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Proceedings Paper

Facial animation on an anatomy-based hierarchical face model
Author(s): Yu Zhang; Edmond C. Prakash; Eric Sung
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Paper Abstract

In this paper we propose a new hierarchical 3D facial model based on anatomical knowledge that provides high fidelity for realistic facial expression animation. Like real human face, the facial model has a hierarchical biomechanical structure, incorporating a physically-based approximation to facial skin tissue, a set of anatomically-motivated facial muscle actuators and underlying skull structure. The deformable skin model has multi-layer structure to approximate different types of soft tissue. It takes into account the nonlinear stress-strain relationship of the skin and the fact that soft tissue is almost incompressible. Different types of muscle models have been developed to simulate distribution of the muscle force on the skin due to muscle contraction. By the presence of the skull model, our facial model takes advantage of both more accurate facial deformation and the consideration of facial anatomy during the interactive definition of facial muscles. Under the muscular force, the deformation of the facial skin is evaluated using numerical integration of the governing dynamic equations. The dynamic facial animation algorithm runs at interactive rate with flexible and realistic facial expressions to be generated.

Paper Details

Date Published: 1 April 2003
PDF: 11 pages
Proc. SPIE 4756, Third International Conference on Virtual Reality and Its Application in Industry, (1 April 2003); doi: 10.1117/12.497747
Show Author Affiliations
Yu Zhang, Nanyang Technological Univ. (Singapore)
Edmond C. Prakash, Nanyang Technological Univ. (Singapore)
Eric Sung, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 4756:
Third International Conference on Virtual Reality and Its Application in Industry

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