High-Performance Graphics 2015 Paper

Quintijn Hendrickx, Leonardo Scandolo, Martin Eisemann, Elmar Eisemann – TU Delft “Adaptively Layered Statistical Volumetric Obscurance”  – We accelerate volumetric obscurance, a variant of ambient occlusion, and solve undersampling artifacts, such as banding, noise or blurring, that screen-space techniques traditionally suffer from. We make use of an efficient statistical model to evaluate the occlusion factor in screen-space using a single sample. Overestimations and halos are reduced by an adaptive layering of the visible geometry (PDF).