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Plausible motion: conclusion. Ronen Barzel John Hughes. What you’ve heard today. Freedom in models Allows you to achieve various goals: measuring plausibility constructing desired motion efficient simulation …all physically “correct”. Choice of model… …is just a choice.
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Plausible motion: conclusion Ronen BarzelJohn Hughes
What you’ve heard today • Freedom in models • Allows you to achieve various goals: • measuring plausibility • constructing desired motion • efficient simulation …all physically “correct”
Choice of model… …is just a choice • CG has adopted models from engineering disciplines • But properties of interest to engineering are different from those of interest to animation. • We can choose models that meet our needs: visually observable plausibility, ease of control, efficiency of computation
If observable phenomena are important… • Can use phenomenological models rather than physical: • Faking Dynamics (Slinky dog), CG&A 1996 • Structural Modeling of Flames, Siggraph 2002 • Continuum between: Physical model that captures features of interest Phenomenological model of features of interest
Not just animation… • Same principles can apply to rendering: • engineering problem of light transport, vs. • creating a plausible image
Open Questions • Making user interfaces for plausible-motion specification and exploration • Find the right spectrum of models and search algorithms for wide classes of problems
Other things to see Today 10:15 • Efficient Synthesis of Physically Valid Human Motion, Fang, Pollard. Today 5:45pm • “Evaluating the Visual Fidelity of Physically Based Animations”O’Sullivan, Dingliana, Giang • “Perceptual Metrics for Character Animation” Reitsma and Pollard Thursday, 8:00am • “Keyframe Control of Smoke Simulations”Treuille, McNamara, Popović
We hope we’ve… • Conveyed a new world view about simulation • Inspired future research and development • Made you think
Thanks to our speakers: Stephen Chenney, University of Wisconsin Jovan Popović, MIT Ronald Fedkiw, Stanford University