Example-based facial rigging

8 years 10 months ago
Example-based facial rigging
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.
Hao Li, Thibaut Weise, Mark Pauly
Added 31 Jan 2011
Updated 31 Jan 2011
Type Journal
Year 2010
Where TOG
Authors Hao Li, Thibaut Weise, Mark Pauly
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