Analysis and Synthesis of Facial Expressions - 3D Modeling and Animation: Synthesis and Analysis Techniques for the Human Body - page 235

Chapter VII
Analysis and Synthesis
of Facial Expressions
Peter Eisert
Fraunhofer Institute for Telecommunications, Germany
Abstract
In this chapter, the state-of-the-art in facial animation and expression
analysis is reviewed and new techniques for the estimation of 3-D human
motion, deformation, and facial expressions from monocular video sequences
are presented. Since illumination has a considerable influence on the
appearance of objects in a scene, methods for the derivation of photometric
scene properties from images are also addressed. For a particular
implementation, the potential of these analysis techniques is illustrated for
applications like character animation and model-based video coding.
Experiments have shown that the usage of 3-D computer models allows
video transmissions at bit-rates of a few kbit/s, enabling a wide variety of
new applications.
Introduction
Facial expression analysis and synthesis techniques have received increasing
interest in recent years. Numerous new applications in the areas of low-bit-rate
communication, user-friendly computer interfaces, the film industry, or medicine