1. Marianne Eriksson Statistics Sweden Box 24300 SE_10451 Stockholm Tel : +46 85069 4736 Fax : +46 85069 4348 E-mail : Marianne.Erikssons@scb.se Delimitation of built-up areas using satellite images

2. Data sources 3,2 milj. Real estate incl. data on population, establishments 3,1 milj. Buildings

4. 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?

5. 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

6. Localities (3) Smaller locality (1) Concentration of holiday homes (2) Concentration of workplaces outside localities (3) Study areas

7. Data Satellitimages 2005 (SPOT-4 and SPOT-5) Digital roadmap Building register Swedish Corine (SMD) Borders for built-up areas for 2000

8. Sealed soil Green vegetation Forest

9. Segmentation of satellitdata Vegetation and sealed soil are separated by a vegetation index

10. 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

11. Vegetation Sealed soil without vegetation Bare soil Bulit-up areas without vegetation Bulit-up areas with vegetation Water Roads

12. Validation localities

14. Smaller locality

15. Concentration of holiday homes

16. Concentration of workplaces outside localities