Image Processing
Georectifying – Enhancement and Mosaicing

Figure 1: Composition of MERIS scenes of Europe. Source: ESA.

1.	Explain why we enhance data.
2.	Speculate how the satellite scenes in the image above were manipulated. Which type of image processing did they go through?
3.	Describe and interpret variations in colour between the different scenes. 
a.	What could the white spots above Iceland represent? 
b.	What might be the white areas in the Southern Mediterranean Sea?
4.	Speculate how the satellite scenes in the image above were manipulated. Which type of image processing did they go through? (for an example, see the satellite mosaic of Europe on Worksheet 4)