LaTeX 脚本将多幅图像拼贴成一幅图

Question

我正在寻找一种方法，将多幅图像平铺到 LaTeX 中的单个图形中。

我目前有下面的代码，当图像很好地适合网格时，它可以工作

\documentclass[11pt]{article}

\usepackage{graphicx}
\usepackage{subcaption}
\usepackage{overpic}
\usepackage{xcolor}

\DeclareCaptionLabelFormat{bold}{\textbf{(#2)}}
\captionsetup{subrefformat=bold}
\renewcommand{\thesubfigure}{\Alph{subfigure}}

\begin{document}

% Sub-Figure Example
\begin{figure}[!htp]
\centering
\captionsetup{width=.9\textwidth}

% Figure row 1
\begin{subfigure}{0.3\textwidth}
  \centering
  \begin{overpic}[percent,width=\textwidth]{coffee.jpg}
    \put (5,40) {\color{white} A}
  \end{overpic}
  \phantomsubcaption\label{fig:a}
\end{subfigure}%
\begin{subfigure}{0.3\textwidth}
  \centering
  \begin{overpic}[percent,width=\textwidth]{coffee.jpg}
    \put (5,40) {\color{white} B}
  \end{overpic}
  \phantomsubcaption\label{fig:b}
\end{subfigure}%
\begin{subfigure}{0.3\textwidth}
  \centering
  \begin{overpic}[percent,width=\textwidth]{coffee.jpg}
    \put (5,40) {\color{white} C}
  \end{overpic}
  \phantomsubcaption\label{fig:c}
\end{subfigure}

\vspace{-\baselineskip}

\begin{subfigure}{0.9\textwidth}
  \centering
  \begin{overpic}[percent,width=\textwidth]{coffee.jpg}
    \put (1.5,48) {\color{white} D}
  \end{overpic}
  \phantomsubcaption\label{fig:d}
\end{subfigure}

\vspace{-\baselineskip}

\caption{This is a figure. \subref{fig:a} This is a cup of coffee. 
  \subref{fig:b} This is another cup of coffee. \subref{fig:c} This is more coffee.  
  \subref{fig:d} This is a big cup of coffee.}
\label{fig:coffee3}

\end{figure}


\end{document}

然而，当图像需要跨列时，这似乎不起作用。例如当一张或多张图像的方向不同时。它还假设所有图像都具有相同的纵横比。

例如

\documentclass[11pt]{article}

\usepackage{graphicx}
\usepackage{subcaption}
\usepackage{overpic}
\usepackage{xcolor}

\DeclareCaptionLabelFormat{bold}{\textbf{(#2)}}
\captionsetup{subrefformat=bold}
\renewcommand{\thesubfigure}{\Alph{subfigure}}

\begin{document}

% Sub-Figure Example
\begin{figure}[!htp]
\centering
\captionsetup{width=.9\textwidth}

% Figure row 1
\begin{subfigure}{0.3\textwidth}
  \centering
  \begin{overpic}[abs,unit=1mm,width=\textwidth]{example-image}
    \put (3,23) {\color{white} A}
  \end{overpic}
  \phantomsubcaption\label{fig:a}
\end{subfigure}%
\begin{subfigure}{0.3\textwidth}
  \centering
  \begin{overpic}[abs,unit=1mm,width=\textwidth]{example-image}
    \put (3,23) {\color{white} B}
  \end{overpic}
  \phantomsubcaption\label{fig:b}
\end{subfigure}%
\begin{subfigure}{0.3\textwidth}
  \centering
  \begin{overpic}[abs,unit=1mm,width=\textwidth,angle=90]{example-image}
    \put (3,23) {\color{white} C}
  \end{overpic}
  \phantomsubcaption\label{fig:c}
\end{subfigure}

\vspace{-\baselineskip}

\begin{subfigure}{0.9\textwidth}
  \centering
  \begin{overpic}[abs,unit=1mm,width=\textwidth]{example-image}
    \put (3,80) {\color{white} D}
  \end{overpic}
  \phantomsubcaption\label{fig:d}
\end{subfigure}

\vspace{-\baselineskip}

\caption{This is a figure caption \subref{fig:a} This is a subfigure. 
  \subref{fig:b} This is another subfigure. \subref{fig:c} This is yet another subfigure.  
  \subref{fig:d} This is a big subfigure.}
\label{fig:coffee3}

\end{figure}


\end{document}