• Login
    View Item 
    •   Eurographics DL Home
    • Computer Graphics Forum
    • Volume 34 (2015)
    • 34-Issue 4
    • View Item
    •   Eurographics DL Home
    • Computer Graphics Forum
    • Volume 34 (2015)
    • 34-Issue 4
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Extracting Microfacet-based BRDF Parameters from Arbitrary Materials with Power Iterations

    Thumbnail
    View/Open
    v34i4pp021-030.pdf (17.16Mb)
    supplemental.pdf (64.59Mb)
    Date
    2015
    Author
    Dupuy, Jonathan
    Heitz, Eric
    Iehl, Jean-Claude
    Poulin, Pierre ORCID
    Ostromoukhov, Victor
    Pay-Per-View via TIB Hannover:

    Try if this item/paper is available.

    Metadata
    Show full item record
    Abstract
    We introduce a novel fitting procedure that takes as input an arbitrary material, possibly anisotropic, and automatically converts it to a microfacet BRDF. Our algorithm is based on the property that the distribution of microfacets may be retrieved by solving an eigenvector problem that is built solely from backscattering samples. We show that the eigenvector associated to the largest eigenvalue is always the only solution to this problem, and compute it using the power iteration method. This approach is straightforward to implement, much faster to compute, and considerably more robust than solutions based on nonlinear optimizations. In addition, we provide simple conversion procedures of our fits into both Beckmann and GGX roughness parameters, and discuss the advantages of microfacet slope space to make our fits editable. We apply our method to measured materials from two large databases that include anisotropic materials, and demonstrate the benefits of spatially varying roughness on texture mapped geometric models.
    BibTeX
    @article {10.1111:cgf.12675,
    journal = {Computer Graphics Forum},
    title = {{Extracting Microfacet-based BRDF Parameters from Arbitrary Materials with Power Iterations}},
    author = {Dupuy, Jonathan and Heitz, Eric and Iehl, Jean-Claude and Poulin, Pierre and Ostromoukhov, Victor},
    year = {2015},
    publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
    DOI = {10.1111/cgf.12675}
    }
    URI
    http://dx.doi.org/10.1111/cgf.12675
    Collections
    • 34-Issue 4
    • EGSR15: 26th Eurographics Symposium on Rendering

    Eurographics Association copyright © 2013 - 2022 
    Send Feedback | Contact - Imprint | Data Privacy Policy | Disable Google Analytics
    Theme by @mire NV
    System hosted at  Graz University of Technology.
    TUGFhA
     

     

    Browse

    All of Eurographics DLCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    BibTeX | TOC

    Create BibTeX Create Table of Contents

    Eurographics Association copyright © 2013 - 2022 
    Send Feedback | Contact - Imprint | Data Privacy Policy | Disable Google Analytics
    Theme by @mire NV
    System hosted at  Graz University of Technology.
    TUGFhA