techniques for social beaviour simulation in virtual cities

Techniques for social behavior simulation in virtual cities

M.POLCEANUD.M.POPOVICI

OVIDIUS University of Constanta

Digital Cities

09.23.2011

http://tomis.cerva.ro

Context of work

Motivation

Techniques

Conclusions

Index

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The context

TOMIS project

Reconstruction of the Roman Edifice with Mosaic, Constanta, Romania

Multimodal interactive framework

User experience

Cultural heritage (Edutainment)

Stereoscopic 3D

Interaction devices (Joystick, Wii)

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Main objective

Implementing a VR-based multi-sensorial interactive system that supports the reconstruction of ancient cities.

Intermediary objective

Populating the virtual environment with a community to simulate the activities in the daily city life.

Issues

Active user interaction (changing the VE’s behavior in realtime)

Simulating the society

Creating complex activities done by virtual humans

Tradeoffs between credibility and accuracy

Motivation

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Techniques

Problem

Navigation through the city. Obstacle avoidance for large numbers of virtual people.

Solution

Road-network as a graph.

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Techniques

Problem

Diversity in body animation. Avoiding crowds with synchronized movements, while keeping resource consumption low.

Solution

Keep minimal diversity with keyframe/timestep randomization.

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Techniques

Problem

Complex animations (reach for object, pick it, carry it and then drop it). Trigger events in certain moments of the animation.

Solution

Compound animations (several anims combined into one)

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Techniques

Problem

Having different people do different things, depending on their social class. (according to historic data)

Solution

Task-system based on capabilities and roles in the society.

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Techniques

Problem

Simulating overall community behavior that looks natural.

Solution

High-level commands that make use of inferior layers of the implemenation.

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Conclusions

Dissemination of cultural heritage through virtual reconstruction,

The quality of user experience improves with the ability to interact and change the VE’s evolution,

Framework for future reconstructions of inaccessible environments.

Thank you!

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