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A 3D Digital Cadastre for New Zealand by 2021:leveraging the current system and modern technology
Anselm Haanen and Trent Gulliver
Land Information New Zealand
A Vision for a Fully DigitalCadastral Survey System
Presented at th
e FIG Congress 2018,
May 6-11, 2018 in
Ista
nbul, Turkey
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Overview
A Vision for a Fully DigitalCadastral Survey System
Replacing plan images with data
and its integration into a
complete digital cadastral survey network
1. Digital cadastral survey process
2. Benefits of Digitalisation
3. Visualising 2D and 3D surveys
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The Cadastral Survey System in New Zealand
New Zealand
Population: 4.5 million
Land area: 268,000 km²Distance from Istanbul: 17,159 km
− Surveys undertaken entirely by private
licensed cadastral surveyors (currently 686)
− Monument based legal cadastre
− Connected to geodetic control system
− Surveyors submit survey datasets / plans
to LINZ
− Cadastral survey data managed in
Landonline in 2D
− 2.5M primary parcels
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Current Digitisation of the Survey Process
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Problem #1
Data Duplicated on Plans:
• Benefits driven by representation of survey in
data format
• Plan production adds time and costs
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Problem #2
3D Surveys only lodged as plans
• Plans difficult to interpret
• Requires manual validation
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Opportunities
Complete digitisation of the cadastral survey data and process
Benefits:
✓ Capture
✓ Validation
✓ Integration
✓ Re-use
v
u
w
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Visualising a Dataset without a Plan
Bridging the Visualisation Gap
• On-the-fly display
• Survey / GIS software
• Automated rendering of the data as a plan
• PDF reader software
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Powerful PDFs
Bridging the Visualisation Gap
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A 3D Digital Cadastre for New Zealand by 2021:leveraging the current system and modern technology
Anselm Haanen and Trent Gulliver
Land Information New Zealand
A Vision for a Fully DigitalCadastral Survey System