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Singapore Smart Nation - Measuring from the ground up

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A presentation showcasing the geospatial technologies that have been used in building a national 3D map to empower Singapore's Smart Nation initiatives

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Singapore Smart Nation - Measuring from the ground up

  1. 1. CS01.4 SMART CITIES Daniel Kruimel Singapore Smart Nation: Measuring from the ground up
  2. 2. A Vision for Singapore • A smart city will allow Singapore to develop solutions to tackle urban problems more effectively and efficiently. • Smart Cities of the future will require a robust 3D land information system, to organise the increasing amount and richness of geospatial information
  3. 3. A Vision for Singapore • “…geospatial data are the building blocks of a Smart City” – Vincent Hoong, CEO of Singapore Land Authority, 2009 - 2015 • “Geospatial data and technology will allow us to maximise our use of limited land resources” – Tan Boon Khai, CEO of Singapore Land Authority
  4. 4. STEP 1 – BUILD EXTENTS WITH AERIAL SURVEY
  5. 5. Step 1 – Aerial Survey
  6. 6. Step 1 – Aerial Survey • Capture of oblique and nadir imagery coupled with high density LiDAR • Post-processing and generation of DTM for entire nation • Generation of 3D Building Models (LOD2) based on CityGML standards
  7. 7. Step 1 – Aerial Survey • LiDAR flight path and coverage ( > 5pts / m² )
  8. 8. Step 1 – Aerial Survey • 10,279 nadir images and 41,088 oblique images (10cm res)
  9. 9. Step 1 – Aerial Survey • Generation of 3D Models
  10. 10. Step 1 – Aerial Survey • Generation of 3D Models (160,000)
  11. 11. Step 1 – Aerial Survey • Generation of 3D Models
  12. 12. STEP 2 – ADD EXTRA DETAIL AT GROUND LEVEL
  13. 13. Step 2 – Ground Survey
  14. 14. Step 2 – Ground Survey • Supply of a Mobile LiDAR and Imagery System • Services for data acquisition and processing for 5,500 km road network • Combination LiDAR and spherical imagery • Production of 3D Transportation, Relief and City Furniture Models in CityGML Format (LOD0 – LOD2).
  15. 15. Step 2 – Ground Survey • 580,000 million LiDAR points
  16. 16. Step 2 – Ground Survey • 487,480 panorama images generated (20m interval)
  17. 17. Step 2 – Ground Survey • 3D Model Library created
  18. 18. Step 2 – Ground Survey • 3D Models
  19. 19. STEP 3 – ENHANCE MODELS
  20. 20. Step 3 - Enhancement
  21. 21. Step 3 - Enhancement • Conduct enhancement of models produced from airborne survey – Airborne models suitable for viewing at large scale, but lacks detail at ground level • Upgrade textures on building façade and include “void deck” area • Models needed to be optimized for viewing over the web • Enhanced models will enable new possibilities in analysis and visualization
  22. 22. Step 3 – Enhancement • Void Decks
  23. 23. Step 3 – Enhancement • 3D Model Enhancement
  24. 24. Step 3 - Enhancement • Void Decks are a combination indoor / outdoor environment • Accuracy of input models – 0.5m • Major focuses of speed and presentation • How best to measure void deck geometry? • How to add void deck to existing model?
  25. 25. Step 3 - Enhancement Method • Take additional measurements and photos on site – Measurement for void deck modelling – Photos for texture upgrading • Optimize geometry of models and size of textures for viewing over the web • Output models in CityGML format
  26. 26. Step 3 – Enhancement • Modelling void decks – existing information
  27. 27. Step 3 – Enhancement • Modelling void decks – laser scanning
  28. 28. Step 3 – Enhancement • Modelling void decks
  29. 29. Step 3 – Enhancement • ‘Final’ product
  30. 30. STEP 4 – COME INSIDE…
  31. 31. Step 4 – Indoor Applications • Space Management Booking System
  32. 32. Step 4 – Indoor Applications Space Management Booking System • Integrated 2D / 3D browser based GIS booking system • New generation tools for marketing and building maintenance • Built on HTML5 for compatibility with mobile devices • No plugins, no apps required • Linkage to other systems (e.g. property tax)
  33. 33. SUMMARY
  34. 34. Geospatial Technology • Singapore’s 3D national map is a combination of a number of geospatial technologies and practices – Remote Sensing and Photogrammetry – LiDAR (airborne and terrestrial) – Land Surveying – GIS (software and data storage)
  35. 35. Here’s one I prepared earlier
  36. 36. Here’s one I prepared earlier
  37. 37. And most importantly

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