September 2008

Recent Work in Computer Graphics

• Crowd simulation and rendering• Animatable facial models for crowds• Tangible interfaces and applications

C r o w d S i m u l a t i o n

State of the art in realtime large crowd simulation:

• [Reynolds 2006]:10K characters with Playstation3.

• [Rudomin et al. 2006]: 100K to 1M simple characters simulated and rendered in GPU.

• [DeSouza et al. 2007]: megascale agent based simulation for biology simulations.

• [Shopf et al. 2008]: 60K detailed characters simulated in newest ATI GPU using hardware tesselation.

• Agent based crowd simulation has applications in architecture and urbanism, natural disaster mitigation, film and videogames, biological simulation

• We were the first to specify, simulate and render in real time 100K or more characters using:● Finite state automata

running in the GPU ● Agent influence auxiliary

images● Level of detail and

instancing● XML scripts automagically

converted to GLSL shaders and auxiliary images

C r o w d S i m u l a t i o n

C r o w d S i m u l a t i o n

Animatable facial models for crowds

• We use a small group (5 to 7) of representative geometry images, three auxiliary images, as well as individualized parameters for modeling and animating each face in a crowd.

Modelos faciales animables para multitudesAnimatable facial models for crowds

Modelos faciales animables para multitudesAnimatable facial models for crowds

Tangible interfaces and applicationsSeveral interfaces and their effects on user perception and interaction were studied and presented in art venues.

●Plant Chat, Galería Myto, México DF, 2004 ●Fluids, “Datspace”, Madrid 2005●Crowds: “Technarte”, Bilbao 2007

Aplicaciones de interfaces tangiblesTangible interfaces and applications

References

• Reynolds et al 2006: Big Fast Crowds on PS3 http://portal.acm.org/citation.cfm?id=1183333

• Rudomin et al 2006: Large Crowds in the GPU: http://rudomin.cem.itesm.mx/~rudomin/shader-agents.htm

• De Souza et al 2007: Mega-Scale Interactive Agent-Based Model Simulations on the GPU: http://www.me.mtu.edu/~rmdsouza/ABM_GPU.html

• Shopf et al 2008: March of the Froblins http://ati.amd.com/developer/SIGGRAPH08\Chapter03-SBOT-March_of_The_Froblins.pdf