Graphics, Figures & Tables ⇒ Using figures in an equation?

[Spacecookies]

Hi all,

LaTeX newbie here. For a paper I'm writing, I'd like to make a figure that combines images and math. I haven't been able to find an example of this, so I've tried to roll my own:

Code: Select all

\begin{figure}[htb]
  \centering
  \[
  Min\left(
  \includegraphics[width=.25\linewidth]{figures/fig_inputX}
  ,
  \includegraphics[width=.25\linewidth]{figures/fig_inputY}
  \right) = 
  \includegraphics[width=.25\linewidth]{figures/fig_output}
  \]
  \caption{\label{fig:fig_image_equation}
  This figure shows a function that takes 2 images as arguments, and returns an image.}
\end{figure}

To my surprise, it almost works (see attached), but the formatting needs some help. How can I get rid of that unnecessary whitespace below the images, and center everything vertically?

Thanks for any help!

[Stefan Kottwitz]

Hi,

you could use \raisebox, like

Code: Select all

\begin{figure}[htb]
  \centering
  \[
  Min\left(
  \raisebox{-50pt}{\includegraphics[width=.25\linewidth]{figures/fig_inputX}}
  ,
  \raisebox{-50pt}{\includegraphics[width=.25\linewidth]{figures/fig_inputY}}
  \right) =
  \raisebox{-50pt}{\includegraphics[width=.25\linewidth]{figures/fig_output}}
  \]
  \caption{\label{fig:fig_image_equation}
  This figure shows a function that takes 2 images as arguments, and returns an image.}
\end{figure}

Stefan

[Spacecookies]

Okay, interesting suggestion. I'll try that one.

I came up with this, which is almost what I want:

Code: Select all

\begin{figure}[htb]
  \centering
  \[
  Min\left(
  \begin{minipage}[h]{0.25\linewidth}
	\vspace{0pt}
	\includegraphics[width=\linewidth]{figures/fig_inputX}
   \end{minipage}
   , 
  \begin{minipage}[h]{0.25\linewidth}
	\vspace{0pt}
	\includegraphics[width=\linewidth]{figures/fig_inputY}
   \end{minipage}
  \right) = 
  \begin{minipage}[h]{0.25\linewidth}
	\vspace{0pt}
	\includegraphics[width=\linewidth]{figures/fig_output}
   \end{minipage}
  \]
  \caption{\label{fig:fig_image_equation}
  This figure shows a function that takes 2 images as arguments, and returns an image.}
\end{figure}

I'd like the brackets to be a little bigger than the images though. They sort of blend together currently I think (see attached).

Thanks

[Stefan Kottwitz]

Further you could use \parbox to put the images into a bigger box.

Stefan

[Spacecookies]

Awesome. Thanks for you help! Parbox is exactly what I wanted.

This is what I've settled on, for anyone else who's interested:

Code: Select all

\begin{figure}[htb]
  \centering
  \[
  Min\left(
  \parbox[h][0.30\linewidth][c]{0.25\linewidth}{
	\includegraphics[width=\linewidth]{figures/fig_inputX}
   }
   \;,\;
  \parbox[h][0.30\linewidth][c]{0.25\linewidth}{
	\includegraphics[width=\linewidth]{figures/fig_inputY}
   }
  \right) = 
  \parbox[h][0.30\linewidth][c]{0.25\linewidth}{
	\includegraphics[width=\linewidth]{figures/fig_output}
   }
  \]
  \caption{\label{fig:fig_image_equation}
  This figure shows a function that takes 2 images as arguments, and returns an image.}
\end{figure}

[Stefan Kottwitz]

Fine!

By the way, in general if a problem is solved it would be nice to mark the topic as "solved". This can be done by editing the first post and choosing the checkmark as topic icon.

Stefan

[localghost]

Just a remark. The \parbox command doesn't accept the parameter »h« as alignment option.


Best regards and welcome to the board
Thorsten

[Spacecookies]

The \parbox command doesn't accept the parameter »h« as alignment option.

Ah, good to know. I'll change that.

Thanks!