3D National Map for Smart Nation - Geospatial World … · SLA - Mission & Roles Optimise Land...
Transcript of 3D National Map for Smart Nation - Geospatial World … · SLA - Mission & Roles Optimise Land...
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3D National Map for Smart Nation
Dr. Victor Khoo Singapore Land Authority
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Singapore Land Authority (SLA)
• SLA is a statutory board formed in Jun 2001
• Vision - Limited Land Unlimited Space
Land Office Singapore Land
Registry
Land Survey Department
Land Systems Support Unit
Singapore Land Authority
Revenue House
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SLA - Mission & Roles
Optimise Land Resource
ensure the best use of State land and
buildings
Administer Land Management System
provide an effective and reliable land
management system, including the issuance and guarantee of land titles and geo-spatial demarcation of land,
and
Manage Geospatial Information System
enable the full use of land information for
better land management and creation of new
business opportunities
Mission – To optimise land resources for the economic and social development of Singapore
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Limited Land Unlimited Space
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Creating Space Above and Below
Industry Space Above Roads
(Source: JTC)
Underground Science City Jurong Rock Caverns
Source: ST Singapore
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2D Maps Not Adequate
• Not able to fully represent the real world
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Smart Nation
• Singapore is building the World's first Smart Nation by harnessing technology and gathering insights from data to the fullest with the aim of – improving the lives of citizens, – creating more opportunities, and – building stronger communities.
Measurement + Prediction = Performance
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3D Map Data – Needs are Growing
Urban Heat Island Solar Potential Study
DTM for Flood Management
Telecommunication Coverage
Urban Air Flow Dynamic
3D Geological Map Underground Utilities
Underground Infrastructure
Development Planning
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Considerations for 3D Map Data
• What are the objectives and applications of the 3D datasets?
• Who are the users of the 3D datasets?
• Factors to consider – Accuracy / Precision
– Level of Detail / Scale
– Reliability /Currency
– Coverage / Completeness
– Data model / Format
– Appearance / Reality
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Space
Natural Asset
Linear Structure
Structure
Building
Facility / Built
Theatre / World
Sub-Systems System
Level
Site
Real Property Asset
Country
State / Province
County
Installation / Region
Node
Segment
Room
Space
System
Level
Sub-Systems
Room
Water / Sea
Land / Parcel
Underground
Air / Space
Geo
spat
ial I
nfo
rmat
ion
Overlay
Overlay
Bu
ildin
g in
form
atio
n Components
Components
City
Small Scale (low detail) Large Scale (high detail)
Source: NBIMS
3D Mapping
3D Cadastre
Building Information Model
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3D National Mapping Initiative
• SLA leads a WOG initiative to create and maintain an accurate national 3D map
• Develop once; use by many
– High resolution in order to meet the requirements of most agencies
– Open standard exchange format for interoperability and sharing in SG-SPACE
– Common authoritative 3D base map to support collaboration among agencies
– Workflow for continuous maintenance to ensure currency of data
Project Partners
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3D Mapping Project Scope
• Airborne Imagery and Laser Scanning
• Mobile Imagery and Laser Scanning
Capture 3D Data
• CityGML exchange format
• Terrain Models, 3D Buildings, 3D Roads (LOD0, LOD1, LOD2)
Create 3D Models
• CityGML Schema (OGC open standard)
• Relational Database
Establish Standards & Database
• Ground-based Laser Scanning/ Topographic Survey
• Satellite Imagery
• Building Information Model (BIM)
Update Changes
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Data Capturing using Rapid 3D Mapping Technology
Airborne Laser Scanning & Imaging Mobile Laser Scanning & Imaging
Phase 1 – FY13 to FY15 Phase 2 – FY14 to FY16
FY13 FY14 FY15 FY16
Phase 1
Phase 2
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3D Map - Data and Products
3D Data
3D Products
Airborne Laser Scanning Data
360 Camera Imagery
Mobile Laser Scanning
Data
3D Road Models
Airborne Vertical / Oblique Images
Digital Terrain Model &
Digital Surface Model
3D Building Models
Photo Map
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Airborne Data Capturing Platform
• Two (2) twin engine aircrafts will be mobilised
• One sensor on each aircraft
• 40 days of data capturing
Cessna Titan (C404) VH-LAD
Reims F406 VH-EYQ
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Optech Pegasus ALTM
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Airborne Laser Scanning (Point Clouds Data)
Altitude of 3600ft
Minimum 5 points/sq m
Vertical accuracy +/- 15cm
Laser Scanning Data – Point Cloud
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Digital Surface Model (DSM) / Digital Terrain Model (DTM)
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Leica RCD 30 Oblique Camera
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Vertical and Oblique Images
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Photo Map from Airborne Images
Photo Map (Orthophoto)
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Building Modelling using Imagery
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©SLA 2016
3D Building Modelling
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Mobile Mapping System
24
360 Spherical Camera -Ladybug 5
GNSS Receiver
Mobile Laser Scanner – Riegl VMX-450
DMI – Distance Measuring Instrument
IMU – Inertial Measurement Unit (inside)
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MMS Data Capturing
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Mobile Laser Scanning Point Cloud
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MMS 360 Images and Point Cloud
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3D Modelling – Transportation and Street Furniture
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3D Modelling and Data Management
• CityGML represents
– 3D geometry, 3D topology, semantics, and appearance
– in 5 discrete scales (Levels of Detail, LoD)
• Oracle Spatial Database
LoD0
Terrain Model
LoD1
Block models with
no roof structures
LoD2
Explicit roof
structures
LoD3
Detailed
architectural
models
LoD4
Interior
modelled
Source: Thomas Kolbe
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CityGML - Level of Detail (LoD)
30
(Source: TUDelft)
LOD 0 – only FootPrint and/or RoofEdge
LOD 1 – Block model w/o roof structures
LOD 2 – Differentiated roof structures, building installations
LOD 3 – Detailed architecture model
LOD 4 – LOD 3 + model of the interior space
(Source: OGC)
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Airborne Images to create 3D Building (LOD1, LOD2)
3D Geometry + Topology + Semantics + Appearance
roof surface
ground surface ground surface
wall surface
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Working with Partners
Terrain model for flood management Building height information for flight safety
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Slope Map and Aspect Map
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Owner: John Location: 30 Black Pepper Prawn Street Lease expiry: 31 Dec 2099 …..
Owner: Alan Location: 78 Good Food Avenue Lease expiry: 1 Jan 2199 …..
Owner: Steven Location: 62 Chilli Crab Road #15-01 Lease expiry: 15 June 2050 3D view: …..
3D Convergence - Ubiquitous Cadastre
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3D Cadastre – Building Subdivision
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Laser Scanning Data – Tree Mapping
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Tree Database Point ID X
coordinate Y
coordinate Height (m)
24356 13245.23 61524.98 2.34
71626 13255.27 13245.23 3.15
17263 13575.23 56475.45 1.25
17625 13245.23 13235.27 1.36
74635 13246.23 12875.98 1.35
74653 13655.23 87653.96 1.98
…….. …….. ……… ……..
Identify location and
estimate number of
trees on State Land
Estimate number of trees
to support MSO’s effort in
Centralisation of Public
Greenery Maintenance
Provide high resolution
3D tree information to
support carbon
accounting
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Urban Heat Island Effect Assessment
• How will the development of a new town affect the wind flow and comfort (thermal) in adjacent towns? Wind corridors; good ventilation; parks, open spaces and greenery?
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Urban Planning
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Presenter:
Inter-visibility / Lines of Sight
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Solar Potential Study
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Development of Driverless Vehicle (DV)
• Produce 3D laser scanning data for the DV testing
• Collaborate with research institutes to understand the requirement of 3D map to support DV
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Spin-off
• 3D indoor mapping to support Location Based Services (LBS)
• Underground mapping in 3D
• Augmented Reality and Virtual Reality
• Research – Future city / smart city
– Clean energy
– Transport and mobility
– Simulation
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©SLA 2015