main.tex

\documentclass[final,hyperref={pdfpagelabels=false}]{beamer}
\mode<presentation>{\usetheme{tibposter}}
\usepackage[orientation=portrait,size=a1,scale=1.4,debug]{beamerposter}
%\usepackage{ngerman}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage{lmodern} %damit \textit und \textbf in beamerclass funktionieren
\usepackage{exscale} %vernünfige Scalierung des Summenzeichens
\usepackage{amsmath,amsthm, amssymb, latexsym}%--- Schnipp ---
\usepackage{array,booktabs,tabularx}
\usepackage{etex} %Erhöht Anzahl von "Registern"; wegen Fehlermeldung "! No room for a new \dimen .\ch@ck ...\else \errmessage {No room for a new #3}"
%\usepackage[x11names]{xcolor}
\usepackage{xfrac}
\usepackage{tikz}
\usepackage{pgfplots}
\usepackage{url}
\usepackage[numbers]{natbib}
%\usepackage{tocstyle}

\usepackage[printonlyused,nolist]{acronym}
\usepackage{siunitx}

\sisetup{round-mode=places,round-precision=1}
\usepackage{url}
\usepackage{hyphenat}

%\usepackage[backend=biber,bibencoding=utf8,style=numeric,%sortcites=true,
%sorting=none,
%url=false]{biblatex}
	%\renewbibmacro{in:}{%
  %\ifentrytype{article}{}{\printtext{\bibstring{in}\intitlepunct}}} %%% 'In:' bei Artikel-Zitation unterbinden
	\setbeamertemplate{caption}[numbered]
\usepackage{caption3}
	\captionsetup{format=hang, justification=raggedright,labelformat = simple, singlelinecheck = false} %, width = 0.44\textwidth
	\setbeamertemplate{caption}[caption3]
%
%\addto\captionsenglish{\renewcommand{\figurename}{Abb.}}
%\addto\captionsenglish{\renewcommand{\tablename}{Tab.}}
\usepgfplotslibrary{fillbetween}

\begin{acronym}
  \acro{CNN}{convolutional neural networks}
  \acro{GPU}{graphics processing unit}
  \acro{SGD}{stochastic gradient descent}
  \acro{ReLU}{rectified linear units}
  \acro{tf-idf}{term frequency and inverse document frequency}
  \acro{API}{application programming interface}
  \acro{LDA}{Latent Dirichlet allocation}
  \acro{HOG}{histogram of oriented gradients}
  \acro{SIFT}{scale-invariant feature transform}
  \acro{SVM}{support vector machine}
  \acro{IFV}{improved Fisher vector}
  \acro{BoVW}{bag-of-visual-words}
  \acro{ILSVRC}{ImageNet Large Scale Visual Recognition Challenge}
  \acro{VOC}{Visual Object Classes}
\end{acronym}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\graphicspath{{figures/}}

\title{On the Effects of Spam Filtering and Incremental Learning for Web-Supervised Visual Concept Classification}
\author{Matthias Springstein$^{1}$, Ralph Ewerth$^{1,2}$}
\institute{$^{1}$German National Library of Science and Technology (TIB)\\ $^{2}$Leibniz Universit\"at Hannover, Faculty of Electrical Engineering and Computer Science}
\date[August 2015]{August 2015}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newlength{\columnheight}
\setlength{\columnheight}{105cm}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\begin{frame}
	\begin{columns}
	  \begin{column}{.49\textwidth}
			\begin{block}{Introduction}

			\end{block}
		\end{column}

	  \begin{column}{.49\textwidth}
			\begin{block}{Introduction}
			\end{block}
		\end{column}
	\end{columns}
\end{frame}


\end{document}