loading
Documents

Research.Publish.Connect.

Paper

Paper Unlock

Authors: Rosana Montes ; Carlos Ureña ; Rubén García and Miguel Lastra

Affiliation: E.T.S.I. Informática y de Telecomunicación, University of Granada, Spain

ISBN: 978-989-8111-20-3

Keyword(s): BRDF, Importance Sampling, Monte Carlo Integration, Global Illumination, Rendering, Path Tracing.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Lighting and Appearance ; Rendering ; Rendering Algorithms

Abstract: This paper introduces a new BRDF sampling method with reduced variance, which is based on a hierarchical adaptive parameterless PDF. This PDF is based also on rejection sampling with a bounded average number of trials, even in regions where the BRDF does exhibit high variations. Our algorithm works in an appropiate way with both physical and analytical reflectance models. Reflected directions are sampled by using importance sampling of the BRDF times the cosine term. This fact improves computation of reflected radiance when Monte-Carlo integration is used in Global Illumination. Test images have been obtained by using a Monte- Carlo rendering system, and they show reduced variance as compared with those obtained by other known techniques.

PDF ImageFull Text

Download
CC BY-NC-ND 4.0

Sign In Guest: Register as new SciTePress user now for free.

Sign In SciTePress user: please login.

PDF ImageMy Papers

You are not signed in, therefore limits apply to your IP address 3.227.233.55

In the current month:
Recent papers: 100 available of 100 total
2+ years older papers: 200 available of 200 total

Paper citation in several formats:
Montes R.; Ureña C.; García R.; Lastra M. and (2008). GENERIC BRDF SAMPLING - A Sampling Method for Global Illumination.In Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2008) ISBN 978-989-8111-20-3, pages 191-198. DOI: 10.5220/0001095801910198

@conference{grapp08,
author={Rosana Montes and Carlos Ureña and Rubén García and Miguel Lastra},
title={GENERIC BRDF SAMPLING - A Sampling Method for Global Illumination},
booktitle={Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2008)},
year={2008},
pages={191-198},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001095801910198},
isbn={978-989-8111-20-3},
}

TY - CONF

JO - Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2008)
TI - GENERIC BRDF SAMPLING - A Sampling Method for Global Illumination
SN - 978-989-8111-20-3
AU - Montes, R.
AU - Ureña, C.
AU - García, R.
AU - Lastra, M.
PY - 2008
SP - 191
EP - 198
DO - 10.5220/0001095801910198

Login or register to post comments.

Comments on this Paper: Be the first to review this paper.