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    • 35-Issue 7
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    Merged Multiresolution Hierarchies for Shadow Map Compression

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    Date
    2016
    Author
    Scandolo, Leonardo
    Bauszat, Pablo
    Eisemann, Elmar ORCID
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    Abstract
    Multiresolution Hierarchies (MH) and Directed Acyclic Graphs (DAG) are two recent approaches for the compression of highresolution shadow information. In this paper, we introduce Merged Multiresolution Hierarchies (MMH), a novel data structure that unifies both concepts. An MMH leverages both hierarchical homogeneity exploited in MHs, as well as topological similarities exploited in DAG representations. We propose an efficient hash-based technique to quickly identify and remove redundant subtree instances in a modified relative MH representation. Our solution remains lossless and significantly improves the compression rate compared to both preceding shadow map compression algorithms, while retaining the full run-time performance of traditional MH representations.
    BibTeX
    @article {10.1111:cgf.13035,
    journal = {Computer Graphics Forum},
    title = {{Merged Multiresolution Hierarchies for Shadow Map Compression}},
    author = {Scandolo, Leonardo and Bauszat, Pablo and Eisemann, Elmar},
    year = {2016},
    publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
    ISSN = {1467-8659},
    DOI = {10.1111/cgf.13035}
    }
    URI
    http://dx.doi.org/10.1111/cgf.13035
    https://diglib.eg.org:443/handle/10.1111/cgf13035
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    • 35-Issue 7

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