Browsing by Author "Delahaye, Mathias"

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    Partial Finger Involvement Reflects into Grasping Tasks Performance and Accuracy
    (The Eurographics Association, 2020) Boban, Loën; Delahaye, Mathias; Boulic, Ronan; Kulik, Alexander and Sra, Misha and Kim, Kangsoo and Seo, Byung-Kuk
    This paper presents a user study comparing a grasping algorithm we adapted for the Valve Index controller to common grasping approaches using the HTC Vive Wand or the Oculus Quest's Computer Vision-based finger tracking. It involved 24 participants performing two widely known manipulation tasks for each device: "Pick and Place" and "Grab and Reorient". Our results place our Index Controller approach as a good trade-off between the other two approaches regarding completion time and accuracy.
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    Real-time Self-contact Retargeting of Avatars down to Finger Level
    (The Eurographics Association, 2023) Delahaye, Mathias; Herbelin, Bruno; Boulic, Ronan; Jean-Marie Normand; Maki Sugimoto; Veronica Sundstedt
    We interact with the world through a body that includes hands and fingers. Likewise, providing an avatar allowing the control of a virtual body with fingers is an important step to improve the user experience in VR. When the user and their avatar skeleton and morphology differ, the direct application of the captured user motion on the avatar's skeleton generally induces self-contact conflicts such as undesired interpenetrations or gaps. Hence it is essential to retarget on-the-fly the user's pose to prevent such mismatches. In this paper, we propose a real-time avatar control with self-contact congruency, including finger mobility. The retargeting approach is evaluated through a subjective evaluation procedure, comparing it against a full-body animation using the user's original movement. Our results show that the retargeted animation approach outperforms the avatar control through the sole captured user movement.