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		   B O S T O N   U N I V E R S I T Y
                                       
		      Computer Science Department
                                       
			  C O L L O Q U I U M
                                       
     Editing and Retargetting Animated Motion with Spacetime Constraints

			       Michael Gleicher
		      Autodesk Vision Technology Center


		       Wednesday, April 15th
                                       
			        11:00pm 
		       (Coffee served at 10:45pm)

                                       
			 Seminar Room / MCS 135
                                       

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Most motion for computer animation is single purpose: it applies to a
particular character performing a particular action. In this talk, I will
present methods for adapting motions to apply in new situations. The approach
views the task of finding an adapted motion as a constrained optimization
problem: compute the motion that best preserves the desirable properties of
the original, subject to meeting the demands of the new situation. This
Spacetime Constraints approach considers the entire motion simultaneously,
solving a single numerical problem for each motion. By careful choice in how
we pose the problem, by judicious use of simplifications and approximations,
and by careful implementation, the approach can be made practical. I will show
how the approach can be used to provide direct-manipulation editing of
animated motion and to retarget motions to new characters.

Host: Wayne Snyder (snyder@cs.bu.edu)

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