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Authors: Daniel Raunhardt and Ronan Boulic

Affiliation: VRLAB, Ecole Polytechnique Fédérale de Lausanne, Switzerland

Keyword(s): Inverse kinematics, joint coupling, human modeling, articulated figure.

Related Ontology Subjects/Areas/Topics: Animation and Simulation ; Computer Vision, Visualization and Computer Graphics ; Human Figure Animation ; Plausible Motion Simulation

Abstract: In this paper we propose a simple model for the coupling behavior of the human spine that is capable of exhibiting anatomically correct motions of the vertebrae in virtual mannequins. Such a model transparently integrates in our inverse kinematics framework as it couples standard swing and revolute joint models. The adjustment of the joints due to the coupling is made with several simple (in)equality constraints, resulting in a reduction of the solution space dimensionality for the inverse kinematics solver. A key benefit is to prevent the inverse kinematics algorithm from providing infeasible postures. We exploit how to apply these simple constraints to the human spine by a strict decoupling of the swing and twist motion of the vertebrae and demonstrate the validity of our approach on various experiments.

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Paper citation in several formats:
Raunhardt, D. and Boulic, R. (2007). EXPLOITING COUPLED JOINTS - Anatomic Control of the Spine with IK Through Linearly Coupled Joints. In Proceedings of the Second International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2007) - Volume 1: GRAPP; ISBN 978-972-8865-72-6; ISSN 2184-4321, SciTePress, pages 13-20. DOI: 10.5220/0002077900130020

@conference{grapp07,
author={Daniel Raunhardt. and Ronan Boulic.},
title={EXPLOITING COUPLED JOINTS - Anatomic Control of the Spine with IK Through Linearly Coupled Joints},
booktitle={Proceedings of the Second International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2007) - Volume 1: GRAPP},
year={2007},
pages={13-20},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002077900130020},
isbn={978-972-8865-72-6},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the Second International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2007) - Volume 1: GRAPP
TI - EXPLOITING COUPLED JOINTS - Anatomic Control of the Spine with IK Through Linearly Coupled Joints
SN - 978-972-8865-72-6
IS - 2184-4321
AU - Raunhardt, D.
AU - Boulic, R.
PY - 2007
SP - 13
EP - 20
DO - 10.5220/0002077900130020
PB - SciTePress

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