Category - A party
2 previous work our system differs from much previous work in facial animation, such as that of lee et al. 2, in that we are not synthesizing animations using a physical or procedural model of the face. Instead, we capture facial movements in three dimensions and then replay them. Published in the journal of visualization and computer animation, 1(2)7380, 1990. Physically-based facial modeling, analysis, and animation demetri terzopoulos y z and keith waters y schlumberger laboratory for computer science, p. Box 200015, austin, tx 78720 z department of computer science, university of toronto, toronto, ontario, m5s 1a4 abstract we develop a new 3d hierarchical. Computer facial animation is primarily an area of computer graphics that encapsulates methods and techniques for generating and animating images or models of a character face. The character can be a human, a humanoid, an animal, a legendary creature or character, etc. Due to its subject and output type, it is also related to many other scientific and artistic fields from psychology to. Realistic modeling for facial animation yuencheng lee1, demetri terzopoulos1, and keith waters2 university of toronto1 and digital equipment corporation2 abstract a major unsolved problem in computer graphics is the construc-tion and animation of realistic human facial models. A survey of facial modeling and animation techniques jun-yong noh integrated media systems center, university of southern california jnohcs. Edu ulrich neumann integrated media systems center, university of southern california uneumanngraphics. Edu abstract realistic facial animation is achieved through geometric and image manipulations. Facial animation and modeling computer graphics group, mpi informatik, saarbrücken, germany introduction animation of human faces has been an active. New images can be generated from these sample images using image-based modeling and rendering techniques. The goal of these techniques is to reconstruct a continuous image function using a set of sample images. Thus the original samples can be interpolated or extrapolated to produce novel images. The model is efficient enough to produce facial animation at interactive rates on a highend graphics workstation. These estimates may be input as dynamic control parameters to the face model in order to produce realistic animation. this paper provides a comprehensive survey on the techniques for human facial modeling and animation. The survey is carried out from two different perspectives facial modeling, which concerns how to produce 3d face models, and facial animation, which regards how to synthesize dynamic facial expressions. A major unsolved problem in computer graphics is the construction and animation of realistic human facial models. Traditionally, facial models have been built painstakingly by manual digitization and animated by ad hoc parametrically controlled facial mesh deformations or kinematic approximation of muscle actions. Fortunately, animators are now able to digitize facial geometries through the.