integrating virtual environment and gis for 3d virtual city development and urban planning bin chen,...
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Integrating Virtual Environment aIntegrating Virtual Environment and GIS for 3D Virtual Citynd GIS for 3D Virtual City
Development and Urban PlanninDevelopment and Urban Planningg
Bin Chen, Fengru Huang, Yu FangPeking University
Content
• Introduction• Virtual World Technology• Integrate VW with GIS• A Practice of VW Based Virtual City• Conclusions and Future Work
Introduction
• Recently innovative technologies offer different ways of modelling and representing urban information with real-time interaction over the Internet.
• 3 generations of virtual city technology– Web listing by text, image and video– "Flat" cities by 2D map– 3D visualization virtual city
Virtual World Technology• Virtual World is a mult
i-user 3D creative platform based on virtual environment– Users immersed into virt
ual environment by avatars
– Online collaborative authoring and application development
– Different from traditional virtual reality
Features of Virtual World• Virtual reality environme
nt– Virtual terrain and virtual
atmosphere– Dynamics simulation
• 3D authoring platform– Network oriented 3D mode
lling– Script language
• interact among virtual environment, avatars and 3D models
• communicate with outer process
• Avatar system• Instant messaging
Virtual World Technology• As a general purpose development platf
orm, VW can be used to support applications from a wide range of fields– Online entertainment, virtual communities– Virtual education and trainning– Scientific visulization– Virtual tour, urban planning– Emergency response and drill– Facility Management
Virtual World Technology• VWs are becoming t
he new generation of mainstream Internet contents followed after text, image, audio and video
Integrate VW with GIS• Extending geodata model by virtual reality
– Integrate geodata with 3D models– Support realtime update and modification of virt
ual scenes• Online multi-user collaborative workflow
– Emphasize collaborative interaction of multi-user
– Increase performance of user-avatar interaction with virtual environment
– New method of mapping between 2D geodata and 3D models
Integrate VW with GIS
• Develop human-scale GIS application– Considering features of small scale space
• Enrich general purpose development platform of VW– Combined with geoprocess model library– Communicate with outer geodatabase and
workflow
VW Based Virtual City
• Advantages includes– Network oriented– Fast and low-cost 3D mo
deling– Multiple plans show– Multi-user collaborative
evaluation– Realtime plan modificati
on
A Practice of VW Based Virtual City• The project integrate th
e real Shunde Industrial Design City, which hosted in Guangdong of South China, with a virtual environment by geographic mapping and 3D virtual modeling.
• Based on VW server of Opensimulator
• About 4 square kilos
A Practice of VW Based Virtual City
• A joystick allows the user avatar to fly-through the 3D model in realtime
• have a look from different perspectives at complex topographic structures as well as the smallest architectural details.
A Practice of VW Based Virtual City
• Based on the 3D visualization of the real architecture and landscape of Shunde Industrial City, users of different levels and objectives can have varies activities and experiences in virtual environment– including interactive mapping and collaborative mode
lling, solid, geometric modelling photospatial panoramic views, and multi-user virtual worlds.
• For urban planning, the planners can construct or move landscape elements– such as roads, buildings, plants, sculptures, bridges,
water, etc– based on their observation and consideration in the vi
rtual city collaboratively.
Conclusions and Future Work• Applications based on virtual world ar
e becoming popular, virtual city and urban planning is a typical case
• Extending VW with GIS will make virtual city more powerful by many aspects including immersive virtual environment and collaborative interaction
• Further work will focus on the complete design and development of virtual applications of urban planning
End
• Thanks for your attention!
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