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Authors: Tim Wu ; Peter Hunter and Kumar Mithraratne

Affiliation: The University of Auckland, New Zealand

Keyword(s): Facial Animation, Anatomical Facial Geometry, Finite Deformation Elasticity, Muscle-driven Model.

Related Ontology Subjects/Areas/Topics: Animation and Simulation ; Computer Vision, Visualization and Computer Graphics ; Facial Animation ; Geometry and Modeling ; Physics-Based Animation ; Solid and Heterogeneous Modeling

Abstract: A detailed high-order (cubic-Hermite) finite element model of the human head was constructed from anatomical data segmented from MR images. The model includes a superficial soft-tissue mesh (skin, subcutaneous layer and superficial musculo-aponeurotic system), 20 muscles of facial expressions and several deep structures. Based on the theory of finite deformation elasticity together with large deformation contact constraints, quasi-static facial expressions were generated by activating transversely isotropic muscles that were accurately depicted by their respective anatomical geometries. Material (muscle-fat) heterogeneity was also introduced to capture the realistic formation of skin folds. Using the described approach, four facial expressions were simulated and compared with the surface data obtained from a 3D structured-light scanner. Predicted expressions showed good agreement with the experimental data.

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Paper citation in several formats:
Wu, T.; Hunter, P. and Mithraratne, K. (2013). Simulating and Validating Facial Expressions using an Anatomically Accurate Biomechanical Model Derived from MRI Data - Towards Fast and Realistic Generation of Animated Characters. In Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications (VISIGRAPP 2013) - GRAPP; ISBN 978-989-8565-46-4; ISSN 2184-4321, SciTePress, pages 267-272. DOI: 10.5220/0004293502670272

@conference{grapp13,
author={Tim Wu. and Peter Hunter. and Kumar Mithraratne.},
title={Simulating and Validating Facial Expressions using an Anatomically Accurate Biomechanical Model Derived from MRI Data - Towards Fast and Realistic Generation of Animated Characters},
booktitle={Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications (VISIGRAPP 2013) - GRAPP},
year={2013},
pages={267-272},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004293502670272},
isbn={978-989-8565-46-4},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications (VISIGRAPP 2013) - GRAPP
TI - Simulating and Validating Facial Expressions using an Anatomically Accurate Biomechanical Model Derived from MRI Data - Towards Fast and Realistic Generation of Animated Characters
SN - 978-989-8565-46-4
IS - 2184-4321
AU - Wu, T.
AU - Hunter, P.
AU - Mithraratne, K.
PY - 2013
SP - 267
EP - 272
DO - 10.5220/0004293502670272
PB - SciTePress