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Paul Reitsma Visiting Researcher Graphics Lab Computer Science Department School of Computer Science Carnegie Mellon University Pittsburgh, PA 15213, USA
Phone: (412) 708-8362
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My research focuses on ways to measure how well these two
criteria have been fulfilled, with an eye towards using that information
to create better animation systems; once we understand the tradeoffs,
we can intelligently exploit them. Ultimately, one goal is to
understand the factors involved in motion generation so well
that we can automate most of it away, creating a system simple enough
to allow a child to author animated stories, but powerful enough to drive
the animated characters in high-end games and movies.
My projects in this area have also led to work in related areas, such as
perceptual psychology and graph algorithms. The latter, in particular,
has occupied significant amounts of my time of late, and has led to some
interesting discussions with colleagues.
Research
An automated animation-generation system such as a motion graph has to
fulfill two simple requirements: it needs to be able to create
all the animations we want, and everything it creates must be up
to our standards of quality. In practice, these requirements are
not so simple; in fact, they are often conflicting;
the canonical example is motion editing, where allowing greater changes
to a motion allows greater flexibility in which animations can be
created, but typically risks inflicting correspondingly greater errors
and visual artifacts on the results.
Publications and Projects
Effect of Scenario on Perceptual Sensitivity to
Errors in Animation
Paul Reitsma, Carol
O'Sullivan.
Accepted for publication in ACM Transactions on Applied
Perception.
Effect of Scenario on Perceptual Sensitivity to
Errors in Animation
Paul Reitsma, Carol
O'Sullivan.
In Proceedings of Applied Perception in Graphics and
Visualization 2008, August 2008.
Effect of Character Animacy and Preparatory Motion on Perceptual
Magnitude of Errors in Ballistic Motion
Paul Reitsma, James Andrews,
Nancy Pollard.
In Proceedings of Eurographics 2008, April 2008.
Evaluating Motion Graphs for Character Animation
Paul Reitsma, Nancy Pollard.
In ACM Transactions on Graphics, October 2007, presented at SIGGRAPH
2008.
Evaluating Motion Graphs for Character Navigation
Paul Reitsma, Nancy Pollard.
In SCA 2004.
Perceptual Metrics for Character Animation
Paul Reitsma, Nancy Pollard.
In SIGGRAPH 2003.
Self-Enforcing Strategic Demand Reduction
Paul Reitsma, Peter Stone, Janos Csirik, and Michael Littman,
Agent Mediated Electronic Commerce 2002.