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Auflistung nach Autor:in "Trefzger, Mathias"

1 - 4 von 4
  • Textdokument
    1st Workshop on Evaluating Intelligent and Ubiquitous Mobility Systems
    (INFORMATIK 2020, 2021) Titov, Waldemar; Trefzger, Mathias; Schlegel, Thomas
    Evaluation of peoples' mobility and intermodal transport is crucial for understanding mobility and traffic in general and leads to new challenges from the perspective of computer science and especially Human-Computer Interaction.
  • Textdokument
    Analysis and Comparison of the Gaze Behavior of E-Scooter Drivers and Cyclists
    (INFORMATIK 2020, 2021) Trefzger, Mathias; Titov, Waldemar; Schlegel, Thomas
    In this paper, we contribute an eye tracking study to evaluate the gaze behavior of e-scooter drivers and cyclists on high and low quality road surfaces. We recorded the surface quality with sensors and put the different surfaces in relation to the gaze behavior. We recorded eye movements of the participants and performed an Area of Interest (AOI) sequence analysis to identify gaze patterns. Found sequences show that on the high quality surface participants focused most commonly the distant road section and then shifted to nearer sections. Individual advantageous gaze sequences are omitted if the surface is poor. We found a significant difference in the attention distribution of the two means of transport. In addition, we can confirm previous results showing that low quality road surfaces cause the gaze to shift forward. However, the participants did not adapt their speed to the worse surface.
  • Konferenzbeitrag
    Mobile AR in the Wild: Exploring an Augmented Reality Concept for a Nature Discovery Path and evaluating its Serious Game Elements
    (Mensch und Computer 2023 - Tagungsband, 2023) Trefzger, Mathias; Schlegel, Thomas
    This short paper presents the concept for an Augmented Reality (AR) nature trail application aimed at enhancing the user's experience and interaction with the natural environment. The app leverages the capabilities of modern smartphones and AR technology to overlay digital elements onto the real world, providing users with an immersive and educational experience. The research focuses on evaluating the concept and the app prototype itself with its different elements and games. A main goal of the app is to appeal to a teenage target group in order to interest them in visiting the nature discovery trail. Our results show that they enjoy using the app when being on site as part of a school trip for example. But for most teenage participants it is unlikely to visit the nature trail in their free time because of the app. The study serves as a first step to gather an overall concept how the different app elements are perceived. Initial findings indicate that different user groups have preferences relating the app elements and games. For example, the above average tech-savvy participants in our experiment rated the implemented quiz significantly better than the below average tech-savvy group. The paper also presents the subjective assessment of the participants how much they learned with the app, if they thought the app to be distracting them from the surroundings and more. The paper also highlights some challenges encountered during the development process and outlines future directions for improvement and expansion. Overall, this study presents an encouraging glimpse into the potential of AR technology to enhance nature experiences and promote environmental education.
  • Konferenzbeitrag
    What does it Take to Test a Bicycle Simulator for Realism? A Discussion of the Challenges and Possible Evaluation Methods
    (Proceedings of Mensch und Computer 2024, 2024) Trefzger, Mathias; Raschke, Michael; Fath, Michael; Eckart, Jochen
    In recent years, bicycle simulators have become increasingly important as a research tool, resulting in a large number of new prototypes at various academic institutions. In order for the results of studies to be transferred from a simulator to reality, it is necessary to ensure that simulators reproduce realistic traffic behaviour. Most bicycle simulators are evaluated using cycling parameters. However, the (combined) use of other methods is necessary to ensure realism. In this paper we present a variety of evaluation methods and discuss why we consider them relevant for evaluating the realism. We present the challenges and potential and the study design of our current study comparing cycling behaviour in reality and in simulation. Our study design should serve as a reference for other researchers and facilitate their own research. This paper contributes to the motivation of new and future work in the still young field of cycling simulation.