filename     : Ger12.pdf
entry        : toappear
conference   : Eurographics 2012, Cagliari, Italy, 13-18 May 2012
pages        : ??-??
year         : 2012
month        : May
title        : Novel-View Synthesis of Outdoor Sport Events Using an Adaptive View-Dependent Geometry
subtitle     :
author       : Marcel Germann, Tiberiu Popa, Richard Keiser, Remo Ziegler, Markus Gross
booktitle    : Computer Graphics Forum
ISSN/ISBN    :
editor       : P. Cignoni, T. Ertl
publisher    :
publ.place   : 
volume       : 31
issue        : 2
language     : english
keywords     : video-based rendering, 3D reconstruction, view-dependent geometry
abstract     : We propose a novel fully automatic method for novel-viewpoint synthesis. Our method robustly handles multi-camera setups featuring wide-baselines in an uncontrolled environment. In a first step, robust and sparse point correspondences are found based on an extension of the Daisy features~\cite{Tola09}. These correspondences together with back-projection errors are used to drive a novel adaptive coarse to fine reconstruction method, allowing to approximate detailed geometry while avoiding an extreme triangle count. 

To render the scene from arbitrary viewpoints we use a view-dependent blending of color information in combination with a view-dependent geometry morph. The view-dependent geometry compensates for misalignments caused by calibration errors. We demonstrate that our method works well under arbitrary lighting conditions with as little as two cameras featuring wide-baselines. The footage taken from real sports broadcast events contains fine geometric structures, which result in nice novel-viewpoint renderings despite of the low resolution in the images.