Directional Occlusion via Multi-Irradiance Mapping

Martin Misiak and Arnulph Fuhrmann.
In: Proceedings of SIGGRAPH ’17 Posters, Los Angeles, CA, USA, 2017

 

Left: Irradiance map with bent normal + AO (8.0 ms). – Middle: Raytraced ground truth. – Right: Our approach (7.2 ms).

Abstract

We present a new, physically plausible, real-time approach to compute directional occlusion for dynamic objects, lit with image based lighting. For this, we partition the hemisphere into multiple sectors and pre-convolve these into separate irradiance maps. At runtime the contributions of each sector are then individually occluded and summed together.

Paper

DOI: 10.1145/3102163.3102217

Preprint: PDF