Vertical alignment of subfigures LATEX

Question

Hi, I am working on my thesis and I am struggling with placing 2 images next to each other, so that the second image would be centered vertically along the first one. I was also trying to use subfigure instead of subfloat but neither of them works.

This is how it looks

and my code is:

\begin{figure}[H]
\centering  \subfloat[H][sparse($\mathbf{A}$)]{\includegraphics[width=0.28\textwidth]{sparsesmall} \label{sparse}}
    \subfloat[H][full($\mathbf{A}$)]{\includegraphics[width=0.55\textwidth]{fullsmall}\label{full}}
  \caption{Representation of $\mathbf{A}$ in MATLAB}
  \label{schematic}
\end{figure}

Any suggestions to make it look better than now? Thx

Answer 1

If you use subfig package, you can do this easily. The solution is in section 5.4 of the manual:

\newsavebox{\tempbox}
\begin{figure}[H]
\sbox{\tempbox}{\includegraphics[width=0.28\textwidth]{sparsesmall}}
\subfloat[sparse($\mathbf{A}$)]{\usebox{\tempbox}\label{sparse}}%
\qquad
\subfloat[full($\mathbf{A}$)]{\vbox to \ht\tempbox{%
  \vfil
  \includegraphics[width=0.55\textwidth]{fullsmall}
  \vfil}\label{full}}%
  \caption{Representation of $\mathbf{A}$ in MATLAB}\label{schematic}
\end{figure}

I haven't tested it, and there may be typos, but it should work.

Answer 2

You can also use \raisebox{x}{\includegraphics[...]{...}} where x is negative to shift it downwards and positive to shift upwards.