Interactive cloud rendering using temporally coherent photon mapping

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10132503" target="_blank" >RIV/00216208:11320/12:10132503 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.cag.2012.10.002" target="_blank" >http://dx.doi.org/10.1016/j.cag.2012.10.002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cag.2012.10.002" target="_blank" >10.1016/j.cag.2012.10.002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interactive cloud rendering using temporally coherent photon mapping

Popis výsledku v původním jazyce

This work presents a novel interactive algorithm for simulation of light transport in clouds. Exploiting the high temporal coherence of the typical illumination and morphology of clouds we build on volumetric photon mapping, which we modify to allow forinteractive rendering speeds-instead of building a fresh irregular photon map for every scene state change we accumulate photon contributions in a regular grid structure. This is then continuously being refreshed by re-shooting only a fraction of the total amount of photons in each frame. To maintain its temporal coherence and low variance, a low-resolution grid is initially used, and is then upsampled to the density field resolution on a physical basis in each frame. We also present a technique to store and reconstruct the angular illumination information by exploiting properties of the standard Henyey-Greenstein function, namely its ability to express anisotropic angular distributions with a single dominating direction. The presented

Název v anglickém jazyce

Interactive cloud rendering using temporally coherent photon mapping

Popis výsledku anglicky

This work presents a novel interactive algorithm for simulation of light transport in clouds. Exploiting the high temporal coherence of the typical illumination and morphology of clouds we build on volumetric photon mapping, which we modify to allow forinteractive rendering speeds-instead of building a fresh irregular photon map for every scene state change we accumulate photon contributions in a regular grid structure. This is then continuously being refreshed by re-shooting only a fraction of the total amount of photons in each frame. To maintain its temporal coherence and low variance, a low-resolution grid is initially used, and is then upsampled to the density field resolution on a physical basis in each frame. We also present a technique to store and reconstruct the angular illumination information by exploiting properties of the standard Henyey-Greenstein function, namely its ability to express anisotropic angular distributions with a single dominating direction. The presented

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

IN - Informatika

OECD FORD obor

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Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Computers and Graphics

ISSN

0097-8493

e-ISSN

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Svazek periodika

36

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

1109-1118

Kód UT WoS článku

000313766500021

EID výsledku v databázi Scopus

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