Marianne ErikssonStatistics SwedenBox 24300SE_10451 StockholmTel : +46 85069 4736 Fax : +46 85069 4348 E-mail : Marianne.Erikssons@scb.se

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