Langwidere: a new facial animation system

This paper presents Langwidere, a facial animation system that integrates hierarchical spline modeling with simulated muscles based upon local area surface deformations. The multi-level shape representation of a hierarchical spline provides control over the extent of deformations, while at the same time reducing the amount of data needed to define the surface. The facial model is constructed from a single closed surface defining the entire head and internal structures of the mouth cavity. Simulated muscles are attached to various levels of the surface with more rudimentary levels substituting for bone such as the skull and jaw. The combination of a hierarchical model and simulated muscles provides a smooth surface with precise and flexible control over surface shape.<<ETX>>

[1]  C. Pennycuick,et al.  Newton rules biology. A physical approach to biological problems , 1992 .

[2]  David Zeltzer,et al.  Pump it up: computer animation of a biomechanically based model of muscle using the finite element method , 1992, SIGGRAPH.

[3]  Steven D. Pieper,et al.  CAPS: computer-aided plastic surgery , 1992 .

[4]  David R. Forsey,et al.  Hierarchical B-spline refinement , 1988, SIGGRAPH.

[5]  Parke,et al.  Parameterized Models for Facial Animation , 1982, IEEE Computer Graphics and Applications.

[6]  Clea T. Waite,et al.  The facial action control editor, face : a parametric facial expression editor for computer generated animation , 1989 .

[7]  Norman I. Badler,et al.  Animating facial expressions , 1981, SIGGRAPH '81.

[8]  Marie-Luce Viaud,et al.  Facial animation with wrinkles , 1992 .

[9]  Steve DiPaola,et al.  Extending the range of facial types , 1991, Comput. Animat. Virtual Worlds.

[10]  Keith Waters,et al.  A muscle model for animation three-dimensional facial expression , 1987, SIGGRAPH.

[11]  B. Barsky,et al.  An Introduction to Splines for Use in Computer Graphics and Geometric Modeling , 1987 .

[12]  D. R. Forsey,et al.  Local refinement editing of B-spline surfaces , 1989 .

[13]  Demetri Terzopoulos,et al.  Physically-based facial modelling, analysis, and animation , 1990, Comput. Animat. Virtual Worlds.

[14]  David R. Forsey.  Motion control and surface modeling of articulated figures in computer animation , 1992 .

[15]  John P. Lewis,et al.  Automated lip-synch and speech synthesis for character animation , 1987, CHI 1987.

[16]  Keith Waters.  The computer synthesis of expressive three-dimensional facial character animation , 1988 .

[17]  C. Pelachaud.  Communication and coarticulation in facial animation , 1992 .