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A Virtual Reality Bushfire Mitigation Tool for Community Consultation

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A Virtual Reality Bushfire Mitigation Tool for Community Consultation A.R Walker, S. Gard, B.J. Williamson, J.M. Bell Queensland University of Technology – PowerPoint PPT presentation

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Title: A Virtual Reality Bushfire Mitigation Tool for Community Consultation


1
A Virtual Reality Bushfire Mitigation Tool for
Community Consultation
  • A.R Walker, S. Gard,
  • B.J. Williamson, J.M. Bell
  • Queensland University of Technology

2
Introduction
  • Fire prevention and mitigation
  • Save lives
  • Save properties
  • Education key factor
  • Residents who recognised the hazard of living in
    a fire prone area were more likely to have taken
    safety precautions against such a risk
  • Effective community education tool are essential
    components in the fight against fire at the
    urban/rural interface
  • Virtual Reality Bushfire Mitigation Tool for
    Community Consultation

3
Building Standards in Bushfire Prone Areas
  • AS3959-1999
  • Building Standard AS3959-1999 Construction of
    buildings in bushfire-prone areas
  • Determines the bushfire-prone areas
  • DR05060
  • Draft standard DR05060 Construction of buildings
    in bushfire-prone areas
  • Revision of AS3959-1999
  • More comprehensive standard
  • Slope, vegetation type, construction material

4
Benefits of using Virtual Reality as a
Consultation Tool
  • Traditional web sites
  • Bushfireinfo.com
  • Lack any interactive participation on the users
    part
  • Information presented as mainly text
  • Virtual Reality
  • Multi-sensory highly interactive computer-based
    environment
  • 3D visualisation in real-time
  • Active participant in a virtual world
  • Can recreate unsafe environments (fire model)

5
VR and consultation
  • Study of 26 examples of the use of VR for public
    consultation in the UK (Heame and Webster 2003).
  • This study concluded the following advantages of
    VR as a consultation tool
  • VR is far more interactive and residents have
    become much more engaged in the consultation
    process
  • Users of VR could see what they were going to
    live in and interact with it, they did not have
    to build up a representation in their own minds
    from relatively abstract/codified documents
  • VR draws in those who wouldnt normally get
    involved in community engagement
  • This makes VR the prime choice for developing a
    bushfire mitigation tool for community
    consultation

6
Prototype VR bushfire mitigation tool
  • DR05060 standard
  • c .NET
  • TV3D 6.2 visualisation engine

7
3D Modelling
  • Fictitious terrain and property parcel were
    modelled using standard CAD software
  • Various vegetation types, as defined in the
    DR05060 were modelled
  • Two buildings types modelled
  • Timber and brick construction types

8
Classification of Vegetation and Slopes
  • Classify the vegetation and slope of the terrain
  • Done manually
  • Could use GIS data

9
Implementation of DR05060 Standard
  • DR05060 database lookup table
  • Easily adjusted
  • Scalable

10
Bushfire Propagation Model
  • Cellular automata (CA) fire propagation model
  • Terrain split into 1m x 1m cells
  • Fuel value and wind direction used in CA rules
  • Very simple naïve model
  • Proof of concept only
  • No effect of convection and wind interaction
  • No spotting ahead of the fire front
  • Very limited fire model

11
Results and Discussion
  • Prototype VR bushfire mitigation tool
  • VR functions
  • 1st person shooter interface
  • Common game controls used
  • Fly, walk, gravity, collision detection,
    animations, viewpoints, avatar

12
Results and Discussion
  • DR05060 functions
  • Add building to property parcel
  • Move location on parcel
  • Risk for each side of building
  • Construction material type displayed
  • Fire danger index (FDI)

13
Results and Discussion
  • Simulation of bushfire
  • Particle emitter to achieve the visual simulation
  • If CA cell burning
  • generate fire and smoke
  • Cells fuel depleted
  • No fire or smoke is emitted
  • Cell changed to a charcoal colour to simulate
    charred landscape

14
Conclusions
  • Virtual reality bushfire mitigation tool built
  • Will facilitate community consultation
  • Will stimulate behavioural change with regard to
    fire mitigation
  • First-person shooter style is well known to
    computer gamers
  • Rapid uptake of the VR interface
  • Fire simulation
  • Shows the advantages of alternate mitigation
    measures
  • Run fire simulations different property
    configurations
  • Visualisation of the fire models footprint
  • charcoal scar on the landscape
  • useful in evaluating alternate fire models
  • comparing them against the existing damage done
    to actual terrain

15
Novelty and Significance
  • The novelty of this research is the integration
    of bushfire modelling and DR05060 standard with a
    VR interface that will allow users to assess
    alternate bushfire mitigation scenarios
  • The significance of this work is its ability to
    improve community bushfire awareness and
    stimulate behavioural change which will directly
    reduce property damage and potentially save lives
    within the rural/urban interface

16
Future Work
  • Two separate VR bushfire mitigation applications
    planned
  • Non-expert
  • Web-based VR
  • Generic property and terrain
  • Editable parameters such as building material,
    vegetation and terrain.
  • Expert
  • PC-based VR
  • Real GIS data for terrain and vegetation
    information
  • Alternate bushfire scenarios/models

17
Demonstration
  • Demonstration.avi
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