Modeling human facial expressions at multiple resolutions

Human facial expression modeling has been an active research area. Most of the existing systems do not provide an easy way to adjust the model such that different levels of detail of expressions can be modeled. We propose a method for modeling human facial expressions at different resolutions. Our method is based on the facial action coding system (FACS) developed by Ekman and Freisen (1977). Although the facial expressions we are mainly interested in are those related to speech either directly or indirectly, the modeling method can be extended to apply to facial expressions that are not related to speech.