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Auflistung nach Autor:in "Zagermann, Johannes"

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  • Zeitschriftenartikel
    Adapting visualizations and interfaces to the user
    (it - Information Technology: Vol. 64, No. 4-5, 2022) Chiossi, Francesco; Zagermann, Johannes; Karolus, Jakob; Rodrigues, Nils; Balestrucci, Priscilla; Weiskopf, Daniel; Ehinger, Benedikt; Feuchtner, Tiare; Reiterer, Harald; Chuang, Lewis L.; Ernst, Marc; Bulling, Andreas; Mayer, Sven; Schmidt, Albrecht
    Adaptive visualization and interfaces pervade our everyday tasks to improve interaction from the point of view of user performance and experience. This approach allows using several user inputs, whether physiological, behavioral, qualitative, or multimodal combinations, to enhance the interaction. Due to the multitude of approaches, we outline the current research trends of inputs used to adapt visualizations and user interfaces. Moreover, we discuss methodological approaches used in mixed reality, physiological computing, visual analytics, and proficiency-aware systems. With this work, we provide an overview of the current research in adaptive systems.
  • Zeitschriftenartikel
    Complementary interfaces for visual computing
    (it - Information Technology: Vol. 64, No. 4-5, 2022) Zagermann, Johannes; Hubenschmid, Sebastian; Balestrucci, Priscilla; Feuchtner, Tiare; Mayer, Sven; Ernst, Marc O.; Schmidt, Albrecht; Reiterer, Harald
    With increasing complexity in visual computing tasks, a single device may not be sufficient to adequately support the user’s workflow. Here, we can employ multi-device ecologies such as cross-device interaction, where a workflow can be split across multiple devices, each dedicated to a specific role. But what makes these multi-device ecologies compelling? Based on insights from our research, each device or interface component must contribute a complementary characteristic to increase the quality of interaction and further support users in their current activity. We establish the term complementary interfaces for such meaningful combinations of devices and modalities and provide an initial set of challenges. In addition, we demonstrate the value of complementarity with examples from within our own research.
  • Konferenzbeitrag
    IDIAR: Augmented Reality Dashboards to Supervise Mobile Intervention Studies
    (Mensch und Computer 2021 - Tagungsband, 2021) Vock, Katja; Hubenschmid, Sebastian; Zagermann, Johannes; Butscher, Simon; Reiterer, Harald
    Mobile intervention studies employ mobile devices to observe participants’ behavior change over several weeks. Researchers regularly monitor high-dimensional data streams to ensure data quality and prevent data loss (e.g., missing engagement or malfunctions). The multitude of problem sources hampers possible automated detection of such irregularities – providing a use case for interactive dashboards. With the advent of untethered head-mounted AR devices, these dashboards can be placed anywhere in the user’s physical environment, leveraging the available space and allowing for flexible information arrangement and natural navigation. In this work, we present the user-centered design and the evaluation of IDIAR: I nteractive Dashboards in AR, combining a headmounted display with the familiar interaction of a smartphone. A user study with 15 domain experts for mobile intervention studies shows that participants appreciated the multimodal interaction approach. Based on our findings, we provide implications for research and design of interactive dashboards in AR.
  • Konferenzbeitrag
    A Qualitative Comparison Between Augmented and Virtual Reality Collaboration with Handheld Devices
    (Mensch und Computer 2019 - Tagungsband, 2019) Müller, Jens; Zagermann, Johannes; Wieland, Jonathan; Pfeil, Ulrike; Reiterer, Harald
    Handheld Augmented Reality (AR) displays offer a see-through option to create the illusion of virtual objects being integrated into the viewer's physical environment. Some AR display technologies also allow for the deactivation of the see-through option, turning AR tablets into Virtual Reality (VR) devices that integrate the virtual objects into an exclusively virtual environment. Both display configurations are typically available on handheld devices, raising the question of their influence on users' experience during collaborative activities. In two experiments, we studied how the different display configurations influence user experience, workload, and team performance of co-located and distributed collaborators during a spatial referencing task. A mixed-methods approach revealed that participants' opinions were polarized towards the two display configurations, regardless of the spatial distribution of collaboration. Based on our findings, we identify critical aspects to be addressed in future research to better understand and support co-located and distributed collaboration using AR and VR displays.