Exploiting temporal coherence in global illumination
Proceedings of the 20th spring conference on Computer graphics
Radiance Caching for Efficient Global Illumination Computation
IEEE Transactions on Visualization and Computer Graphics
ACM SIGGRAPH 2006 Papers
A ray tracing solution for diffuse interreflection
ACM SIGGRAPH 2007 courses
Radiance caching for efficient global illumination computation
ACM SIGGRAPH 2008 classes
ACM SIGGRAPH 2008 classes
Automated reprojection-based pixel shader optimization
ACM SIGGRAPH Asia 2008 papers
ACM SIGGRAPH Asia 2009 papers
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Efficient global illumination computation in dynamicallychanging environments is an important practical problem.In high-quality animation rendering costly "final gathering"technique is commonly used. We extend this techniqueinto temporal domain by exploiting coherence betweenthe subsequent frames. For this purpose we store previouslycomputed incoming radiance samples and refreshthem evenly in space and time using some aging criteria.The approach is based upon a two-pass photon mapping algorithmwith irradiance cache, but it can be applied alsoin other gathering methods. The algorithm significantly reducesthe cost of expensive indirect lighting computationand suppresses temporal aliasing with respect to the stateof the art frame-by-frame rendering techniques.