Sidney Bovet

Logitech (Switzerland)

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i-10 index

Research Trends

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Document Type

Co-Authors

Ronan Boulic

École Polytechnique Fédérale de Lausanne

Aidan Kehoe

University College Cork

Mario Gutiérrez

Logitech (Switzerland)

Henrique Galvan Debarba

IT University of Copenhagen

Bruno Herbelin

École Polytechnique Fédérale de Lausanne

Eray Molla

École Polytechnique Fédérale de Lausanne

Thomas Rouvinez

Logitech (Switzerland)

Damien O Sullivan

Logitech (Switzerland)

Stephen Brewster

University of Glasgow

Mark McGill

University of Glasgow

Cooperative Institutions

École Polytechnique Fédérale de Lausanne

Logitech (Switzerland)

Human Computer Interaction (Switzerland)

University College Cork

University of Glasgow

Wyss Center for Bio and Neuroengineering

École Normale Supérieure - PSL

Aalborg University

University College London

Laboratoire d'Informatique Fondamentale de Lille

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Creating and Augmenting Keyboards for Extended Reality with the K eyboard A ugmentation T oolkit

ACM Transactions on Computer-Human Interaction (2022)

Mark McGill Stephen Brewster Daniel Medeiros Sidney Bovet Mario Gutiérrez

This article discusses the Keyboard Augmentation Toolkit (KAT), which supports the creation of virtual keyboards that can be used both for standalone input (e.g., for mid-air text entry) and to augment physically tracked keyboards/surfaces in mixed reality. In a user study, we firstly examine the impact and pitfalls of visualising shortcuts on a tracked physical keyboard, exploring the utility of virtual per-keycap displays. Supported by this and other recent developments in XR keyboard research, we then describe the design, development, and evaluation-by-demonstration of KAT. KAT simplifies the creation of virtual keyboards (optionally bound to a tracked physical keyboard) that support enhanced display —2D/3D per-key content that conforms to the virtual key bounds; enhanced interactivity —supporting extensible per-key states such as tap, dwell, touch, swipe; flexible keyboard mappings that can encapsulate groups of interaction and display elements, e.g., enabling application-dependent interactions; and flexible layouts —allowing the virtual keyboard to merge with and augment a physical keyboard, or switch to an alternate layout (e.g., mid-air) based on need. Through these features, KAT will assist researchers in the prototyping, creation and replication of XR keyboard experiences, fundamentally altering the keyboard’s form and function.

Interactivity

SwIPe

Merge (version control)

Virtual keyboard

Text entry

Input device

10.1145/3490495

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Citations (15)

Characterizing first and third person viewpoints and their alternation for embodied interaction in virtual reality

PLoS ONE (2017)

Henrique Galvan Debarba Sidney Bovet Roy Salomon Olaf Blanke Bruno Herbelin

Empirical research on the bodily self has shown that the body representation is malleable, and prone to manipulation when conflicting sensory stimuli are presented. Using Virtual Reality (VR) we assessed the effects of manipulating multisensory feedback (full body control and visuo-tactile congruence) and visual perspective (first and third person perspective) on the sense of embodying a virtual body that was exposed to a virtual threat. We also investigated how subjects behave when the possibility of alternating between first and third person perspective at will was presented. Our results support that illusory ownership of a virtual body can be achieved in both first and third person perspectives under congruent visuo-motor-tactile condition. However, subjective body ownership and reaction to threat were generally stronger for first person perspective and alternating condition than for third person perspective. This suggests that the possibility of alternating perspective is compatible with a strong sense of embodiment, which is meaningful for the design of new embodied VR experiences.

Third person

Alternation (linguistics)

Viewpoints

Congruence (geometry)

Immersion

10.1371/journal.pone.0190109

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Citations (130)

Using Traditional Keyboards in VR: SteamVR Developer Kit and Pilot Game User Study

Sidney Bovet Aidan Kehoe Katie Crowley Noirin Curran Mario Gutiérrez

Following the commercial release of VR systems like HTC Vive and Oculus Rift to mainstream consumers, academic publications have explored the challenges of text entry in virtual reality. This paper describes a commercial developer kit that enables text entry using a traditional physical keyboard for HTC Vive. The paper gives a high-level system overview and presents the results of a pilot study exploring initial use of the devkit for typing in VR, focused on how users learn to adapt to this new VR text entry experience. The pilot study explored the use of a VR mini-game with the goal of helping users get familiar with VR typing.

Mainstream

Text entry

10.1109/gem.2018.8516449

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Citations (28)

The Critical Role of Self-Contact for Embodiment in Virtual Reality

IEEE Transactions on Visualization and Computer Graphics (2018)

Sidney Bovet Henrique Galvan Debarba Bruno Herbelin Eray Molla Ronan Boulic

With the broad range of motion capture devices available on the market, it is now commonplace to directly control the limb movement of an avatar during immersion in a virtual environment. Here, we study how the subjective experience of embodying a full-body controlled avatar is influenced by motor alteration and self-contact mismatches. Self-contact is in particular a strong source of passive haptic feedback and we assume it to bring a clear benefit in terms of embodiment. For evaluating this hypothesis, we experimentally manipulate self-contacts and the virtual hand displacement relatively to the body. We introduce these body posture transformations to experimentally reproduce the imperfect or incorrect mapping between real and virtual bodies, with the goal of quantifying the limits of acceptance for distorted mapping on the reported body ownership and agency. We first describe how we exploit egocentric coordinate representations to perform a motion capture ensuring that real and virtual hands coincide whenever the real hand is in contact with the body. Then, we present a pilot study that focuses on quantifying our sensitivity to visuo-tactile mismatches. The results are then used to design our main study with two factors, offset (for self-contact) and amplitude (for movement amplification). Our main result shows that subjects' embodiment remains important, even when an artificially amplified movement of the hand was performed, but provided that correct self-contacts are ensured.

Avatar

Motion Capture

Immersion

Sense of Agency

10.1109/tvcg.2018.2794658

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Citations (54)