Simulating Photon Mapping for Real-time Applications

Bent Dalgaard Larsen, Niels Jorgen Christen
Technical University of Denmark
Eurographics symposium on rendering 2004, p.123-131


   title={Simulating photon mapping for real-time applications},

   author={Larsen, B.D. and Christensen, N.J.},

   booktitle={Eurographics symposium on rendering},





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This paper introduces a novel method for simulating photon mapping for real-time applications. First we introduce a new method for selectively redistributing photons. Then we describe a method for selectively updating the indirect illumination. The indirect illumination is calculated using a new GPU accelerated final gathering method and the illumination is then stored in light maps. Caustic photons are traced on the CPU and then drawn using points in the framebuffer, and finally filtered using the GPU. Both diffuse and non-diffuse surfaces can be handled
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