Animating Articulated Characters using Wiggly Splines
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Date
2015
Journal Title
Journal ISSN
Volume Title
Publisher
ACM Siggraph
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.
Description
@inproceedings{10.1145:2786784.2786799,
booktitle = {ACM/ Eurographics Symposium on Computer Animation},
editor = {Florence Bertails-Descoubes and Stelian Coros and Shinjiro Sueda},
title = {{Animating Articulated Characters using Wiggly Splines}},
author = {Schulz, Christian and Tycowicz, Christoph von and Seidel, Hans-Peter and Hildebrandt, Klaus},
year = {2015},
publisher = {ACM Siggraph},
ISBN = {978-1-4503-3496-9},
DOI = {10.1145/2786784.2786799}
}