Example-Based facial animation for blend shape interpolation

This paper presents a system for example-based character animation using shape interpolation (blend shapes) generated from tracked offline facial feature. First, the subject was recorded expressing various facial expressions (happy, sad, fear, anger, surprise). The recordings were then processed and marked on specific places (feature points) on the face where certain expressions would have the most significant change (the eyes and mouth area). The facial movements, or control parameters, of the human subject are used as movement parameter for the freeform deformation blend shape interpolation.