How to position images as a grid in a page

Question

I was trying to position images as shown in the figure in LaTeX, need help.

Answer 1

You can make use of the subcaption package and arrange the images using a tabluar. The following may be a starting point. It is not exactly semantically correct though, because from your example it seems that both, Image and Residual, should belong to the same subfigure.

\documentclass{article}
\usepackage{graphicx}
\usepackage{subcaption}
\newlength{\subfigwidth}
\setlength{\subfigwidth}{20mm}
\begin{document}
\begin{figure}
\caption{Image type}
\centering
\begin{tabular}{r p{\subfigwidth} p{\subfigwidth} p{\subfigwidth} p{\subfigwidth}}
Image & 
\begin{subfigure}[b]{\subfigwidth}
    \caption{I32}
    \includegraphics[width=\subfigwidth]{example-image-a}
\end{subfigure} &
\begin{subfigure}[b]{\subfigwidth}
    \caption{DIP TV}
    \includegraphics[width=\subfigwidth]{example-image-a}
\end{subfigure} &
\begin{subfigure}[b]{\subfigwidth}
    \caption{DIP}
    \includegraphics[width=\subfigwidth]{example-image-a}
\end{subfigure} &
\begin{subfigure}[b]{\subfigwidth}
    \caption{sst}
    \includegraphics[width=\subfigwidth]{example-image-a}
\end{subfigure} \
Residual & 
\includegraphics[width=\subfigwidth]{example-image-b} &
\includegraphics[width=\subfigwidth]{example-image-b} &
\includegraphics[width=\subfigwidth]{example-image-b} &
\includegraphics[width=\subfigwidth]{example-image-b}
\end{tabular}
\begin{tabular}{r p{\subfigwidth} p{\subfigwidth} p{\subfigwidth} p{\subfigwidth}}
Image & 
\begin{subfigure}[b]{\subfigwidth}
    \caption{gst}
    \includegraphics[width=\subfigwidth]{example-image-c}
\end{subfigure} &
\begin{subfigure}[b]{\subfigwidth}
    \caption{est}
    \includegraphics[width=\subfigwidth]{example-image-c}
\end{subfigure} &
\begin{subfigure}[b]{\subfigwidth}
    \caption{mst}
    \includegraphics[width=\subfigwidth]{example-image-c}
\end{subfigure} &
\begin{subfigure}[b]{\subfigwidth}
    \caption{est}
    \includegraphics[width=\subfigwidth]{example-image-c}
\end{subfigure} \
Residual & 
\includegraphics[width=\subfigwidth]{example-image-a} &
\includegraphics[width=\subfigwidth]{example-image-a} &
\includegraphics[width=\subfigwidth]{example-image-a} &
\includegraphics[width=\subfigwidth]{example-image-a}
\end{tabular}
\end{figure}
\end{document}