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Auflistung nach Autor:in "Dewitz, Bastian"

1 - 10 von 11
  • Textdokument
    Acting Beyond Reality – The Role of Schemata in Mixed-Reality Super-Natural Interaction
    (GI VR / AR Workshop 2022, 2022) Dewitz, Bastian; Geiger, Chris; Steinicke, Frank
  • short
    Echtzeit-Fingertracking in Unity 3D durch 3D Convolutional Neural Networks in einem Multi-Depth-Camera-Setup
    (GI VR / AR Workshop, 2021) Dewitz, Bastian; Picker, Tobias; Geiger, Chris; Steinicke, Frank
  • Konferenzbeitrag
    Enacted Selves in Technological Activities – Framework and Case Study in Immersive Telementoring
    (Mensch und Computer 2023 - Tagungsband, 2023) Dewitz, Bastian; Moazemi, Sobhan; Kalkhoff, Sebastian; Kessler, Steven; Geiger, Christian; Steinicke, Frank; Aubin, Hug; Schmid, Falko
    The incorporation of new technology into existing human activities can be challenging. Numerous models have been proposed in human-computer interaction (HCI) to guide research and analyze effects. However, bridging the gap between experimental data and real-world applications often proves to be difficult. In the last decades, post-cognitivistic approaches have been developed to explain human cognition and the relation between humans and their environment. In this paper, we present a novel framework to systematically describe and analyze challenges in the context of HCI from multiple perspectives. It extends Cultural-Historical Activity Theory (CHAT) and is enriched by contemporary philosophical perspectives (enactivism, pattern theory of self and post-phenomenology). The proposed framework is further illustrated by applying it to an immersive telementoring prototype system.
  • Workshopbeitrag
    Enacting Interaction in Virtual Reality
    (GI VR / AR Workshop, 2023) Dewitz, Bastian; Geiger, Christian; Steinicke, Frank
  • Workshopbeitrag
    Erinnerungsfenster für Demenzkranke
    (Mensch und Computer 2015 – Proceedings, 2015) Mertl, Fabian; Dewitz, Bastian; Braas, Uli; Glomb, Arthur; Huldtgren, Alina; Vormann, Anja; Geiger, Christian
    Gerade weniger mobile Menschen mit Demenz haben oft nicht mehr die Möglichkeit, Ihre Lieblingsorte zu besuchen. Da aber gerade diese Orte oftmals zur Erhaltung der Identität dienen, ist es wünschenswert, die Erinnerung an diese zu unterstützen. In einem Projekt zum Thema multimediale Unterstützung von Erinnerungen und Kommunikation bei Demenzkranken wurde ein Erinnerungsfenster entwickelt, das es Menschen mit Demenz erlaubt, personalisierte Fensterausblicke zu erleben. In diesem Artikel beschreiben wir die Entwicklung des Konzeptes, sowie mehrere Iterationen der Entwicklung, in denen in Interviews oder Feldtests Feedback von der Zielgruppe eingeholt wurde.
  • Workshopbeitrag
    Functional Workspace for One-Handed Tap and Swipe Microgestures
    (Mensch und Computer 2019 - Workshopband, 2019) Dewitz, Bastian; Steinicke, Frank; Geiger, Christian
    Single-hand microgestures are a promising interaction concept for ubiquitous and mobile interaction. Due to the technical difficulty of accurately tracking small movements of fingers that are exploited in this type of interface, most research in this field is currently aimed at providing a good foundation for the future application in the real word. One interaction concept of microgestures is one-handed tap and swipe interaction that resembles one-handed interaction with handheld devices like smartphones. In this paper, we present a small study that explores the possible functional workspace of one-handed interaction which describes the area on the palmar surface where tap- and swipe-interaction is possible. Additionally to thumb-to-finger interaction which has been investigated more often, we also considered other fingers. The results show, that thumb interaction with index, ring and middle finger is the most appropriate form of input but other input combinations are under circumstances worth consideration. However, there is a high deviation on which locations can be reached depending on the individual hand anatomy.
  • poster
    Hand-Based Interaction on a Millimeter Scale in Virtual and Augmented Reality
    (GI VR / AR Workshop, 2020) Dewitz, Bastian; Geiger, Christian; Steinicke, Frank
  • Konferenzbeitrag
    Remote Guidance for Machine Maintenance Supported by Physical LEDs and Virtual Reality
    (Mensch und Computer 2019 - Tagungsband, 2019) Ladwig, Philipp; Dewitz, Bastian; Preu, Hendrik; Säger, Mitja
    Machines that are used in industry often require dedicated technicians to fix them in case of defects. This involves travel expenses and certain amount of time, both of which may be significantly reduced by installing small extensions on a machine as we describe in this paper. The goal is that an authorized local worker, guided by a remote expert, can fix the problem on the real machine himself. Our approach is to equip a machine with multiple inexpensive LEDs (light-emitting diodes) and a simple micro controller, which is connected to the internet, to remotely light up certain LEDs, that are close to machine parts of interest. The blinking of an LED can be induced on a virtual 3D model (digital twin) of the machine by a remote expert using a virtual reality application to draw the local worker's attention to certain areas. We conducted an initial user study on this concept with 36 participants and found significantly shorter completion times and less errors for our approach compared to only voice guidance with no visual LED feedback.
  • Textdokument
    Towards 5G Telementoring in VR-Assisted Heart Transplantation Using HoloLens 2
    (GI VR / AR Workshop 2022, 2022) Dewitz, Bastian; Bibo, Roman; Kalkhoff, Sebastian; Moazemi, Sobhan; Liebrecht, Artur; Geiger, Chris; Steinicke, Frank; Aubin, Hug; Schmid, Falko
  • long
    Virtual Visus - Vision Acuity and Text Legibility in Virtual Environments
    (GI VR / AR Workshop, 2021) Dewitz, Bastian; Geiger, Chris; Steinicke, Frank