Browsing by Author "Klein, Karsten"

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    GAV-VR: An Extensible Framework for Graph Analysis and Visualisation in Virtual Reality
    (The Eurographics Association, 2023) Kerle-Malcharek, Wilhelm; Feyer, Stefan Paul; Schreiber, Falk; Klein, Karsten; Jean-Marie Normand; Maki Sugimoto; Veronica Sundstedt
    The investigation of interactive graph visualisation in stereoscopic 3D has recently gained increasing attention due to promising initial results and the broad availability of required hardware such as Virtual Reality (VR) headsets. While various software frameworks and libraries for (interactive) graph visualisation in 2D exist, there is a lack of corresponding frameworks supporting VR. This hampers the exploration of design choices and the comparison of approaches, especially for the benefits of virtual environments, slows down the development of novel methods, and requires additional effort from researchers to perform these investigations. We present GAV-VR, a framework for interactive visualisation and analysis of graphs in VR. GAV-VR has a modular architecture to support easy integration of visualisation and analysis method implementations. In this work, we elaborate on the framework's architecture and showcase possible use cases.
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    Immersive Analytics with Abstract 3D Visualizations: A Survey
    (© 2022 Eurographics ‐ The European Association for Computer Graphics and John Wiley & Sons Ltd, 2022) Kraus, Matthias; Fuchs, Johannes; Sommer, Björn; Klein, Karsten; Engelke, Ulrich; Keim, Daniel; Schreiber, Falk; Hauser, Helwig and Alliez, Pierre
    After a long period of scepticism, more and more publications describe basic research but also practical approaches to how abstract data can be presented in immersive environments for effective and efficient data understanding. Central aspects of this important research question in immersive analytics research are concerned with the use of 3D for visualization, the embedding in the immersive space, the combination with spatial data, suitable interaction paradigms and the evaluation of use cases. We provide a characterization that facilitates the comparison and categorization of published works and present a survey of publications that gives an overview of the state of the art, current trends, and gaps and challenges in current research.