Generation of Facial Expressions from Emotion Using a Fuzzy Rule Based System

We propose a fuzzy rule-based system to map representations of the emotional state of an animated agent onto muscle contraction values for the appropriate facial expressions. Our implementation pays special attention to the way in which continuous changes in the intensity of emotions can be displayed smoothly on the graphical face. The rule system we have defined implements the patterns described by psychologists and researchers dealing with facial expressions of humans, including rules for displaying blends of expressions.

[1]  Han Noot,et al.  A Facial Repertoire for Avatars , 2000 .

[2]  Chuen-Chien Lee.  FUZZY LOGIC CONTROL SYSTEMS: FUZZY LOGIC CONTROLLER - PART I , 1990 .

[3]  Fuzzy Logic in Control Systems : Fuzzy Logic , 2022 .

[4]  R. Plutchik.  The emotions: Facts, theories and a new model. , 1964 .

[5]  Keith Waters,et al.  Computer facial animation , 1996 .

[6]  Ken Perlin,et al.  Improv: a system for scripting interactive actors in virtual worlds , 1996, SIGGRAPH.

[7]  C. Izard.  The face of emotion , 1971 .

[8]  Antinus Nijholt,et al.  A natural language web-based dialogue system with a talking face , 1998 .

[9]  Ken Perlin,et al.  Layered compositing of facial expression , 1997, SIGGRAPH '97.

[10]  D. Gelernter.  The Muse in the Machine , 1994 .

[11]  Andrew Stern,et al.  Virtual petz (video session): a hybrid approach to creating autonomous, lifelike dogz and catz , 1998, AGENTS '98.

[12]  Aldo Paradiso,et al.  A Model for the Generation and Combination of Emotional Expressions , 2001 .

[13]  Dirk Heylen,et al.  Inhabited interfaces: Attentive conversational agents that help , 2000 .

[14]  C. Izard.  The psychology of emotions , 1991 .

[15]  Barbara Hayes-Roth,et al.  Story-marking with improvisational puppets , 1997, AGENTS '97.

[16]  B. Hayes-Roth,et al.  Story-Making with Improvisational Puppets and Actors , 1996 .

[17]  A N Gilbert,et al.  Emotions and facial expression. , 1985, Science.

[18]  P. Ekman.  Unmasking The Face , 1975 .

[19]  Catherine Pelachaud,et al.  TALKING HEADS: Physical, Linguistic and Cognitive Issues in Facial Animation , 1995 .

[20]  Ben Resner,et al.  Virtual Petz: A Hybrid Approach to Creating Autonomous, Lifelike Dogz and Catz. , 1998 .

[21]  Anton Nijholt,et al.  Simulation of emotions of agents in virtual environments using neural networks , 2000 .