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Auflistung nach Schlagwort "avatars"

1 - 8 von 8
  • Workshopbeitrag
    Brain 2 Communicate: EEG-based Affect Recognition to Augment Virtual Social Interactions
    (Mensch und Computer 2019 - Workshopband, 2019) Roth, Daniel; Westermeier, Franziska; Brübach, Larissa; Feigl, Tobias; Schell, Christian; Latoschik, Marc Erich
    The perception and expression of emotion is a fundamental part of social interaction. This project aims to utilize neuronal signals to augment avatar-mediated communications. We recognize emotions with a brain-computer-interface (BCI) and supervised machine learning. Using an avatar-based communication interface that supports head tracking, gaze tracking, and speech to animation, we leverage the BCI-based affect detection to visualize emotional states.
  • Konferenzbeitrag
    The effects of consultant avatar size and dynamics on customer trust in online consultations
    (Mensch und Computer 2020 - Tagungsband, 2020) Brown, Gordon; Prilla, Michael
    This study investigates the impact of avatars on interactions between customers and consultants in remote, online consultations supported by Augmented Reality (AR). Based on past research, we were interested whether the appearance of an avatar and its dynamics affect important factors for online consultations such as social presence, trust in the consultant and perceived customer satisfaction. In particular, we chose avatar size and dynamics (movement/gaze) to compare different avatars in a 2x2 experiment, in which customers wear AR head mounted devices to consult a remotely located consultant in a mock furniture consultation session. Our results show no significant differences in trust and satisfaction, but significantly different levels of perceived social presence for life-sized, dynamic avatars as well as significantly higher co-presence for all life-sized avatars. Additional data from interviews with the participants revealed a clear preference for dynamic avatars over static ones. Based on an analysis of these findings, we make design recommendations and suggest directions for future research.
  • Workshopbeitrag
    Product Experience Wall: A Context-adaptive Outfit Recommender System
    (Mensch & Computer 2014 - Tagungsband, 2014) Zagel, Christian
    This paper presents research in progress and describes the concept of the so called „Product Experience Wall“, an interactive and context-adaptive outfit recommendation system for retail fashion stores. The goal is to design an experiential system that serves both, functional and hedonic needs. Context adaption allows pro-actively approaching the user and recommending products based on the respective user context. Next to face detection algorithms, we use RFID sensors and interfaces to external data sources (e.g., weather information) to create a unique customer experience. This experience is furthermore supported by displaying product combinations on virtual, life-size avatars. The core functionality of the concept is based on the findings of 32 qualitative customer interviews.
  • Workshopbeitrag
    Towards an Investigation of Avatars’ Sweat Effects during Physical Exertion in Virtual Reality
    (Mensch und Computer 2021 - Workshopband, 2021) Kocur, Martin; Henze, Niels; Schwind, Valentin
    An avatar’s athletic appearance can affect users’ perceptual and physiological responses to physical exertion in virtual reality (VR). Although sweating during physical effort is a natural human response, it is currently unknown whether and how visualizing sweat on an avatar’s skin affects the user while exercising in VR. Therefore, we plan to conduct a study with 30 participants to explore the impact of an avatar’s sweating on users’ physical performance and perception of effort while cycling in VR. We expect that visualizing sweat increases the perceived effort and decreases physical performance as sweating is associated with physical strain and fatigue. Hence, we assume that the avatars’ sweat could contribute to a more vivid and realistic VR exercise experience on the one hand, but also result in adverse effects on the users’ physical performance on the other.
  • Workshopbeitrag
    Towards an Investigation of Embodiment Time in Virtual Reality
    (Mensch und Computer 2020 - Workshopband, 2020) Kocur, Martin; Roth, Daniel; Schwind, Valentin
    Virtual Reality (VR) allows us to embody any possible appearance using avatars. Previous work found that the visual appearance of an avatar can affect the user’s behavior – a phenomenon known as the Proteus effect. The illusory feeling of owning a virtual avatar – the body ownership illusion – modulates the Proteus effect. Prior investigations revealed that the time of how long users embody an avatar can affect the extent of the body ownership illusion, however, it is currently unknown whether and how behavioral changes caused by the Proteus effect are moderated by the embodiment time. Therefore, we are planning to conduct a study with 30 participants where we induce the Proteus effect using avatars of different perceived ages to evaluate the effect of embodiment time on walking speed. We hypothesize that the longer users embody an elderly avatar, the slower they will walk in VR. In this proposal, we suggest a study design to evaluate the effect of embodiment time on the body ownership illusion and behavioral changes caused by the Proteus effect in VR.
  • Konferenzbeitrag
    Understanding Visual-Haptic Integration of Avatar Hands using a Fitts' Law Task in Virtual Reality
    (Mensch und Computer 2019 - Tagungsband, 2019) Schwind, Valentin; Leusmann, Jan; Henze, Niels
    Virtual reality (VR) is becoming more and more ubiquitous to interact with digital content and often requires renderings of avatars as they enable improved spatial localization and high levels of presence. Previous work shows that visual-haptic integration of virtual avatars depends on body ownership and spatial localization in VR. However, there are different conclusions about how and which stimuli of the own appearance are integrated into the own body scheme. In this work, we investigate if systematic changes of model and texture of a users' avatar affect the input performance measured in a two-dimensional Fitts' law target selection task. Interestingly, we found that the throughput remained constant between our conditions and that neither model nor texture of the avatar significantly affected the average duration to complete the task even when participants felt different levels of presence and body ownership. In line with previous work, we found that the illusion of virtual limb-ownership does not necessarily correlate to the degree to which vision and haptics are integrated into the own body scheme. Our work supports findings indicating that body ownership and spatial localization are potentially independent mechanisms in visual-haptic integration.
  • Workshopbeitrag
    User-embodied Interaction in Virtual Reality (UIVR)
    (Mensch und Computer 2019 - Workshopband, 2019) Roth, Daniel; Podkosova, Iana; Nilsson, Niels Christian; Kulik, Alexander; Bruder, Gerd
    The availability of tracking solutions allowing for the embodiment of users in Virtual- Mixed- and Augmented Reality (VR/MR/AR) applications challenges human-computer interaction (HCI) developers. Many potentials are yet to be explored. By no means is the most realistic replication of the user and the interaction a general optimum for all applications. In turn, altered body representations have perceptual impacts on the users themselves as well as on the perception of the interaction (“Kleider machen Leute”). To support a discussion and the generation of a common agenda, we will organize a half-day workshop on User-embodied Interaction in VR (UIVR) gathering researchers and practitioners emphasizing the discussion of different positions on applications and findings to collect guidelines for future developments.
  • Workshopbeitrag
    User-Embodied Interaction in Virtual Reality (UIVR)
    (Mensch und Computer 2020 - Workshopband, 2020) Roth, Daniel; Podkosova, Iana; Nilsson, Niels Christian; Kulik, Alexander; Bruder, Gerd
    The representation of users is specifically important for Virtual/Mixed/Augmented Reality (VR/MR/AR) applications. The development of technological solutions and the understanding of underlying cognitive effects challenges humancomputer interaction (HCI) and related disciplines. A number of interesting research questions, such as realism of appearance and behavior as well as their effects on perception and user behavior arise, that are yet to be explored. To support a discussion and the generation of a common agenda, we will organize a half-day workshop on User-Embodied Interaction in VR (UIVR) gathering researchers and practitioners emphasizing the discussion of different positions on applications and findings to collect guidelines for future developments.