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    • 38-Issue 3
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    Robust Reference Frame Extraction from Unsteady 2D Vector Fields with Convolutional Neural Networks

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    Date
    2019
    Author
    Kim, Byungsoo
    Günther, Tobias ORCID
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    Abstract
    Robust feature extraction is an integral part of scientific visualization. In unsteady vector field analysis, researchers recently directed their attention towards the computation of near-steady reference frames for vortex extraction, which is a numerically challenging endeavor. In this paper, we utilize a convolutional neural network to combine two steps of the visualization pipeline in an end-to-end manner: the filtering and the feature extraction. We use neural networks for the extraction of a steady reference frame for a given unsteady 2D vector field. By conditioning the neural network to noisy inputs and resampling artifacts, we obtain numerically stabler results than existing optimization-based approaches. Supervised deep learning typically requires a large amount of training data. Thus, our second contribution is the creation of a vector field benchmark data set, which is generally useful for any local deep learning-based feature extraction. Based on Vatistas velocity profile, we formulate a parametric vector field mixture model that we parameterize based on numerically-computed example vector fields in near-steady reference frames. Given the parametric model, we can efficiently synthesize thousands of vector fields that serve as input to our deep learning architecture. The proposed network is evaluated on an unseen numerical fluid flow simulation.
    BibTeX
    @article {10.1111:cgf.13689,
    journal = {Computer Graphics Forum},
    title = {{Robust Reference Frame Extraction from Unsteady 2D Vector Fields with Convolutional Neural Networks}},
    author = {Kim, Byungsoo and Günther, Tobias},
    year = {2019},
    publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
    ISSN = {1467-8659},
    DOI = {10.1111/cgf.13689}
    }
    URI
    https://doi.org/10.1111/cgf.13689
    https://diglib.eg.org:443/handle/10.1111/cgf13689
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    Eurographics Association copyright © 2013 - 2023 
    Send Feedback | Contact - Imprint | Data Privacy Policy | Disable Google Analytics
    Theme by @mire NV
    System hosted at  Graz University of Technology.
    TUGFhA