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    Direct Raytracing of Particle-based Fluid Surfaces Using Anisotropic Kernels

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    Date
    2018
    Author
    Biedert, Tim
    Sohns, Jan-Tobias
    Schröder, Simon
    Amstutz, Jefferson
    Wald, Ingo
    Garth, Christoph
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    Abstract
    Particle-based simulation models have assumed a significant role in the numerical computation of high-fidelity transient flow and continuum mechanical problems. However, direct visualization of surfaces from particle data without intermediary discrete triangulation remains a challenging task. We demonstrate a novel direct raytracing scheme for free surface intersection based on anisotropic smoothing kernels. Our approach efficiently reduces the number of candidate kernels evaluated to converge to the surface threshold, thereby running in image space rather than object space complexity. We conduct comprehensive benchmarks with respect to data set size, scene complexity, visual fidelity and hardware setup. Our versatile system is suitable for both high quality and interactive desktop rendering, scales reasonably well even with trivial parallelization and renders up to 170 million particles on 32 distributed compute nodes at close to interactive frame rates at 4K resolution with ambient occlusion.
    BibTeX
    @inproceedings {pgv.20181090,
    booktitle = {Eurographics Symposium on Parallel Graphics and Visualization},
    editor = {Hank Childs and Fernando Cucchietti},
    title = {{Direct Raytracing of Particle-based Fluid Surfaces Using Anisotropic Kernels}},
    author = {Biedert, Tim and Sohns, Jan-Tobias and Schröder, Simon and Amstutz, Jefferson and Wald, Ingo and Garth, Christoph},
    year = {2018},
    publisher = {The Eurographics Association},
    ISSN = {1727-348X},
    ISBN = {978-3-03868-054-3},
    DOI = {10.2312/pgv.20181090}
    }
    URI
    http://dx.doi.org/10.2312/pgv.20181090
    https://diglib.eg.org:443/handle/10.2312/pgv20181090
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    Eurographics Association copyright © 2013 - 2020 
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    Theme by @mire NV
    System hosted at  Graz University of Technology.
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