Physical Touchup of Human Motion
Many popular motion editing methods do not take physical
principles into account potentially producing implausible
motions. This paper introduces an efficient method for
touching up edited motions to improve physical plausibility.
We start by estimating a mass distribution consistent
with reference motions known to be physically correct. The
edited motion is then divided into ground and flight stages
and adjusted to enforce appropriate physical laws for, respectively,
zero moment point (ZMP) constraints and correct
ballistic trajectory. Unlike previous methods, we do not
solve a nonlinear optimization to calculate the adjustment.
Instead, closed-form methods are used to construct a hierarchical
displacement map which sequentially refines userspecified
degrees of freedom at different scales. This is combined
with standard methods for kinematic constraint enforcement,
yielding an efficient and scalable editing method
that allows users to model real human behaviors. The potential
of our approach is demonstrated in a number of examples.
Images and movies
BibTex references
@InProceedings{SKG03, author = "Shin, Hyun Joon and Kovar, Lucas and Gleicher, Michael", title = "Physical Touchup of Human Motion", booktitle = "Proceedings of Pacific Graphics", month = "oct", year = "2003", url = "http://graphics.cs.wisc.edu/Papers/2003/SKG03" }