State of the Art in Photon Density Estimation

Toshiya Hachisuka, Wojciech Jarosz, Guillaume Bouchard, Per Christensen, Jeppe Revall Frisvad, Wenzel Jakob, Henrik Wann Jensen, Michael Kaschalk, Claude Knaus, Andrew Selle, Ben Spencer

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    Photon-density estimation techniques are a popular choice for simulating light transport in scenes with complicated geometry and materials. This class of algorithms can be used to accurately simulate inter-reflections, caustics, color bleeding, scattering in participating media, and subsurface scattering. Since its introduction, photon-density estimation has been significantly extended in computer graphics with the introduction of: specialized techniques that intelligently modify the positions or bandwidths to reduce visual error using a small number of photons, approaches that eliminate error completely in the limit, and methods that use higher-order samples and queries to reduce error in participating media.

    This two-part course explains how to implement all these latest advances in photon-density estimation. It begins with a short introduction using classical photon mapping, but the remainder of the course provides new, hands-on explanations of the latest developments in this area by experts in each technique. Attendees gain concrete and practical understanding of the latest developments in photon-density-estimation techniques that have not been presented before in SIGGRAPH courses.
    Original languageEnglish
    Title of host publicationACM SIGGRAPH 2012 Courses
    Number of pages469
    PublisherAssociation for Computing Machinery
    Publication date2012
    PagesArticle no. 6
    ISBN (Print)978-1-4503-1678-1
    Publication statusPublished - 2012
    Event39th International Conference and Exhibition Computer Graphics and Interactive Techniques SIGGRAPH 2012 - Los Angeles Convention Center, Los Angeles, CA, United States
    Duration: 5 Aug 20129 Aug 2012


    Conference39th International Conference and Exhibition Computer Graphics and Interactive Techniques SIGGRAPH 2012
    LocationLos Angeles Convention Center
    Country/TerritoryUnited States
    CityLos Angeles, CA
    Internet address


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