Efficient Simulation of Secondary Motion in Rig-Space

Project Members

Fabian Hahn (Disney Research Zurich)
Bernhard Thomaszewski (Disney Research Zurich)
Stelian Coros (Disney Research Zurich)
Bob Sumner (Disney Research Zurich)
Markus Gross (Disney Research Zurich)


We present an efficient method for augmenting keyframed character animations with physically-simulated secondary motion. Our method achieves a performance improvement of one to two orders of magnitude over previous work without compromising on quality. This performance is based on a linearized formulation of rig-space dynamics that uses only rig parameters as degrees of freedom, a physics-based volumetric skinning method that allows our method to predict the motion of internal vertices solely from deformations of the surface, as well as a deferred Jacobian update scheme that drastically reduces the number of required rig evaluations. We demonstrate the performance of our method by comparing it to previous work and showcase its potential on a production-quality character rig.


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Efficient Simulation of Secondary Motion in Rig-Space
July 22, 2013
ACM SIGGRAPH / Eurographics Symposium on Computer Animation (SCA) 2013
Paper File [pdf, 2.86 MB]

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