We included the Normalized
Difference Vegetation Index (NDVI) image as additional layer for
maximum likelihood classification of each subset. Also the three
shade-normalized fraction images were included as input layers
in the supervise classification for the urban subset. Therefore, 10 “bands”
were actually used for the urban subset (i.e., 6 reflectance bands, 3 fraction bands, and NDVI), and 7 “bands”
(i.e., 6 reflectance bands and NDVI) were included for the rural subset.
Finally, we combined the classified outcomes from the two
subsets and the previously extracted urban classes to produce a
complete map.