Imagery for impact The colours of Keytah
The algorithm behind our DEA Fractional Cover turns complex satellite image capture sensitivities into simple colours for easy interpretation
Published:6 January 2014
Covering approximately 65,000 acres of land in western New South Wales, Keytah Station is a large-scale cropping operation near Moree.
A slice from the vast national Digital Earth Australia (DEA) Fractional Cover dataset shows what Landsat satellites saw over Keytah during the four years from 1988 to 2012.
The animation below shows approximately 'one month per second' of Keytah’s changing land cover types over the four years.
DEA Fractional Cover allocates a colour range to three vegetation types:
- Red colour represents bare soils
- Green colour represents green vegetation
- Blue colour represents ‘non-green’ vegetation. This is vegetation the satellites recognise as being non-photosynthetic, such as leafless trees during autumn and dry grasses
Mapping new opportunities for farmers
Digital Earth Australia provides seed funding to help farmers get the most from satellite imagery