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Paul Cote Lecturer in Landscape Architecture / Urban Planning

Exploring 30 Years of Land Use Change: Landsat Time Series Images and Simple Image Classification Techniques. Paul Cote Lecturer in Landscape Architecture / Urban Planning. 500 Design Students. 250 Architecture 50 Urban Planning 100 Urban Design 100 Landscape. A Representation Engine.

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Paul Cote Lecturer in Landscape Architecture / Urban Planning

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  1. Exploring 30 Years of Land Use Change:Landsat Time Series Images and Simple Image Classification Techniques Paul Cote Lecturer in Landscape Architecture / Urban Planning

  2. 500 Design Students 250 Architecture 50 Urban Planning 100 Urban Design 100 Landscape

  3. A Representation Engine • GSD Studio Culture: • Focus on representing, understanding, modifying and evaluating places: • Appearance • Performance • Intense interest in Spatial Information and Spatial Analysis

  4. GSD’s Collection of GIS Tutorials • http://www.gsd.harvard.edu/gis/manual • Or Google “GIS Manual”

  5. GSD’s Collection of GIS Tutorials

  6. Image Classification Tutorial

  7. Free Data:NASA’s Mission to Earth North American Landscape Characterization • Orthorectified, Georeferenced • Selected Cloud free Images from 1975, 1985, 1995 • $20 from NASA http://eros.usgs.gov/products/satellite/nalc.html • Free for download from University of Maryland Global Land Cover Facilityhttp://glcf.umiacs.umd.edu

  8. Free Tools:Multispec Image Classifier • From Purdue University • Runs on Macintosh or Windows • Many different classification algorithms • Exchanges data with ArcGIS

  9. Composite Image bands: Green, Red Infrared Cluster pixels statistically (Iso Cluster) Manually inspect and group clusters into land cover classes for sample of image Reclassify Bring to ArcGIS to find areas of change Classification Procedure:

  10. Cape Cod 1977

  11. Cape Cod 1999

  12. Unsupervised Clustering 1977

  13. Grouped Clusters 1977

  14. Unsupervised Clustering 1999

  15. Grouped Clusters 1999

  16. Reclassified Clusters 1977

  17. Reclassified Clusters 1977

  18. Change 1977-1999

  19. Change 1977-1999

  20. This analysis is far from scientific The method is strictly exploratory It is useful for highlighting areas for closer inspection Intended primarily to introduce data resources, tools and classification techniques. Caveats:

  21. www.gsd.harvard.edu/gis/manual/image_class On-Line Tutorial with Cape Cod Images: Paul Cote Lecturer in Landscape Architecture / Urban Planning

  22. Exploring 20 Years of Land Use Change:Free Data: Landsat Time Series Images Free Tools: Multispec Image Classifier Reclassified: Forested / Not Indicated Change: Deforested Reforested 1977 Image Clustered Reclassified: Forested / Not 1999 Image Clustered

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