Image Processing Reference
In-Depth Information
13.4
Case Studies
This section briefly presents an application example of how remote sensing has been
used to investigate urbanization processes in desert cities. The discussed example
includes two multi-temporal studies conducted in two different sites in Morocco and
Saudi Arabia respectively. The methodologies adopted in the two studies are slightly
different, but the main steps are similar and are summarized below (Fig. 13.3 ).
13.4.1
Adopted Methodology
Geographical Study : An intensive geographical study was conducted through
analysis of the existing and available literature. It included a description of physical
conditions, i.e., climate, erosion, land, water, and vegetation; but also the character-
ization of the impact of human and animal pressures and severe climate conditions.
Ancillary Data
Satellite Imagery
- Landsat or Spot Imagery
- Dates 1, 2 & 3
- Topographic Maps
- Road Network Maps
- Administrative Boundaries
Geographical Information
System (GIS)
Image Analysis
System (IAS)
- Analysis of Land Use Maps
- Creation of the Evolution Map
- Urbanization Impact
Assessment
- Overlay Urban Areas/Roads
- Rectification/Registration
- Choice of Bands
- Sub-setting of Images
- Visual Interpretation
Intermediate Results
- Land Use Maps 1, 2, 3
- Statistics (1, 2, 3)
Final Results
land use maps
- Land Use Maps
- Evolution Maps
- Impact Maps
- Statistical Inventory
land use maps
Ground Truthing
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