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Lite Brite

3D World

3D Artist

Monday, 31 July, 3:45 pm - 5:15 pm, Los Angeles Convention Center, Room 402AB

Importance Sampling of Many Lights With Adaptive Tree Splitting

In this technique for importance sampling large collections of lights, a bounding-volume hierarchy over all lights is traversed at each shading point using a single random number with an adaptive sampling rate in a way that importance samples their predicted contribution.

Alejandro Conty Estevez
Sony Pictures Imageworks

Christopher Kulla
Sony Pictures Imageworks

The Iray Light-Transport Simulation and Rendering System

Iray is a full-featured light-transport simulation and rendering system developed over the last decade It is capable of predictive rendering with minimal user configuration, focusing on design decisions and technical challenges.

Alexander Keller
NVIDIA Corporation

Carsten Wächter
NVIDIA Corporation

Matthias Raab
NVIDIA Corporation

Daniel Seibert
NVIDIA Corporation

Dietger van Antwerpen
NVIDIA Corporation

Johann Korndörfer
NVIDIA Corporation

Lutz Kettner
NVIDIA Corporation

Precomputed Multiple Scattering for Light Simulation in Participating Medium

This work precomputes the result of multiple scattering events, assuming an infinite medium, and stores it in two precomputed 4D tables that can be used with many rendering algorithms, such as VRL, unified point beams and paths (UPBP) or manifold exploration metropolis light transport (MEMLT), greatly reducing the convergence time.

Beibei Wang
Inria, Université Grenoble Alpes, Nanjing University of Science and Technology

Nicolas Holzschuch
Inria, Université Grenoble Alpes

Double Hierarchies for Efficient Sampling in Monte Carlo Rendering

This talk proposes a novel representation of the light field tailored to improve importance sampling for Monte Carlo rendering. The data structure is based on Double Trees, supports many local models, and can be efficiently queried and progressively refined with an arbitrary number of photons.

Norbert Bus
Centre National de la Recherche Scientifique, Télécom ParisTech, Université Paris-Saclay

Tamy Boubekeur
Télécom ParisTech, Université Paris-Saclay