Progressive Transient Photon Beams

Marco, J. (Universidad de Zaragoza) ; Guillén, I. (Universidad de Zaragoza) ; Jarosz, W. ; Gutierrez, D. (Universidad de Zaragoza) ; Jarabo, A. (Universidad de Zaragoza)

Resumen: In this work, we introduce a novel algorithm for transient rendering in participating media. Our method is consistent, robust and is able to generate animations of time-resolved light transport featuring complex caustic light paths in media. We base our method on the observation that the spatial continuity provides an increased coverage of the temporal domain, and generalize photon beams to transient-state. We extend stead-state photon beam radiance estimates to include the temporal domain. Then, we develop a progressive variant of our approach which provably converges to the correct solution using finite memory by averaging independent realizations of the estimates with progressively reduced kernel bandwidths. We derive the optimal convergence rates accounting for space and time kernels, and demonstrate our method against previous consistent transient rendering methods for participating media.

Idioma: Inglés

DOI: 10.1111/cgf.13600

Año: 2019

Publicado en: COMPUTER GRAPHICS FORUM 38, 6 (2019), 19-30
ISSN: 0167-7055

Factor impacto JCR: 2.116 (2019)

Categ. JCR: COMPUTER SCIENCE, SOFTWARE ENGINEERING rank: 38 / 108 = 0.352 (2019) - Q2 - T2

Factor impacto SCIMAGO: 1.246 - Computer Networks and Communications (Q1) - Computer Graphics and Computer-Aided Design (Q1)

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Lenguajes y Sistemas Inf. (Dpto. Informát.Ingenie.Sistms.)