Information
- Publication Type: Conference Paper
- Workgroup(s)/Project(s):
- Date: June 2005
- Booktitle: Rendering Techniques 2005 (Proceedings Eurographics Symposium on Rendering)
- Date (from): 29. June 2005
- Date (to): 1. July 2005
- Editor: Kavita Bala and Philip Dutré
- ISBN: 3-905673-23-1
- Lecturer: Jiří Bittner
- Location: Konstanz, Germany
- Organization: Eurographics
- Pages (from): 223
- Pages (to): 230
- Publisher: Eurographics Association
- Keywords: real-time rendering, visibility
Abstract
We present a fast exact from-region visibility algorithm for 2.5D
urban scenes. The algorithm uses a hierarchical subdivision of
line-space for identifying visibility interactions in a 2D
footprint of the scene. Visibility in the remaining vertical
dimension is resolved by testing for the existence of lines
stabbing sequences of virtual portals. Our results show that exact
analytic from-region visibility in urban scenes can be computed at
times comparable or even superior to recent conservative methods.
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BibTeX
@inproceedings{bittner-2005-egsr,
title = "Fast Exact From-Region Visibility in Urban Scenes",
author = "Ji\v{r}\'{i} Bittner and Peter Wonka and Michael Wimmer",
year = "2005",
abstract = "We present a fast exact from-region visibility algorithm for
2.5D urban scenes. The algorithm uses a hierarchical
subdivision of line-space for identifying visibility
interactions in a 2D footprint of the scene. Visibility in
the remaining vertical dimension is resolved by testing for
the existence of lines stabbing sequences of virtual
portals. Our results show that exact analytic from-region
visibility in urban scenes can be computed at times
comparable or even superior to recent conservative methods. ",
month = jun,
booktitle = "Rendering Techniques 2005 (Proceedings Eurographics
Symposium on Rendering)",
editor = "Kavita Bala and Philip Dutr\'{e}",
isbn = "3-905673-23-1",
location = "Konstanz, Germany",
organization = "Eurographics",
publisher = "Eurographics Association",
pages = "223--230",
keywords = "real-time rendering, visibility",
URL = "https://www.cg.tuwien.ac.at/research/publications/2005/bittner-2005-egsr/",
}