Second-order Occlusion-aware Volumetric Radiance Caching

Marco, Julio (Universidad de Zaragoza) ; Jarabo, Adrian (Universidad de Zaragoza) ; Jarosz, Wojciech ; Gutierrez, Diego (Universidad de Zaragoza)
Second-order Occlusion-aware Volumetric Radiance Caching
Resumen: Accurate simulation of light transport in participating media is expensive, due to the many sca ering events. However, the band- limiting e ect of sca ering in media makes this kind of light trans- port very suitable for adaptive sampling and reconstruction tech- niques. In this work we present a novel algorithm that adaptively samples radiance from sparse points in the medium using up-to second-order occlusion-aware derivatives to determine when in- terpolation is appropriate. We derive our metric from each point’s incoming light eld. We use a proxy triangulation-based repre- sentation of the radiance re ected by the surrounding medium and geometry to e ciently compute the rst- and second-order derivatives of the radiance at the cache points while accounting for occlusion changes. We validate the quality of our approach on a self-contained two-dimensional model for light transport in media. en we show how our results generalize to practical three- dimensional scenarios, where we show much be er results while reducing computation time up to a 30% compared to previous work.
Idioma: Inglés
DOI: 10.1145/3102163.3102242
Año: 2018
Publicado en: ACM TRANSACTIONS ON GRAPHICS 37, 2 (2018), [2 pp.]
ISSN: 0730-0301

Factor impacto JCR: 6.495 (2018)
Categ. JCR: COMPUTER SCIENCE, SOFTWARE ENGINEERING rank: 1 / 107 = 0.009 (2018) - Q1 - T1
Factor impacto SCIMAGO: 2.272 - Computer Graphics and Computer-Aided Design (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/TIN2016-78753-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/TIN2016-79710-P
Tipo y forma: Artículo (Versión definitiva)
Área (Departamento): Área Lenguajes y Sistemas Inf. (Dpto. Informát.Ingenie.Sistms.)

Derechos Reservados Derechos reservados por el editor de la revista

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