filename     : was07.pdf
entry        : article
conference   : 
pages        : 203-216
year         : 2007
month        : February
title        : Point-sampled 3D video of real-world scenes
subtitle     :
author       : Michael Waschbüsch, Stephan Würmlin, Daniel Cotting, Markus Gross
booktitle    : Signal Processing: Image Communication
ISSN/ISBN    : 0923-5965
editor       : 
publisher    : Elsevier
publ.place   : 
volume       : 22
issue        : 2
language     : english
keywords     : 3D video, free-viewpoint video, scene acquisition, point-based graphics
abstract     :
  This paper presents a point-sampled approach for capturing
  three-dimensional video footage and subsequent re-rendering of
  real-world scenes. The acquisition system is composed of multiple
  sparsely placed 3D video bricks. The bricks contain a low-cost
  projector, two gray-scale cameras and a high-resolution color
  camera. To improve on depth calculation we rely on structured light
  patterns. Texture images and pattern-augmented views of the scene
  are acquired simultaneously by time multiplexed projections of
  complementary patterns and synchronized camera exposures.
  High-resolution depth maps are extracted using depth-from-stereo
  algorithms performed on the acquired pattern images. The surface
  samples corresponding to the depth values are merged into a
  view-independent, point-based 3D data structure. This representation
  allows for efficient post-processing algorithms and leads to a high
  resulting rendering quality using enhanced probabilistic EWA volume
  splatting. In this paper, we focus on the 3D video acquisition
  system and necessary image and video processing techniques.