期刊
ACM TRANSACTIONS ON GRAPHICS
卷 29, 期 4, 页码 -出版社
ASSOC COMPUTING MACHINERY
DOI: 10.1145/1778765.1778769
关键词
facial animation; rigging; blendshape animation
资金
- Swiss National Science Foundation [20001-112122]
We introduce a method for generating facial blendshape rigs from a set of example poses of a CG character. Our system transfers controller semantics and expression dynamics from a generic template to the target blendshape model, while solving for an optimal reproduction of the training poses. This enables a scalable design process, where the user can iteratively add more training poses to refine the blendshape expression space. However, plausible animations can be obtained even with a single training pose. We show how formulating the optimization in gradient space yields superior results as compared to a direct optimization on blendshape vertices. We provide examples for both hand-crafted characters and 3D scans of a real actor and demonstrate the performance of our system in the context of markerless art-directable facial tracking.
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