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    Realistic Soft Shadows by Penumbra-Wedges Blending

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    Date
    2006
    Author
    Forest, Vincent
    Barthe, Loïc ORCID
    Paulin, Mathias
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    Abstract
    Recent real-time shadow generation techniques try to provide shadows with realistic penumbrae. However, most techniques are whether non-physically based or too simplified to produce convicing results. The penumbra-wedges algorithm is a physical approach based on the assumption that penumbrae are non-overlapping. In this paper, we propose an algorithm that takes the advantages of the penumbra-wedges method but solves the "non-overlapping" limitation. We first compute the light occlusion regions per fragment. Then we use this information to detect the areas where penumbrae are overlapping and we perform a realistic penumbra blending.
    BibTeX
    @inproceedings {10.2312:EGGH:EGGH06:039-047,
    booktitle = {Graphics Hardware},
    editor = {Marc Olano and Philipp Slusallek},
    title = {{Realistic Soft Shadows by Penumbra-Wedges Blending}},
    author = {Forest, Vincent and Barthe, Loïc and Paulin, Mathias},
    year = {2006},
    publisher = {The Eurographics Association},
    ISSN = {1727-3471},
    ISBN = {3-905673-37-1},
    DOI = {10.2312/EGGH/EGGH06/039-047}
    }
    URI
    http://dx.doi.org/10.2312/EGGH/EGGH06/039-047
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