filename     : was05.pdf
entry        : article
conference   : Pacific Graphics 2005, October 12-14, Macao, China, 2005
pages        : 629-638
year         : 2005
month        : September
title        : Scalable 3D Video of Dynamic Scenes
subtitle     :
author       : Michael Waschbüsch, Stephan Würmlin, Daniel Cotting, Filip Sadlo, Markus Gross
booktitle    : The Visual Computer (Special Issues for Pacific Graphics 2005)
ISSN/ISBN    : 0178-2789
editor       : Prof. Wu
publisher    : Springer, Alfred Hofmann
publ.place   : Tiergartenstr. 17, 69121 Heidelberg, Germany
volume       : 21
issue        : 8-10
language     : english
keywords     : 3D Video, Free-Viewpoint Video, Scene Acquisition, Point-Based Graphics
abstract     : In this paper we present a scalable 3D video framework for capturing and rendering dynamic scenes. The acquisition system is based on multiple sparsely placed 3D video bricks, each comprising a projector, two grayscale cameras and a color camera. Relying on structured light with complementary patterns, texture images and pattern-augmented views of the scene are acquired simultaneously by time multiplexed projections and synchronized camera exposures. Using space-time stereo on the acquired pattern images, high-quality depth maps are extracted, whose corresponding surface samples are merged into a view-independent, point-based 3D data structure. This representation allows for effective photo consistency enforcement and outlier removal, leading to a significant decrease of visual artifacts and a high resulting rendering quality using EWA volume splatting. Our framework and its view-independent representation allow for simple and straightforward editing of 3D video. In order to demonstrate its flexibility, we show compositing techniques and spatio-temporal effects.