The classification accuracy was assessed using pixel-wise and
polygon-wise overall accuracy (OA) that were calculated for each
PT. The pixel-wise OA is the number of correctly classified pixels divided by the number of classified pixels. Polygon-wise OA is
the number of correctly classified polygons divided by the number
of classified polygons.
A polygon was considered correctly classified if a majority of the pixels within the polygon was classified in
the same class as that polygons class. A polygon was considered
classified if a majority of its pixels were classified into some of the
target classes. Non-vegetation pixels were excluded from the calculations.