Marianne ErikssonStatistics SwedenBox 24300SE_10451 StockholmTel : +46 85069 4736 Fax : +46 85069 4348 E-mail : [email protected]
Delimitation of built-up areas using satellite images
Data sources3,2 milj. Real estateincl. data on population,establishments
3,1 milj.Buildings
Project partners: SCB, Metria/Environment
The project was mainly financed by Swedish National Space Board
Can satellite images be used in delimitation of built-up areas?
Can the quality be improved?
• SCBRegisters of real estate and buildings• ArcInfo, MapInfo
• Metria Evironment , Satellitdata from 2005
• SPOT-5 (10 m resolution)• SPOT-4 (20 m resolution)
• eCognition, ERDAS Imagine
Localities (3)
Smaller locality (1)
Concentration of holiday homes (2)
Concentration of workplaces outside localities (3)
Study areas
Data
• Satellitimages 2005 (SPOT-4 and SPOT-5)
• Digital roadmap
• Building register
• Swedish Corine (SMD)
• Borders for built-up areas for 2000
Sealed soil
Green vegetation
Forest
Forest
Segmentation of satellitdata
Vegetation and sealed soil are separated by a vegetation index
Diagram for classification in eCognition
Roads
Water
Buildings within a locality
Buildings outside a locality
Vegetation within a locality
Buildings with veg. outside a locality
Vegetation outside a locality
Buildings with veg. within a locality
Bare soil within a locality
Bare soil out-side a locality
Sealed soil within a locality
Sealed soil out-side a locality
Vegetation
Sealed soil without vegetation
Bare soil
Bulit-up areas without vegetationBulit-up areas with vegetation
Water
Roads
Validation localities
Smaller locality
Concentration of holiday homes
Concentration of workplaces outside localities