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Stochastic Progressive Photon Mapping for Dynamic Scenes
Author(s) -
Weiss Maayan,
Grosch Thorsten
Publication year - 2012
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/j.1467-8659.2012.03051.x
Subject(s) - computer science , correctness , global illumination , frame (networking) , computer vision , speedup , point (geometry) , noise (video) , computer graphics (images) , pixel , artificial intelligence , frame rate , algorithm , image (mathematics) , mathematics , rendering (computer graphics) , geometry , parallel computing , telecommunications
Stochastic Progressive Photon Mapping (SPPM) is a method to simulate consistent global illumination. It is especially useful for complicated light paths like caustics seen through a glass surface. Up to now, SPPM can only be applied to a static scene and noise‐free images require hours to compute. Our approach is to extend this method to dynamic scenes (DSPPM) for an efficient simulation of animated objects and materials. We identify both hit point and photon information that can be re‐used for the pixel statistics of multiple frames. In comparison to an SPPM simulation performed for each frame, we achieve a 1.96 −9.53 speedup in our test scenes without changing correctness or simulation quality.