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

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): Lenguajes y Sistemas Informáticos (Departamento de Informática e Ingeniería de Sistemas)

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 Registro creado el 2018-04-18, última modificación el 2018-04-19

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