Harvard University Graduate School of Design Exploring 30 Years of Land Use Change: Landsat Time Series Images and Simple Image Classification Techniques Paul Cote Lecturer in Landscape Architecture / Urban Planning

Harvard University Graduate School of Design 250 Architecture50 Urban Planning 100 Urban Design100 Landscape 500 Design Students

Harvard University Graduate School of Design GSD Studio Culture: Focus on representing, understanding, modifying and evaluating places: Appearance Performance Intense interest in Spatial Information and Spatial Analysis A Representation Engine

Harvard University Graduate School of Design GSD’s Collection of GIS Tutorials Or Google “GIS Manual”

Harvard University Graduate School of Design GSD’s Collection of GIS Tutorials

Harvard University Graduate School of Design Image Classification Tutorial

Harvard University Graduate School of Design Free Data: NASA’s Mission to Earth North American Landscape Characterization Orthorectified, Georeferenced Selected Cloud free Images from 1975, 1985, 1995 $20 from NASA Free for download from University of Maryland Global Land Cover Facility

Harvard University Graduate School of Design Free Tools: Multispec Image Classifier From Purdue University Runs on Macintosh or Windows Many different classification algorithms Exchanges data with ArcGIS

Harvard University Graduate School of Design Classification Procedure: 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

Harvard University Graduate School of Design Cape Cod 1977

Harvard University Graduate School of Design Cape Cod 1999

Harvard University Graduate School of Design Unsupervised Clustering 1977

Harvard University Graduate School of Design Grouped Clusters 1977

Harvard University Graduate School of Design Unsupervised Clustering 1999

Harvard University Graduate School of Design Grouped Clusters 1999

Harvard University Graduate School of Design Reclassified Clusters 1977

Harvard University Graduate School of Design Reclassified Clusters 1977

Harvard University Graduate School of Design Change

Harvard University Graduate School of Design Change

Harvard University Graduate School of Design Caveats: 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.

Harvard University Graduate School of Design On-Line Tutorial with Cape Cod Images: Paul Cote Lecturer in Landscape Architecture / Urban Planning

Harvard University Graduate School of Design Exploring 20 Years of Land Use Change: Free Data: Landsat Time Series Images Free Tools: Multispec Image Classifier 1999 Image 1977 ImageClustered Reclassified: Forested / Not Clustered Reclassified: Forested / Not Indicated Change: Deforested Reforested