a collaborative environment for urban landscape simulation

A Collaborative Environment for Urban Landscape Simulation

Pedro Brandão Silva pedro.brandao.silva@fe.up.pt

António Coelho acoelho@fe.up.pt Rosaldo J. F. Rossetti rossetti@fe.up.pt

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Presentation Outline

• Motivation

• Problem

• Objectives

• Related Work

• Simulation Platform

• Results

• Conclusion & Future Work

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Motivation

Popularity of existing urban environments in virtual reality simulations

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Motivation

Real-time modeling virtual urban environments as an end in itself

Architecture & Urban Planning

Police, Firefighting, Health

Resident Opinion

As a means to obtain virtual urban models for

Advertising

Virtual Tourism

Training

Education & Research

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Problem

Individual and manual Complicated, time-consuming and expensive

High detailed models Require great bandwidth and high hardware specs

Produced data has limited usability Only geometry, no semantics

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Problem

Semi-automatic methods

Integrates real world data sources

Most don’t have enough detail…

Could benefit from empirical contributions…

Procedural Modeling

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Problem

How to employ procedural modeling techniques, integrating real world data sources and user contributions, for the generation

of virtual urban environments for landscape simulation?

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Objectives

Features

Allows users to visualize, navigate and interact with large areas of urban terrain

Use real world data and randomness as starting point

Procedural modeling to generate a tridimensional city model in real-time

Allow collaboration between users for GIS data refinement

Main Goal:

Create a collaborative solution for virtual urban environment recreation for landscape

simulation

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Related Work Procedural Modeling

Terrains:

Roads:

[Planetside11]

[Olsen05]

[Gain09]

[Parish01]

[Bruneton08]

[Chen08]

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Related Work Procedural Modeling

[Wonka03]

[Muller06]

[Coelho07]

[Silva10]

Buildings:

[Lipp08]

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Related Work Collaborative solutions

[Linden11]

[Google11a]

[Open11]

[Google11b]

Simulation Platform Architecture

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Simulation Platform Procedural Modeling Process

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Simulation Platform Progressive Area Loading

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Simulation Platform Collaborative Modification

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Simulation Platform Implementation

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Client:

Server:

Results City Overview

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Results Object Edition

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Results Collaborative Edition

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Conclusion

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Collaborative solution simulation was completed

Includes procedural modeling features

Is based on real-world data

Supports collaborative work

Can manage multiple users

Allows parameter editing

Future Work

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Improve modeling complexity

Optimize performance

More collaboration features and facilities

Further parameterization

Perform user stress tests

Improve general architecture

Thank you!

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