Efficient Generation of Motion Transitions Using Spacetime Constraints
Charles Rose, Brian Guenter, Bobby Bodenheimer, and Michael Cohen
Siggraph 1996
Abstract
This paper describes the application of spacetime constraints to creating
ating transitions between segments of human body motion. The motion
transition generation uses a combination of spacetime constraints
and inverse kinematic constraints to generate seamless and dynamically
plausible transitions between motion segments. We use a fast recursive
dynamics formulation which makes it possible to use spacetime
constraints on systems with many degrees of freedom, such as human
figures. The system uses an interpreter of a motion expression
language to allow the user to manipulate motion data, break it into
pieces, and reassemble it into new, more complex, motions. We have
successfully used the system to create basis motions, cyclic data,
and seamless motion transitions on a human body model with 44 degrees
of freedom.
Accompanying video (DivX, 66MB, a transfer from videotape).
Bobby Bodenheimer 
Last modified: Thu Oct 28 10:18:28 1999