Browsing by Author "Blascheck, Tanja"

Now showing 1 - 4 of 4
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    Gaze-Aware Visualisation: Design Considerations and Research Agenda
    (The Eurographics Association and John Wiley & Sons Ltd., 2025) Jianu, Radu; Silva, Nelson; Rodrigues, Nils; Blascheck, Tanja; Schreck, Tobias; Weiskopf, Daniel; Wimmer, Michael; Alliez, Pierre; Westermann, Rüdiger
    Eye tracking provides a unique perspective on the inherently visual discourse between visualisation systems and their users, and has recently become sufficiently precise and affordable to be integrated as regular input into workstations and virtual or augmented reality headsets alike. As such, real-time eye tracking can now contribute significantly towards the development of gaze-aware visualisations that infer and monitor users' needs to actively support their activities. To facilitate such systems we make three contributions. First, we structure and discuss design considerations for gaze-aware visualisations along four axes: measurable data; inferable data; opportunities for support; and limiting factors to beware. Second, we distill visualisation research challenges that preclude such systems. Finally, we show via three usage scenarios how to apply these design considerations to imagine how existing systems can benefit from real-time eye tracking. We combined a structured literature analysis, a consideration of suitable places for eye-tracking integration in the typical visualisation ecosystem, and design space modelling. Eye tracking has significant potential to improve the interactive visual analysis of data across many visualisation domains. Our paper attempts to provide a comprehensive, general survey and conceptual discussion in this promising field, outlining the state-of-the-art and future research opportunities.
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    Personal Mobile Devices to Assist with Wrist Rehabilitation at Home
    (The Eurographics Association, 2024) Grioui, Fairouz; Antoniadis, Pantelis; Yu, Xingyao; Blascheck, Tanja; Kucher, Kostiantyn; Diehl, Alexandra; Gillmann, Christina
    We present two modalities using mobile devices to assist patients with home-based wrist rehabilitation exercises. The first modality is a standalone smartwatch application that tracks the wrist's Range of Motion (ROM) and visualizes real-time exercise data. The second modality uses a smartphone to mirror the visualizations displayed on the smartwatch to overcome screen invisibility while rotated. In this poster, we report on our pilot study and the qualitative results of the two solutions. Results show that in terms of usability, the smartwatch-only modality score surpassed the mirrored-display. However, participants preferred the mirrored-display modality more for home-based usage.
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    Visualizing Temporal-Thematic Patterns in Text Collections
    (The Eurographics Association, 2021) Knabben, Moritz; Baumann, Martin; Blascheck, Tanja; Ertl, Thomas; Koch, Steffen; Andres, Bjoern and Campen, Marcel and Sedlmair, Michael
    Visualizing the temporal evolution of texts is relevant for many domains that seek to gain insight from text repositories. However, existing visualization methods for text collections do not show fine-grained temporal-thematic patterns. Therefore, we developed and analyzed a new visualization method that aims at uncovering such patterns. Specifically, we project texts to one dimension, which allows positioning texts in a 2D diagram of projection space and time. For projection, we employed two manifold learning algorithms: the self-organizing map (SOM) and UMAP. To assess the utility of our method, we experimented with real-world datasets and discuss the resulting visualizations. We find our method facilitates relating patterns and extracting associated texts beyond what is possible with previous techniques. We also conducted interviews with historians to show that our prototypical system supports domain experts in their analysis tasks.
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    Weather Data and Representations: A Survey of Wear OS Apps
    (The Eurographics Association, 2024) Rohwer, Jakob; Grioui, Fairouz; Blascheck, Tanja; Kucher, Kostiantyn; Diehl, Alexandra; Gillmann, Christina
    In this poster, we inspect common weather applications developed for Android Wear OS Smartwatches. Our goal is to learn (1) which type of weather data is commonly depicted in weather applications, (2) how this data is represented, and (3) how smartwatch wearers can interact with these applications. Based on this survey, we plan to develop glanceable weather visualizations that contain appropriate interactions. The current state of weather applications depicts a large number (15) of different weather data types; however, few use visual representations like bar charts (1), radial bar charts (2), or maps (4).