ICES Seminar-Computational Visualization Series - Tomoyuki Nishita/The University of Tokyo, "Particle-based Simulation for Computer Graphics," ACES 4.304

Contact Name: 
Leah Adrian
ACES 4.304
Oct 10, 2012 1:15pm - 3:00pm

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Type of Talk: ICES Seminar-Computational Visualization Series

Speaker/Affiliation: Tomoyuki Nishita/Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo

Date/Time: October 10, 2012, 1:15 pm

Host: Chandrajit Bajaj

Talk Title: Particle-based Simulation for Computer Graphics

Talk Abstract: In recent years, point primitives have received growing attention in computer graphics. As point primitives, particles and metaballs are often used. The particle system refers to a computer graphics technique to simulate certain fuzzy phenomena. Point-based modeling/rendering has its roots in particle systems. Metaball technique is used for definition of implicit surfaces or density distribution. The SPH (Smoothed-particle hydrodynamics) method is also used for simulating fluid flows. They can add realism to a scene. These techniques are useful for representation of object geometry, and simulation/rendering of dynamics and optical effects of natural phenomena.

My talk includes the following topics: 1) Geometric modeling represented by metaballs or points such as point-sampled surfaces. 2) Efficient rendering of metaballs using Bezier clipping method and GPU. 3) Realistic rendering of natural scenes consisting small particles such as clouds, water, smoke, atmospheric scattering, snow (avalanche), solar prominence, ice melting, and fire. And Realistic shading due to radiosity for point-sampled geometry.4) Dynamic simulation of fluids and material such as water flow(or water droplets on windshield),sands (or dune), dust, hair, strings, cloths, object destruction, Magnetorheological fluid, and oil painting.

Speaker Bio: Tomoyuki Nishita is a professor in the Department of Complexity Science and Engineering (also in the Department of Information Science) at the University of Tokyo, Japan since 1998. He received his BE, ME and Ph.D in Engineering in 1971, 1973, and 1985,respectively, from Hiroshima University. He taught at Fukuyama University from 1979 to 1998 He was an associate researcher in the Engineering Computer Graphics Laboratory at Brigham Young University from 1988 to 1989. His research interests center in CG including lighting/shading models (radiosity), natural phenomena, real-time rendering,geometric modeling, and non-photorealistic rendering. He is one of the pioneers of radiosity method. He has written 17 SIGGRAPH papers and 18 EUROGRAPHICS papers.

Dr. Nishita received Research Award on Computer Graphics from Information Processing Society of Japan in 1987, and also received Steaven A. Coons award from ACM SIGGRAPH in 2005. He was a president of The Institute of Image Electronics Engineers of Japan in 2009-2010.