Exploring the Perception of Center of Mass changes for VR Avatars - Inria - Institut national de recherche en sciences et technologies du numérique
Conference Papers Year : 2023

Exploring the Perception of Center of Mass changes for VR Avatars

Bharat Vyas
Ludovic Hoyet
Carol O'Sullivan

Abstract

Populating Virtual Environments with animated virtual characters often involves retargeting motions to 3D body models with differing shapes. A user’s avatar, for example, should move in a way that is consistent with their model’s body shape in order to maintain the sense of presence. We present a set of perception experiments to explore how motions captured from actors with various body mass indices (BMI) are perceived, when they are retargeted to characters with different BMIs. We also explored the perceptual effects of retargeting average and physics-based motions. To explore the latter, we devised a physics-based controller framework that utilizes motion, target body weight, and height as inputs to generate retargeted motions. Despite the controller generating varied motions for various body shapes, average motions consistently outperformed the controller-generated motions in terms of naturalness. Overall, this work highlights an anthropometric based physics controller and a novel approach for perceptual evaluation of human motion retargeting for virtual characters.
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hal-04384410 , version 1 (10-01-2024)

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Bharat Vyas, Ludovic Hoyet, Carol O'Sullivan. Exploring the Perception of Center of Mass changes for VR Avatars. ICAT-EGVE 2023 - International Conference on Artificial Reality and Telexistence & Eurographics Symposium on Virtual Environments, Dec 2023, Dublin, France. pp.1-12, ⟨10.2312/egve.20231316⟩. ⟨hal-04384410⟩
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