“Fast multi-image-based photon tracing with grid-based gathering” by Fei and Wang

  • ©Yun Fei and Bin Wang




    Fast multi-image-based photon tracing with grid-based gathering



    We developed a real-time solution for approximate global illumination, where the temporal cost in complex scenes is dramatically reduced. Our approach initially traces photon-rays with multiple cube-maps, and then gathers the irradiance of photons using uniform grids filled with low-order spherical harmonics. Numerous global illumination effects can be rendered efficiently in our framework.


    1. Kaplanyan, A., and Dachsbacher, C. 2010. Cascaded light propagation volumes for real-time indirect illumination. In Proceedings of the I3D ’10, 99–107.
    2. Szirmay-Kalos, L., Aszódi, B., Lazányi, I., and Premecz, M. 2005. Approximate ray-tracing on the gpu with distance impostors. Comput. Graph. Forum 24, 3, 695–704.
    3. Yao, C., Wang, B., Chan, B., Yong, J., and Paul, J.-C. 2010. Multi-image based photon tracing for interactive global illumination of dynamic scenes. Comput. Graph. Forum 29, 4, 1315–1324.

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