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)