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Efficient lip‐synch tool for 3D cartoon animation
Author(s) -
Kawamoto Shinichi,
Yotsukura Tatsuo,
Anjyo Ken,
Nakamura Satoshi
Publication year - 2008
Publication title -
computer animation and virtual worlds
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.225
H-Index - 49
eISSN - 1546-427X
pISSN - 1546-4261
DOI - 10.1002/cav.250
Subject(s) - computer science , character animation , animation , viseme , computer facial animation , computer animation , computer graphics (images) , skeletal animation , interactive skeleton driven simulation , set (abstract data type) , artificial intelligence , computer vision , character (mathematics) , speech synthesis , geometry , mathematics , speech technology , programming language
We propose a set of algorithms to efficiently make speech animation for 3D cartoon characters. Our prototype system is based on blendshapes, a linear interpolation technique, which is widely used in facial animation practice. In our system, a few base target shapes of the character, prerecorded voice, and its transcription are required as input. We describe a simple technique that amplifies the target shapes from few inputs using a generic database of viseme mouth shapes. We also introduce additional lip‐synch editing parameters that allow designers to quickly tune the lip movements. Based on these, we implement our prototype system as a Maya plug‐in. The demonstration movies created with this system illustrate well the practicality of our approach. Copyright © 2008 John Wiley & Sons, Ltd.