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    Adaptive Sampling for On-The-Fly Ray Casting of Particle-based Fluids

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    Date
    2016
    Author
    Hochstetter, Hendrik
    Orthmann, Jens
    Kolb, Andreas
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    Abstract
    We present a fast and accurate ray casting technique for unstructured and dynamic particle sets. Our technique focuses on efficient, high quality volume rendering of fluids for computer animation and scientific applications. Our novel adaptive sampling scheme allows to locally adjust sampling rates both along rays and in lateral direction and is driven by a user-controlled screen space error tolerance. In order to determine appropriate local sampling rates, we propose a sampling error analysis framework based on hierarchical interval arithmetic. We show that our approach leads to significant rendering speed-ups with controllable screen space errors. Efficient particle access is achieved using a sparse view-aligned grid which is constructed on-the-fly without any pre-processing.
    BibTeX
    @inproceedings {10.2312:hpg.20161199,
    booktitle = {Eurographics/ ACM SIGGRAPH Symposium on High Performance Graphics},
    editor = {Ulf Assarsson and Warren Hunt},
    title = {{Adaptive Sampling for On-The-Fly Ray Casting of Particle-based Fluids}},
    author = {Hochstetter, Hendrik and Orthmann, Jens and Kolb, Andreas},
    year = {2016},
    publisher = {The Eurographics Association},
    ISSN = {2079-8679},
    ISBN = {978-3-03868-008-6},
    DOI = {10.2312/hpg.20161199}
    }
    URI
    http://dx.doi.org/10.2312/hpg.20161199
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