Publication detail

High-quality Shadows with Improved Paraboloid Mapping

VANEK, J. NAVRÁTIL, J. HEROUT, A. ZEMČÍK, P.

Original Title

High-quality Shadows with Improved Paraboloid Mapping

English Title

High-quality Shadows with Improved Paraboloid Mapping

Type

conference paper

Language

en

Original 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.

English 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.

Keywords

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

RIV year

2011

Released

29.06.2011

Publisher

Springer Verlag

Location

Heidelberg

ISBN

978-3-642-24027-0

Book

Advances in Visual Computing

Edition

Lecture Notes in Computer Science

Edition number

NEUVEDEN

Pages from

421

Pages to

430

Pages count

10

Documents

BibTex


@inproceedings{BUT76415,
  author="Juraj {Vanek} and Jan {Navrátil} and Adam {Herout} and Pavel {Zemčík}",
  title="High-quality Shadows with Improved Paraboloid Mapping",
  annote="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.",
  address="Springer Verlag",
  booktitle="Advances in Visual Computing",
  chapter="76415",
  edition="Lecture Notes in Computer Science",
  howpublished="online",
  institution="Springer Verlag",
  year="2011",
  month="june",
  pages="421--430",
  publisher="Springer Verlag",
  type="conference paper"
}