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research-article

Leveraging depth cameras and wearable pressure sensors for full-body kinematics and dynamics capture

Published: 19 November 2014 Publication History

Abstract

We present a new method for full-body motion capture that uses input data captured by three depth cameras and a pair of pressure-sensing shoes. Our system is appealing because it is low-cost, non-intrusive and fully automatic, and can accurately reconstruct both full-body kinematics and dynamics data. We first introduce a novel tracking process that automatically reconstructs 3D skeletal poses using input data captured by three Kinect cameras and wearable pressure sensors. We formulate the problem in an optimization framework and incrementally update 3D skeletal poses with observed depth data and pressure data via iterative linear solvers. The system is highly accurate because we integrate depth data from multiple depth cameras, foot pressure data, detailed full-body geometry, and environmental contact constraints into a unified framework. In addition, we develop an efficient physics-based motion reconstruction algorithm for solving internal joint torques and contact forces in the quadratic programming framework. During reconstruction, we leverage Newtonian physics, friction cone constraints, contact pressure information, and 3D kinematic poses obtained from the kinematic tracking process to reconstruct full-body dynamics data. We demonstrate the power of our approach by capturing a wide range of human movements and achieve state-of-the-art accuracy in our comparison against alternative systems.

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    cover image ACM Transactions on Graphics
    ACM Transactions on Graphics  Volume 33, Issue 6
    November 2014
    704 pages
    ISSN:0730-0301
    EISSN:1557-7368
    DOI:10.1145/2661229
    Issue’s Table of Contents
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Publication History

    Published: 19 November 2014
    Published in TOG Volume 33, Issue 6

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    Author Tags

    1. full body shape modeling
    2. human body tracking
    3. motion capture
    4. physics-based modeling

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    • (2024)MMVP: A Multimodal MoCap Dataset with Vision and Pressure Sensors2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)10.1109/CVPR52733.2024.02063(21842-21852)Online publication date: 16-Jun-2024
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