Publication detail

Improved Computation of Attenuated Light with Application in Scenes with Many Light Sources

MILET, T. NAVRÁTIL, J. HEROUT, A. ZEMČÍK, P.

Original Title

Improved Computation of Attenuated Light with Application in Scenes with Many Light Sources

English Title

Improved Computation of Attenuated Light with Application in Scenes with Many Light Sources

Type

conference paper

Language

en

Original Abstract

This paper presents and investigates methods for reducing illumination error in scenes illuminated with many light sources with limited spatial influence. Tiled shading and Clustered deferred and forward shading use the assumption, that light sources has limited spatial influence and can be represented as bounding spheres. Illumination of surface point is only computed, if it lies within bounding sphere of the light source. We explore difference in illumination between scenes illuminated with use of this assumption and scenes illuminated without use of this assumption. We show that difference can be decreased, if we add ambient lighting. We propose method for fast estimation of ambient lighting in scenes illuminated with many light sources with limited spatial influence. We also propose method for elimination of discontinuities on surface points on the edge of bounding spheres of light sources. Our methods are tested on two different scenes: procedurally generated city and cathedral of Sibenik. Our approach can be applied in various systems without any structural modifications.

English abstract

This paper presents and investigates methods for reducing illumination error in scenes illuminated with many light sources with limited spatial influence. Tiled shading and Clustered deferred and forward shading use the assumption, that light sources has limited spatial influence and can be represented as bounding spheres. Illumination of surface point is only computed, if it lies within bounding sphere of the light source. We explore difference in illumination between scenes illuminated with use of this assumption and scenes illuminated without use of this assumption. We show that difference can be decreased, if we add ambient lighting. We propose method for fast estimation of ambient lighting in scenes illuminated with many light sources with limited spatial influence. We also propose method for elimination of discontinuities on surface points on the edge of bounding spheres of light sources. Our methods are tested on two different scenes: procedurally generated city and cathedral of Sibenik. Our approach can be applied in various systems without any structural modifications.

Keywords

Real-time rendering, many light sources, Phong lighting model, ambient term

RIV year

2013

Released

03.05.2013

Publisher

Comenius University in Bratislava

Location

Bratislava

ISBN

978-80-223-3377-1

Book

Proceedings of SCCG 2013

Edition

NEUVEDEN

Edition number

NEUVEDEN

Pages from

155

Pages to

160

Pages count

6

Documents

BibTex


@inproceedings{BUT103469,
  author="Tomáš {Milet} and Jan {Navrátil} and Adam {Herout} and Pavel {Zemčík}",
  title="Improved Computation of Attenuated Light with Application in Scenes with Many Light Sources",
  annote="This paper presents and investigates methods for reducing illumination error in
scenes illuminated with many light sources with limited spatial influence. Tiled
shading and Clustered deferred and forward shading use the assumption, that light
sources has limited spatial influence and can be represented as bounding spheres.
Illumination of surface point is only computed, if it lies within bounding sphere
of the light source. We explore difference in illumination between scenes
illuminated with use of this assumption and scenes illuminated without use of
this assumption. We show that difference can be decreased, if we add ambient
lighting. We propose method for fast estimation of ambient lighting in scenes
illuminated with many light sources with limited spatial influence. We also
propose method for elimination of discontinuities on surface points on the edge
of bounding spheres of light sources. Our methods are tested on two different
scenes: procedurally generated city and cathedral of Sibenik. Our approach can be
applied in various systems without any structural modifications.",
  address="Comenius University in Bratislava",
  booktitle="Proceedings of SCCG 2013",
  chapter="103469",
  edition="NEUVEDEN",
  howpublished="print",
  institution="Comenius University in Bratislava",
  year="2013",
  month="may",
  pages="155--160",
  publisher="Comenius University in Bratislava",
  type="conference paper"
}