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Emotion Editing using Finite Elements
Author(s) -
Koch Rolf M.,
Gross Markus H.,
Bosshard Albert A.
Publication year - 1998
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 - 10.1111/1467-8659.00276
Subject(s) - facial expression , computer science , abstraction , superposition principle , facial muscles , computer vision , action (physics) , face (sociological concept) , artificial intelligence , computer facial animation , computer graphics (images) , human–computer interaction , computer animation , animation , mathematics , anatomy , medicine , mathematical analysis , social science , philosophy , physics , epistemology , quantum mechanics , sociology
This paper describes the prototype of a facial expression editor. In contrast to existing systems the presented editor takes advantage of both medical data for the simulation and the consideration of facial anatomy during the definition of muscle groups. The C l ‐continuous geometry and the high degree of abstraction for the expression editing sets this system apart from others. Using finite elements we achieve a better precision in comparison to particle systems. Furthermore, a precomputing of facial action units enables us to compose facial expressions by a superposition of facial action geometries in real‐time. The presented model is based on a generic facial model using a thin plate and membrane approach for the surface and elastic springs for facial tissue modeling. It has been used successfully for performing facial surgery simulation. We illustrate features of our system with examples from the Visible Human Dataset.™