BIRS Workshop Lecture Videos

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BIRS Workshop Lecture Videos

Numerical Analysis in Visual Computing: not too little, not too much Ascher, Uri


Visual computing is a wide area that includes computer graphics and image processing, where the 'eye-norm' rules. I will briefly discuss two case studies involving numerical methods and analysis applied to this area. The first involves motion simulation and calibration of soft objects such as cloth, plants and skin. The governing elastodynamics PDE system, discretized in space already at the variational level using FEM,leads to a large, expensive to assemble, dynamical system in time, where the damped motion may mask highly oscillatory stiffness. Geometric integration ideas are making their way into visual computing research these days in search for more quantitative computations. The other case study involves some image processing problems where theremis a premium for local approaches that do not necessarily use underlying PDEs. Here the trend is in the other direction. I will demonstrate and discuss.

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