Animating Reactive Motion Using Momentum-based Inverse Kinematics

Repeatedly apply external perturbations to the body

Team Members

Introduction

In this paper, we propose a new method to generate reactive motions for arbitrary external perturbations such as pushing, pulling, or hitting. The method can be applied to motions with arbitrary contact states such as standing, walking or running, and works as follows. First a number of reactive motions of humans are captured by pushing and pulling a person to various directions. These motions are kept in the motion database. The user will then import some captured motion data to be used as a primary motion. At an arbitrarymoment, when an external perturbation is applied to the body it is transformed and modeled as an effective increase in the linear momentum and angular momentum around the center of mass (COM). At the same time, a counteracting motion will be searched in the database to be blended into the primary motion.

Publication

Taku Komura, Edmond S. L. Ho, Rynson W. H. Lau, "Animating Reactive Motion Using Momentum-based Inverse Kinematics and Captured Motion", Computer Animation and Virtual Worlds Journal (Intl. Conf. on Computer Animation and Social Agents, CASA 2005), October 2005.

Contact

Any suggestions or comments are welcome. Please send them to Dr. Taku Komura.