Browsing Recerca: articles, congressos, llibres by Subject "Ray tracing"

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Interactive VPL-based global illumination on the GPU using fuzzy clustering

Colom, Arnau; Marques, Ricardo; Santos, Luís Paulo (Elsevier, 2022)

Physically-based synthesis of high quality imagery, including global illumination light transport phenomena, results in a significant workload, which makes interactive rendering a very challenging task. We propose a VPL-based ...
Optimal sample weights for hemispherical integral quadratures

Marques, Ricardo; Bouville, Christian; Bouatouch, Kadi (Wiley, 2018)

This paper proposes optimal quadrature rules over the hemisphere for the shading integral. We leverage recent work regarding the theory of quadrature rules over the sphere in order to derive a new theoretical framework for ...
Spherical Fibonacci point sets for illumination integrals

Marques, Ricardo; Bouville, Christian; Ribardière, Mickaël; Santos, Luís Paulo (Wiley, 2013)

Quasi-Monte Carlo (QMC) methods exhibit a faster convergence rate than that of classic Monte Carlo methods. This feature has made QMC prevalent in image synthesis, where it is frequently used for approximating the value ...

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