# How to add a caption to a picture which already fills out the whole frame?

In my slideshow, I have a picture which needs a caption but for better looking I want it to be in the original ratio. Therefore the size of the image is defined as width=\pagewidth and height=\pageheight. How do I add a caption which is shown on the image itself, for example in the upper right corner.

MMW of the frame with the image

\documentclass[aspectratio=169]{beamer}
\usepackage{media9}
\usepackage{graphicx}
\usepackage{graphics}
\usepackage{tikz}
\usetheme{default}
\usetikzlibrary{calc}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% absolute positioning of typeset material
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\placetextbox}[4][center]{%
% [#1]: box anchor: center (default) |
%                 south west | west | north west | north |
%                 north east | east | south east | south |
%                 mid west | mid | mid east |
%                 base west | base | base east
% #2: horizontal position (fraction of page width)
% #3: vertical position (fraction of page height)
% #4: content
%
\tikz[remember picture,overlay,x=\paperwidth,y=\paperheight]{%
\node[anchor=#1,inner sep=0pt]
at ($(current page.south west)+(#2,#3)$) {#4};
}%
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usecolortheme{wolverine}
\begin{frame}{}
\placetextbox[south]{0.5}{0}{\includegraphics[width=\paperwidth,height=\paperheight]{IMG_7917.jpg}}
\end{frame}
\end{document}

• If you want to use an actual caption (\captionof{figure}), put it inside a minipage {\linewidth}. The height adjustment is a bit trickier since bearmer doesn't know how bit the trame is until later. Apr 25 '19 at 14:38

Something like this?

\documentclass[aspectratio=169]{beamer}
\usepackage{tikz}
\usetheme{default}
\usetikzlibrary{calc}
\usecolortheme{wolverine}
\begin{document}
\begin{frame}{}
\begin{tikzpicture}[overlay,remember picture]
\node at (current page.center){\includegraphics[width=\paperwidth,height=\paperheight]{example-image-duck}};
\node[anchor=north east] at (current page.north east){Some text about ducks.};
\end{tikzpicture}
\end{frame}
\end{document}


• Any way to center the text? Apr 25 '19 at 13:43
• @mugdi \node at (current page.center){Some text about ducks.}; or \node[anchor=north] at (current page.north){Some text about ducks.};.
– user121799
Apr 25 '19 at 13:58