# Putting a graphic in the background of the title line of poster?

I am using the beamerposter.sty file to make my poster and I want to put a background in the title section of the poster- not a graphic or logo of an institution, but an actual background that spans the entire length of the poster title.

I have been searching but I can't seem to find anything that specifically addresses this issue. I have the eso-pic, background, and wallpaper packages so if you can provide a solution with any of those I'd be grateful. Here is an example of what I mean to accomplish

Here is the skeleton of my poster

\documentclass[final]{beamer}
\usepackage[scale = 1]{beamerposter}
\usepackage{empheq}
%--------------------------------------------------------------------------------------------
\usetheme{confposter}
\setbeamercolor{block title}{fg=black,bg=white} % Colors of the block titles
\setbeamercolor{block body}{fg=black,bg=white} % Colors of the body of blocks
\setbeamercolor{block alerted title}{fg=white,bg=dblue!53} % Colors of the highlighted block titles
\setbeamercolor{block alerted body}{fg=black,bg=dblue!11} % Colors of the body of highlighted blocks
%---------------------------------------------------------------------------------------------
% Define the column widths and overall poster size
% To set effective sepwid, onecolwid and twocolwid values, first choose how many columns you want and how much separation you want between columns
% In this template, the separation width chosen is 0.024 of the paper width and a 4-column layout
% onecolwid should therefore be (1-(# of columns+1)*sepwid)/# of columns e.g. (1-(4+1)*0.024)/4 = 0.22
% Set twocolwid to be (2*onecolwid)+sepwid = 0.464
% Set threecolwid to be (3*onecolwid)+2*sepwid = 0.708
%----------------------------------------------------------------------------------------------
\newlength{\sepwid}
\newlength{\onecolwid}
\newlength{\twocolwid}
\newlength{\threecolwid}
\setlength{\fboxsep}{0pt}%
\setlength{\fboxrule}{1pt}%
\setlength{\paperwidth}{48in} % A0 width: 46.8in
\setlength{\paperheight}{36in} % A0 height: 33.1in
\setlength{\sepwid}{0.024\paperwidth} % Separation width (white space) between columns
\setlength{\onecolwid}{0.22\paperwidth} % Width of one column
\setlength{\twocolwid}{0.464\paperwidth} % Width of two columns
\setlength{\threecolwid}{0.708\paperwidth} % Width of three columns
\setlength{\topmargin}{-0.5in} % Reduce the top margin size
\newcommand*\widefcolorbox[1]{\setlength\fboxrule{0.8pt}\fcolorbox{Black}{dblue!10}{\hspace{1em}#1\hspace{1em}}}
\newcommand{\ip}{\hfill\\}
%--------------------------------------------------------------------------------------------
\usepackage{graphicx}  % Required for including images
\usepackage{booktabs} % Top and bottom rules for tables
%--------------------------------------------------------------------------------------------
\title{Title} % Poster title

\author{a \inst{1} \and b \inst{1}  \and c\inst{1} \inst{2} \and d\inst{1}} % Author(s)

\institute{\inst{1} University \and \inst{2} Other University}

\begin{document}
\addtobeamertemplate{block end}{}{\vspace*{0.5ex}} % White space under blocks
\setlength{\belowcaptionskip}{0.5ex} % White space under figures
\setlength\belowdisplayshortskip{2ex} % White space under equations
\begin{frame}[t] % The whole poster is enclosed in one beamer frame
\begin{columns}[t] % The whole poster consists of three major columns, the second of which is split into two columns twice - the [t] option aligns each column's content to the top
\begin{column}{\sepwid}\end{column} % Empty spacer column
\begin{column}{\onecolwid} % The first column
\begin{block}{Abstract}
\end{block}
\begin{block}{Introduction}
\end{block}
\begin{block}{Compound and Substrate}
\end{block}
\end{column} % End of the first column
\begin{column}{\sepwid}\end{column}
\begin{column}{\twocolwid} % Begin a column which is two columns wide (column 2)
\begin{columns}[t,totalwidth=\twocolwid] % Split up the two columns wide column
\begin{column}{\onecolwid}\vspace{-.6in} % The first column within column 2 (column 2.1)
\begin{block}{Compound and Substrate}
\end{block}
\begin{block}{Experimental Set-up}
\end{block}
\begin{block}{Results and Analysis}
\end{block}
\end{column} % End of column 2.1
\begin{column}{\onecolwid}\vspace{-.6in} % The second column within column 2 (column 2.2)
\begin{column}{\sepwid}\end{column}
\begin{block}{Results and Analysis}
\end{block}
\end{column} % End of column 2.2
\end{columns} % End of the split of column 2 - any content after this will now take up 2 columns width
\end{column} % End of the second column
\begin{column}{\sepwid}\end{column}
\begin{column}{\onecolwid} % The third column
\begin{block}{Conclusion}
\end{block}
\begin{block}{References}
\end{block}
\setbeamercolor{block title}{fg=dblue,bg=white} % Change the block title color
\begin{block}{Acknowledgments}
\end{block}
\end{column} % End of the third column
\end{columns} % End of all the columns in the poster
\end{frame} % End of the enclosing frame
\end{document}


I do not intend on using the provided picture but the idea is identical.

Perhaps you will be satisfied with this solution. I just modified the header definition from the confposter package. I don't know how to determine the real height of the title, so it will be necessary to manually adjust the size of the background picture. Besides, I'm not familiar with tikz package and I assume that there may be a better solution. I used "scope fading" to improve the transition to poster text. It has a side effect: this option reduce the width of the picture. Therefore, I added the parameter "scale=1.01". "fig" is the name of any picture for the header background.

\documentclass[final]{beamer}
\usepackage[scale = 1]{beamerposter}
\usepackage{empheq}
%--------------------------------------------------------------------------------------------
\usetheme{confposter}

\begin{tikzpicture}[remember picture,overlay]
\node[scale=1.01, opacity=0.99, xshift=0cm, yshift=-5.5cm,scope fading=south] at (current page.north){\pgfimage[width=\paperwidth,height=11cm]{fig}};
\end{tikzpicture}
\leavevmode
\begin{columns}
\begin{column}{\linewidth}
\vskip1cm
\centering
\vskip1cm
\end{column}
\vspace{1cm}
\end{columns}
\vspace{0.5in}
\hspace{0.5in}\begin{beamercolorbox}[wd=47in,colsep=0.15cm]{cboxb}\end{beamercolorbox}
\vspace{0.1in}
}
% end of VAK definition

\setbeamercolor{block title}{fg=black,bg=white} % Colors of the block titles
\setbeamercolor{block body}{fg=black,bg=white} % Colors of the body of blocks
\setbeamercolor{block alerted title}{fg=white,bg=dblue!53} % Colors of the highlighted block titles
\setbeamercolor{block alerted body}{fg=black,bg=dblue!11} % Colors of the body of highlighted blocks
%---------------------------------------------------------------------------------------------
% Define the column widths and overall poster size
% To set effective sepwid, onecolwid and twocolwid values, first choose how many columns you want and how much separation you want between columns
% In this template, the separation width chosen is 0.024 of the paper width and a 4-column layout
% onecolwid should therefore be (1-(# of columns+1)*sepwid)/# of columns e.g. (1-(4+1)*0.024)/4 = 0.22
% Set twocolwid to be (2*onecolwid)+sepwid = 0.464
% Set threecolwid to be (3*onecolwid)+2*sepwid = 0.708
%----------------------------------------------------------------------------------------------
\newlength{\sepwid}
\newlength{\onecolwid}
\newlength{\twocolwid}
\newlength{\threecolwid}
\setlength{\fboxsep}{0pt}%
\setlength{\fboxrule}{1pt}%
\setlength{\paperwidth}{48in} % A0 width: 46.8in
\setlength{\paperheight}{36in} % A0 height: 33.1in
\setlength{\sepwid}{0.024\paperwidth} % Separation width (white space) between columns
\setlength{\onecolwid}{0.22\paperwidth} % Width of one column
\setlength{\twocolwid}{0.464\paperwidth} % Width of two columns
\setlength{\threecolwid}{0.708\paperwidth} % Width of three columns
\setlength{\topmargin}{-0.5in} % Reduce the top margin size
\newcommand*\widefcolorbox[1]{\setlength\fboxrule{0.8pt}\fcolorbox{Black}{dblue!10}{\hspace{1em}#1\hspace{1em}}}
\newcommand{\ip}{\hfill\\}
%--------------------------------------------------------------------------------------------
\usepackage{graphicx}  % Required for including images
\usepackage{booktabs} % Top and bottom rules for tables
%--------------------------------------------------------------------------------------------
\title{Some Title} % Poster title

\author{a \inst{1} \and b \inst{1}  \and c\inst{1} \inst{2} \and d\inst{1}} % Author(s)

\institute{\inst{1} University \and \inst{2} Other University}

\begin{document}
\addtobeamertemplate{block end}{}{\vspace*{0.5ex}} % White space under blocks
\setlength{\belowcaptionskip}{0.5ex} % White space under figures
\setlength\belowdisplayshortskip{2ex} % White space under equations
\begin{frame}[t] % The whole poster is enclosed in one beamer frame
\begin{columns}[t] % The whole poster consists of three major columns, the second of which is split into two columns twice - the [t] option aligns each column's content to the top
\begin{column}{\sepwid}\end{column} % Empty spacer column
\begin{column}{\onecolwid} % The first column
\begin{block}{Abstract}
\end{block}
\begin{block}{Introduction}
\end{block}
\begin{block}{Compound and Substrate}
\end{block}
\end{column} % End of the first column
\begin{column}{\sepwid}\end{column}
\begin{column}{\twocolwid} % Begin a column which is two columns wide (column 2)
\begin{columns}[t,totalwidth=\twocolwid] % Split up the two columns wide column
\begin{column}{\onecolwid}\vspace{-.6in} % The first column within column 2 (column 2.1)
\begin{block}{Compound and Substrate}
\end{block}
\begin{block}{Experimental Set-up}
\end{block}
\begin{block}{Results and Analysis}
\end{block}
\end{column} % End of column 2.1
\begin{column}{\onecolwid}\vspace{-.6in} % The second column within column 2 (column 2.2)
\begin{column}{\sepwid}\end{column}
\begin{block}{Results and Analysis}
\end{block}
\end{column} % End of column 2.2
\end{columns} % End of the split of column 2 - any content after this will now take up 2 columns width
\end{column} % End of the second column
\begin{column}{\sepwid}\end{column}
\begin{column}{\onecolwid} % The third column
\begin{block}{Conclusion}
\end{block}
\begin{block}{References}
\end{block}
\setbeamercolor{block title}{fg=dblue,bg=white} % Change the block title color
\begin{block}{Acknowledgments}
\end{block}
\end{column} % End of the third column
\end{columns} % End of all the columns in the poster
\end{frame} % End of the enclosing frame
\end{document}


The result is shown in the picture below:

• Thanks for the quick reply! So I have applied your edit with a placeholder picture of mine and everything compiles with no errors but I do not see the placeholder picture that I am using. It may just be a question of picture size and position. Did you have a file name for 'fig' like 'placeholder.png' or 'placeholder'? – TAO May 24 '18 at 20:03
• I'm sorry, when I was formatting the text apparently removed some of the options of the environment 'tikzpicture'. The correct title should be '\begin{tikzpicture}[remember picture, overlay]'. I have already corrected this error in my answer. – Vladimir May 24 '18 at 21:17
• @TO4991, In fact, the file name was 'fig.png'. And pdflatex should find the appropriate file. – Vladimir May 24 '18 at 21:36