Frequency Based Radiance Cache for Rendering Animations

Renaud Adrien Dubouchet (1) , Laurent Belcour (1) , Derek Nowrouzezahrai (1)

1 University of Montreal

We propose a method to render animation sequences with direct distant lighting that only shades a fraction of the total pixels. We leverage frequency-based analyses of light transport to determine shading and image sampling rates across an animation using a samples cache. To do so, we derive frequency bandwidths that account for the complexity of distant lights, visibility, BRDF, and temporal coherence during animation. We finaly apply a cross-bilateral filter when rendering our final images from sparse sets of shading points placed according to our frequency-based oracles (generally < 25% of the pixels, per frame).

Domaines: Synthèse d'image et réalité virtuelle [cs.GR]

Renaud Adrien Dubouchet, Laurent Belcour, Derek Nowrouzezahrai. Frequency Based Radiance Cache for Rendering Animations. Eurographics Symposium on Rendering, Jun 2017, Helsinki, Finland. ⟨hal-01542616⟩