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Beniamino Murgante
Beniamino Murgante

Third International Workshop on "Geographical Analysis, Urban Modeling, Spatial Statistics"

Technologie
1  sur  34
REMOTE SENSING AND URBAN ANALYSIS A. Bianchin, L. Bravin GEDDeS Laboratory – Planning Department University IUAV of Venice
Urban Analysis ,[object Object],[object Object],[object Object],[object Object]
Processing Techniques ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Processing Techniques ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Analist must ,[object Object],[object Object],[object Object],[object Object]
Case study Urban Phenomena at different scale ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
EXTRACTION OF BUILT SPACE ,[object Object],[object Object],[object Object],[object Object],[object Object]
LANDSAT ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SPOT_PAN ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PROCEDURE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IKONOS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IMAGES Landsat7 ETM+, Spatial resolution 30 m R:4;G:3,B:2 SPOT 4 Spatial resolution 10 m PAN IKONOS Spatial resolution 1 m R:4;G:3,B:2
BUILT SURFACES Landsat 7 Spatial resolution 30 m SPOT 4 Spatial resolution 10 m IKONOS Spatial resolution 1 m
ACCURACY ASSESSMENT ,[object Object],[object Object],[object Object]
Landsat OverallAccuracy 354/400=88,5% Spot OverallAccuracy 340/400=85,00% IKONOS OverallAccuracy 363/400=90,75%
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],ANALYSIS TECHNIQUES CHARACTERIZING URBAN SPACE
IKONOS_5 IKONOS_10
1. BUILT AREA SURFACE
RESULTS ,[object Object],[object Object],[object Object],[object Object]
2. DENSITY FUNCTION ,[object Object],[object Object],[object Object],[object Object],[object Object]
DENSITY FUNCTION ,[object Object],IKONOS Built space density classes over 5 images
RESULTS ,[object Object],[object Object],[object Object],[object Object]
DENSITY FUNCTION - CROSS TABLES ,[object Object],[object Object]
In blue : Distribution of each density class of Spot into IKONOS classes. (percentage values) In pink: Distribution of each density class of IKONOS into Spot classes (percentage values) Cross table Graphic representation of cross table
RESULTS ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],DENSITY FUNCTION - CONCLUSIONS
3. LANDSCAPE INDEXES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],landscapes with few regions landscapes with several regions
WORKING STEPS ,[object Object],[object Object],[object Object],[object Object]
Five sub-areas ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
1_compact core; 2_suburban area; 3_connection area; 4_scattered settlements; 5_ industrial area
Study Area Indexes for the 5 sub-areas 1-2 Concentrated urban areas: uniform and compact in Landsat and Spot; a dense set of single elements in IKONOS. 3-4 Fragmented areas are represented by numerous patches spread over the territory whose minimum size is defined by pixel size. 5 Representation of industrial area similar over scales, shaped into a set of medium-wide sized patches
[object Object],[object Object],[object Object],LANDSCAPE STATISTICS - CONCLUSION
CONCLUSIONS ,[object Object],[object Object],[object Object],[object Object],[object Object]

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Bianchin

  • 1. REMOTE SENSING AND URBAN ANALYSIS A. Bianchin, L. Bravin GEDDeS Laboratory – Planning Department University IUAV of Venice
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  • 13. IMAGES Landsat7 ETM+, Spatial resolution 30 m R:4;G:3,B:2 SPOT 4 Spatial resolution 10 m PAN IKONOS Spatial resolution 1 m R:4;G:3,B:2
  • 14. BUILT SURFACES Landsat 7 Spatial resolution 30 m SPOT 4 Spatial resolution 10 m IKONOS Spatial resolution 1 m
  • 15.
  • 16. Landsat OverallAccuracy 354/400=88,5% Spot OverallAccuracy 340/400=85,00% IKONOS OverallAccuracy 363/400=90,75%
  • 17.
  • 19. 1. BUILT AREA SURFACE
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  • 25. In blue : Distribution of each density class of Spot into IKONOS classes. (percentage values) In pink: Distribution of each density class of IKONOS into Spot classes (percentage values) Cross table Graphic representation of cross table
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  • 31. 1_compact core; 2_suburban area; 3_connection area; 4_scattered settlements; 5_ industrial area
  • 32. Study Area Indexes for the 5 sub-areas 1-2 Concentrated urban areas: uniform and compact in Landsat and Spot; a dense set of single elements in IKONOS. 3-4 Fragmented areas are represented by numerous patches spread over the territory whose minimum size is defined by pixel size. 5 Representation of industrial area similar over scales, shaped into a set of medium-wide sized patches
  • 33.
  • 34.