1. GTECH 709 Earth From Above Reference to parallel course Raster data
Data sources
Application examples

2. GTECH 711 Virtual globe tools like Google Earth
Most geographic image data comes from satellites and airborne sensors, but you can even make your own DIY drone now
Geographic image data is raster data, which captures information by assigning values to cells in a grid

3. Raster Format
The size of raster grid cells determines how much resolution you have for the image

4. Example 1

5. Example 2

6. Example 3