Table 2 Indicative classification accuracy of the multiple date images of the study sites
Overall classification accuracy (%), per study site | ||||
|---|---|---|---|---|
Stevenson-Hamilton | Ngwenyeni | Nhlowa | Mooiplaas | |
(a) SPOT images | ||||
SPOT, 2012 | 95.0 | 93.8 | 89.0 | 91.5 |
SPOT, 1998 | 90.3 | 89.1 | 92.4 | 88.9 |
(b) Aerial photographs | ||||
1940/1942 | 74.9 | 80.2 | a | 86.8 |
1968 | 70.2 | 75.7 | 79.7 | 74.3 |
1977 | 84.6 | 87.3 | 89.1 | 88.7 |