Exploring the Perception of Center of Mass changes for VR Avatars
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Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
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 controllergenerated 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.
Description
CCS Concepts: Computing methodologies → Perception; Physical simulation; Virtual reality
@inproceedings{10.2312:egve.20231316,
booktitle = {ICAT-EGVE 2023 - International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments},
editor = {Jean-Marie Normand and Maki Sugimoto and Veronica Sundstedt},
title = {{Exploring the Perception of Center of Mass changes for VR Avatars}},
author = {Vyas, Bharat and Hoyet, Ludovic and O'Sullivan, Carol},
year = {2023},
publisher = {The Eurographics Association},
ISSN = {1727-530X},
ISBN = {978-3-03868-218-9},
DOI = {10.2312/egve.20231316}
}