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    Adaptive BRDF-Oriented Multiple Importance Sampling of Many Lights

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    Date
    2019
    Author
    Liu, Yifan
    Xu, Kun
    Yan, Ling-Qi
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    Abstract
    Many-light rendering is becoming more common and important as rendering goes into the next level of complexity. However, to calculate the illumination under many lights, state of the art algorithms are still far from efficient, due to the separate consideration of light sampling and BRDF sampling. To deal with the inefficiency of many-light rendering, we present a novel light sampling method named BRDF-oriented light sampling, which selects lights based on importance values estimated using the BRDF's contributions. Our BRDF-oriented light sampling method works naturally with MIS, and allows us to dynamically determine the number of samples allocated for different sampling techniques. With our method, we can achieve a significantly faster convergence to the ground truth results, both perceptually and numerically, as compared to previous many-light rendering algorithms.
    BibTeX
    @article {10.1111:cgf.13776,
    journal = {Computer Graphics Forum},
    title = {{Adaptive BRDF-Oriented Multiple Importance Sampling of Many Lights}},
    author = {Liu, Yifan and Xu, Kun and Yan, Ling-Qi},
    year = {2019},
    publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
    ISSN = {1467-8659},
    DOI = {10.1111/cgf.13776}
    }
    URI
    https://doi.org/10.1111/cgf.13776
    https://diglib.eg.org:443/handle/10.1111/cgf13776
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    System hosted at  Graz University of Technology.
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