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Exercise 2: Change detection – band math
 
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Download:
  HI-RES JPEG (Size: 189 kb)
An example of subtracting one of the filtered “dry” images (25102005_f) from the filtered “flooded” image (10102006_f).

Credits: ESA
 
 
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Final result
Download:
  HI-RES JPEG (Size: 183 kb)
Final result of the subtraction of the average of dry images from the post-flood image.

Credits: ESA
 


Flash floods in Thessaloniki
IntroductionBackground
Exercises
Exercise 1: Inspecting the imagesExercise 3: Change detection – Multi-temporal analysisExercise 4: GIS
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Thessaloniki.zip
 
 
 
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