Exploiting Temporal Coherence for Incremental All-Frequency Relighting
Current PRT methods exploit spatial coherence of the lighting (such as with wavelets) and of light transport (such as with CPCA). We consider a significant, yet unexplored form of coherence, temporal coherence of the lighting from frame to frame. We achieve speedups of 3x-4x over conventional PRT with minimal implementation effort, and can trivially be added to almost any existing PRT algorithm.
Ryan Overbeck, Aner Ben-Artzi, Ravi Ramamoorthi, and Eitan Grinspun. "Exploiting Temporal Coherence for Incremental All-Frequency Relighting". In Eurographics Symposium on Rendering, 2006.