Importance Caching for Complex Illumination

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10127580" target="_blank" >RIV/00216208:11320/12:10127580 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1111/j.1467-8659.2012.03049.x" target="_blank" >http://dx.doi.org/10.1111/j.1467-8659.2012.03049.x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/j.1467-8659.2012.03049.x" target="_blank" >10.1111/j.1467-8659.2012.03049.x</a>

Result language

angličtina

Original language name

Importance Caching for Complex Illumination

Original language description

Realistic rendering requires computing the global illumination in the scene, and Monte Carlo integration is the best-known method for doing that. The key to good performance is to carefully select the costly integration samples, which is usually achievedvia importance sampling. Unfortunately, visibility is difficult to factor into the importance distribution, which can greatly increase variance in highly occluded scenes with complex illumination. In this paper, we present importance caching - a novel approach that selects those samples with a distribution that includes visibility, while maintaining efficiency by exploiting illumination smoothness. At a sparse set of locations in the scene, we construct and cache several types of probability distributions with respect to a set of virtual point lights (VPLs), which notably include visibility. Each distribution type is optimized for a specific lighting condition. For every shading point, we then borrow the distributions from nearby cache

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

IN - Informatics

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Computer Graphics Forum

ISSN

0167-7055

e-ISSN

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Volume of the periodical

31

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

701-710

UT code for WoS article

000306181700019

EID of the result in the Scopus database

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