The Visual Computer, vol. 11, no. 2, 1994, pp 87-95.

Modeling and Animation of Facial Expressions

based on B-Splines

Michael Hoch *), Georg Fleischmann *), Bernd Girod **)

*) Academy of Media Arts
Dept. of Computer Graphics
Peter-Welter-Platz 2, 50676 Cologne, Germany
email: micha@khm.de

**) Institute for Telecommunications
University Erlangen-Nuremberg
Erlangen, Germany

Abstract
This paper describes a technique for the automatic adaptation of a canonical facial model to data obtained by a 3D laser-scanner. The facial model is a B-spline surface with 13x16 control points. We introduce a technique by which this canonical model is fit to the scanned data and that takes into consideration the requirements for the animation of facial expressions. The animation of facial expressions is based on the Facial Action Coding System (FACS). Using B-splines in combination with FACS we automatically create the impression of a moving skin. To increase the realism of the animation we map textural information onto the B-spline surface.

Key words: B-spline Surfaces - Surface Fitting - Facial Animation - FACS - 3D Digitizing

	Laser scanner data and generated B-spline mask.
	facial expressions generated using the automatically generated B-spline mask with texture mapping