what does 'realistic' mean? 3d realisation
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TRANSCRIPT
June 2010
CityGRID 2009Intelligent 3D data management
Session 4: Visualisation of Place
What does ‘realistic’ mean?
The issues relating to defining the accuracy of 3D
digital representation of a place.
“Is a national 3D data set a solution looking for a
problem?” 26th May 2010 @ #ospe
John Carpenter, Head of Product Management
Ordnance Survey
Source: Flickr / Digitalpimp
Source: Flickr / I Like
Source: Flickr / Ed Yourdon
Source: Flickr / Wonderlane
Source: Met Geo Info / City of Linz
Source: PB / Eberhard
Source: Flickr / DavidChief
3D Good / 2D Bad?
• To improve decision making, and
• To save time and money in the decision making
process
– Information management
– Conservation
– Urban planning
– Public consultation
Information Management
Conservation
Urban Planning
Public Consultation
Public Consultation
Public Consultation
Public Consultation
Public Consultation
• Solid models:
Source: Met Geo Info / City of Zagreb
Source: Flickr / Laineys Repetoire
Position
Source: Flickr / Betenoir
Geometry
Source: Flickr / Salvadhor
Source: Flickr / Miss Tessmacher
Texture
Source: Met Geo Info / City of Glasgow
Source: C3 Technologies / City of Vas
Source: C3 Technologies / City of Vas
Source: Flickr / Olivander
• CityGML v.1.0 (August 2008)
• OGC Standard
• Developed & promoted by the 3DSIG
LoD 1LoD 2LoD 3
Level of Detail (LoD):
LOD: Scalable solutions
according need
Application:
Data Source:
Topographic
mapping
Aerial
photogrammetry or
airborne laser
scanning
LoD 1.5
Generalised Roof Model
LoD 1
Block Model
LoD 2
Roof Model
LoD 3
Detailed Roof Model
LoD 4
Interiors
Aerial
photogrammetry or
airborne laser
scanning
Detailed aerial
photogrammetry
Façade
photographs and
3D TLS of
complex buildings
Construction plans
or
surveying
Noise protection,
large area city
planning
Local area city
planning,
project
development
Project
development,
architectural
documentation,
cultural heritage.
Homeland security,
asset management
• CityGML v.1.0 (August 2008)
• OGC Standard
• Developed & promoted by the 3DSIG
• Globally adopted?
– IFC (BuildingSMART)
– Integration with BIM
Michael Schlosser
(Geospatial Technical Specialist Autodesk)
• “..3D GIS is about making it easier for the users
of the information and not the CAD and GIS
gurus.
• “..It’s about an easier way to analyze, visualize
and communicate information about our 3D
world.”
@rollohome