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Parametric Generation of Facial Expressions Based on FACS
Author(s) -
Wojdeł A.,
Rothkrantz L. J. M.
Publication year - 2005
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/j.1467-8659.2005.00899.x
Subject(s) - facial action coding system , computer facial animation , computer science , animation , parametric statistics , facial expression , parametric model , artificial intelligence , coding (social sciences) , action (physics) , computer animation , face (sociological concept) , computer vision , computer graphics (images) , mathematics , social science , statistics , physics , quantum mechanics , sociology
This paper presents a parametric performance‐based model for facial animation that was inspired by Facial Action Coding System (FACS) developed by P. Ekman and F. W. Friesen. The FACS consists of 44 Action Units (AUs) corresponding to visual changes on the face. Additionally, predefined co‐occurrence rules describe how different AUs influence each other. In our model, each facial animation parameter corresponds to one of the AUs as defined in FACS. Implementation of the model is completed with methods for accumulating displacement from separate AUs together, and fuzzy‐logical adaptation of co‐occurrence rules from the FACS. We also describe the method for adapting our model to a specific person.