Multiplexed Metropolis Light Transport Toshiya Hachisuka1,2 Anton S. Kaplanyan3 Carsten Dachsbacher3 1Aarhus University 2University of Tokyo 3Karlsruhe Institute of Technology SIGGRAPH 2014 2 Two classes of MC methods • • Ordinary Monte Carlo Markov chain Monte Carlo 3 Two classes of MC methods • • Ordinary Monte Carlo Markov chain Monte Carlo 4 Ordinary Monte Carlo • Generate independent samples from a known PDF • We know how to integrate and invert this PDF • Multiple importance sampling [Veach and Guibas 95] • Utilizes multiple known PDFs 5 Multiple sampling methods 6 Multiple sampling methods 7 Multiple sampling methods 8 Multiple sampling methods 9 Multiple sampling methods p (x) p (x) 0 3 p (x) p (x) 1 2 10 Bidirectional path tracing • Uses MIS to combine multiple sampling techniques