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    A Novel Hemispherical Basis for Accurate and Efficient Rendering

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    321-330.pdf (2.764Mb)
    Date
    2004
    Author
    Gautron, Pascal
    Krivanek, Jaroslav
    Pattanaik, Sumanta
    Bouatouch, Kadi
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    Abstract
    This paper presents a new set of hemispherical basis functions dedicated to hemispherical data representation. These functions are derived from associated Legendre polynomials. We demonstrate the usefulness of this basis for representation of surface reflectance functions, rendering using environment maps and for efficient global illumination computation using radiance caching. We show that our basis is more appropriate for hemispherical functions than spherical harmonics. This basis can be efficiently combined with spherical harmonics in applications involving both hemispherical and spherical data.
    BibTeX
    @inproceedings {EGWR:EGSR04:321-330,
    booktitle = {Eurographics Workshop on Rendering},
    editor = {Alexander Keller and Henrik Wann Jensen},
    title = {{A Novel Hemispherical Basis for Accurate and Efficient Rendering}},
    author = {Gautron, Pascal and Krivanek, Jaroslav and Pattanaik, Sumanta and Bouatouch, Kadi},
    year = {2004},
    publisher = {The Eurographics Association},
    ISSN = {1727-3463},
    ISBN = {3-905673-12-6},
    DOI = {10.2312/EGWR/EGSR04/321-330}
    }
    URI
    http://dx.doi.org/10.2312/EGWR/EGSR04/321-330
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    System hosted at  Graz University of Technology.
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