A framework for precomputed and captured light transport
ACM Transactions on Graphics (TOG)
Proceedings of the 2010 ACM SIGGRAPH symposium on Interactive 3D Graphics and Games
PantaRay: fast ray-traced occlusion caching of massive scenes
ACM SIGGRAPH 2010 papers
OptiX: a general purpose ray tracing engine
ACM SIGGRAPH 2010 papers
The State of the Art in Interactive Global Illumination
Computer Graphics Forum
EGSR'11 Proceedings of the Twenty-second Eurographics conference on Rendering
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Ambient Occlusion and Ambient Obscurance are coarse approximations to global illumination from ambient lighting, commonly used in film and games. This paper describes a system that computes Ambient Obscurance over the vertices of complex polygon meshes. Novel contributions include pre-processing necessary for "triangle soup" scene representations to minimize artifacts, a compact model for different classes of instanced decorator objects such as trees and shrubs, a compact model for pre-computed visibility to be used on dynamically placed objects, and an approximation to model the occlusion of small decorator objects when ray tracing.