Expressive rendering and animation

Facial expression is a rather complex system. It results from muscle contraction. Wrinkles often appear on the face and tend to occur as the results of some facial expressions. They are definitely part of the expression. FACS describes, for each AU, not only the changes due to muscle contraction but also wrinkle appearance. As facial […]

Modeling Multimodal Behaviors From Speech Prosody

To synthesize the head and eyebrow movements of virtual characters, we have developed a fully parameterized Hidden Markov Model (FPHMM), an extension of a Contextual HMM (CHMM). We have first learned a FPHMM that takes speech features as contextual variables and that produces motion features observation. During the training phase, motion and speech streams are […]