Title
Animating articulated characters using wiggly splines
Abstract
We propose a new framework for spacetime optimization that can generate artistic motion with a long planning horizon for complex virtual characters. The scheme can be used for generating general types of motion and neither requires motion capture data nor an initial motion that satisfies the constraints. Our modeling of the spacetime optimization combines linearized dynamics and a novel warping scheme for articulated characters. We show that the optimal motions can be described using a combination of vibration modes, wiggly splines, and our warping scheme. This enables us to restrict the optimization to low-dimensional spaces of explicitly parametrized motions. Thereby the computation of an optimal motion is reduced to a low-dimensional non-linear least squares problem, which can be solved with standard solvers. We show examples of motions created by specifying only a few constraints for positions and velocities.
Year
DOI
Venue
2015
10.1145/2786784.2786799
Symposium on Computer Animation
Field
DocType
Citations 
Spline (mathematics),Least squares,Motion capture,Mathematical optimization,Image warping,Optimal control,Spacetime,Algorithm,Physically based animation,Mathematics,Computation
Conference
2
PageRank 
References 
Authors
0.37
30
4
Name
Order
Citations
PageRank
Christian Schulz121310.71
Christoph von Tycowicz218310.31
Hans-Peter Seidel312532801.49
Klaus Hildebrandt446624.77