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    A Four-level Focus + Context Approach to Interactive Visual Analysis of Temporal Features in Large Scientific Data

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    Date
    2008
    Author
    Muigg, Philipp
    Kehrer, Johannes
    Oeltze, Steffen
    Piringer, Harald
    Doleisch, Helmut
    Preim, Bernhard ORCID
    Hauser, Helwig
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    Abstract
    In this paper we present a new approach to the interactive visual analysis of time-dependent scientific data - both from measurements as well as from computational simulation - by visualizing a scalar function over time for each of tenthousands or even millions of sample points. In order to cope with overdrawing and cluttering, we introduce a new four-level method of focus+context visualization. Based on a setting of coordinated, multiple views (with linking and brushing), we integrate three different kinds of focus and also the context in every single view. Per data item we use three values (from the unit interval each) to represent to which degree the data item is part of the respective focus level. We present a color compositing scheme which is capable of expressing all three values in a meaningful way, taking semantics and their relations amongst each other (in the context of our multiple linked view setup) into account. Furthermore, we present additional image-based postprocessing methods to enhance the visualization of large sets of function graphs, including a texture-based technique based on line integral convolution (LIC). We also propose advanced brushing techniques which are specific to the timedependent nature of the data (in order to brush patterns over time more efficiently). We demonstrate the usefulness of the new approach in the context of medical perfusion data.
    BibTeX
    @article {10.1111:j.1467-8659.2008.01207.x,
    journal = {Computer Graphics Forum},
    title = {{A Four-level Focus + Context Approach to Interactive Visual Analysis of Temporal Features in Large Scientific Data}},
    author = {Muigg, Philipp and Kehrer, Johannes and Oeltze, Steffen and Piringer, Harald and Doleisch, Helmut and Preim, Bernhard and Hauser, Helwig},
    year = {2008},
    publisher = {The Eurographics Association and Blackwell Publishing Ltd.},
    ISSN = {1467-8659},
    DOI = {10.1111/j.1467-8659.2008.01207.x}
    }
    URI
    http://dx.doi.org/10.1111/j.1467-8659.2008.01207.x
    Collections
    • 27-Issue 3
    • EuroVis08: Joint Eurographics - IEEE VGTC Symposium on Visualization

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    Eurographics Association copyright © 2013 - 2023 
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