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    • 38-Issue 4
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    Distributing Monte Carlo Errors as a Blue Noise in Screen Space by Permuting Pixel Seeds Between Frames

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    Date
    2019
    Author
    Heitz, Eric
    Belcour, Laurent
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    Abstract
    Recent work has shown that distributing Monte Carlo errors as a blue noise in screen space improves the perceptual quality of rendered images. However, obtaining such distributions remains an open problem with high sample counts and highdimensional rendering integrals. In this paper, we introduce a temporal algorithm that aims at overcoming these limitations. Our algorithm is applicable whenever multiple frames are rendered, typically for animated sequences or interactive applications. Our algorithm locally permutes the pixel sequences (represented by their seeds) to improve the error distribution across frames. Our approach works regardless of the sample count or the dimensionality and significantly improves the images in low-varying screen-space regions under coherent motion. Furthermore, it adds negligible overhead compared to the rendering times.
    BibTeX
    @article {10.1111:cgf.13778,
    journal = {Computer Graphics Forum},
    title = {{Distributing Monte Carlo Errors as a Blue Noise in Screen Space by Permuting Pixel Seeds Between Frames}},
    author = {Heitz, Eric and Belcour, Laurent},
    year = {2019},
    publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
    ISSN = {1467-8659},
    DOI = {10.1111/cgf.13778}
    }
    URI
    https://doi.org/10.1111/cgf.13778
    https://diglib.eg.org:443/handle/10.1111/cgf13778
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