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Techniques for social beaviour simulation in virtual cities
1. Techniques for social behavior
simulation in virtual cities
M.POLCEANU
D.M.POPOVICI
OVIDIUS University of Constanta
Digital Cities
09.23.2011
2. Index
Context of work
Motivation
Techniques
Conclusions
http://tomis.cerva.ro
3. 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)
http://tomis.cerva.ro
4. Motivation
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
http://tomis.cerva.ro
5. Techniques
Problem
Navigation through the city. Obstacle avoidance for large
numbers of virtual people.
Solution
Road-network as a graph.
http://tomis.cerva.ro
6. Techniques
Problem
Diversity in body animation. Avoiding crowds with synchronized
movements, while keeping resource consumption low.
Solution
Keep minimal diversity with keyframe/timestep randomization.
http://tomis.cerva.ro
7. 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)
http://tomis.cerva.ro
8. 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.
http://tomis.cerva.ro
9. Techniques
Problem
Simulating overall community behavior that looks natural.
Solution
High-level commands that make use of inferior layers of the
implemenation.
http://tomis.cerva.ro
10. 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.
http://tomis.cerva.ro
