Publication Details

High-quality Shadows with Improved Paraboloid Mapping

VANEK Juraj, NAVRÁTIL Jan, HEROUT Adam and ZEMČÍK Pavel. High-quality Shadows with Improved Paraboloid Mapping. In: Advances in Visual Computing. Lecture Notes in Computer Science, vol. 6938. Heidelberg: Springer Verlag, 2011, pp. 421-430. ISBN 978-3-642-24027-0.
Czech title
Vysoko kvalitní stíny pomocí vylepšené paraboloidní projekce
Type
conference paper
Language
english
Authors
Keywords

shadow maps, dual-paraboloid mapping, omnidirectional lights, aliasing

Abstract

This paper introduces a novel approach to rendering of high-
quality shadows in real-time. The contemporary approach to shadow rendering in real-time is shadow maps algorithm. The standard shadow maps suffer from discretization and aliasing due to the limited resolution of the shadow texture. Moreover, omnidirectional lights need additional treatment to work correctly, e.g. with dual-paraboloid shadow maps. We propose a new technique that significantly reduces the aliasing problem and works correctly for various kinds of light sources. Our technique adapts the light's field-of-view to the visible part of the scene and thus stores only the relevant part of the scene to the full resolution of the shadow map. It produces high-quality shadows which are not constrained by position or type of the light sources and also works in fully dynamic scenes.

Published
2011
Pages
421-430
Proceedings
Advances in Visual Computing
Series
Lecture Notes in Computer Science
Volume
6938
Conference
7th International Symposium on Visual Computing 2011, Las Vegas, US
ISBN
978-3-642-24027-0
Publisher
Springer Verlag
Place
Heidelberg, DE
BibTeX
@INPROCEEDINGS{FITPUB9695,
   author = "Juraj Vanek and Jan Navr\'{a}til and Adam Herout and Pavel Zem\v{c}\'{i}k",
   title = "High-quality Shadows with Improved Paraboloid Mapping",
   pages = "421--430",
   booktitle = "Advances in Visual Computing",
   series = "Lecture Notes in Computer Science",
   volume = 6938,
   year = 2011,
   location = "Heidelberg, DE",
   publisher = "Springer Verlag",
   ISBN = "978-3-642-24027-0",
   language = "english",
   url = "https://www.fit.vut.cz/research/publication/9695"
}
Back to top