[t]{22mm}{\centering   A4\inst{2},
                           \includegraphics[width=15mm]{example-image-duck}}
             \parbox[t]{22mm}{\centering   A5\inst{1}
                           \includegraphics[width=15mm]{example-image-duck}}
    }
\institute{\inst{1} fancy university 1 \and \inst{2} not-so-fancy university 2 \and \inst{3} dream-place-to-work-at}%\setbeamercolor{normal text}{fg=myblue}


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

附录：*

正如您在下面的评论中所要求的：

\documentclass{beamer}
\usepackage[export]{adjustbox} %pdflatex.exe hangs without this one

\title{My title: \\
and here is the subtitle}
\date{\today}
\author{\setkeys{Gin}{width=15mm}
A1\inst{1}  \\[2ex]
\parbox{.45\linewidth}{Short Name\inst{2}\hfill
               \includegraphics[valign=c]{example-image-duck}}\hfill
\parbox{.45\linewidth}{A. B. Name3\inst{3}\hfill
               \includegraphics[valign=c]{example-image-duck}} \\[2ex]
\parbox{.45\linewidth}{Forename Lastname\inst{2}\hfill
               \includegraphics[valign=c]{example-image-duck}}\hfill
\parbox{.45\linewidth}{My name is Long\inst{1}\hfill
               \includegraphics[valign=c]{example-image-duck}}
    }
\institute{\inst{1} fancy university 1 \and \inst{2} not-so-fancy university 2 \and \inst{3} dream-place-to-work-at}%\setbeamercolor{normal text}{fg=myblue}

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

（上面的 MWE 删除了所有与您的问题无关的定义和包）

还有一个补充：

\documentclass{beamer}

\title{My title}
\subtitle{here is the subtitle}
\date{\today}
\author{
A1\inst{1}, Short Name\inst{2}, A. B. Name3\inst{3}, Forename Lastname\inst{2} and My name is Long\inst{1}
    }
\institute{\inst{1} fancy university 1, \inst{2} not-so-fancy university 2, \inst{3} dream-place-to-work-at}%\setbeamercolor{normal text}{fg=myblue}

\begin{document}
\begin{frame}
    \titlepage
\vfill
\centering
\setkeys{Gin}{width=15mm}
\includegraphics{example-image-duck}\hfil
\includegraphics{example-image-duck}\hfil
\includegraphics{example-image-duck}\hfil
\includegraphics{example-image-duck}
\end{frame}
\end{document}

希望现在有足够的例子来说明如何格式化演示文稿的标题框。