Table 3.
Confusion matrix of visual classification (VC) versus Artificial Neural Network (ANN) classification. Feature codes have been abbreviated as follows: side bars (SB), erosion (ER), riffle (RI), deep water (DW), shallow water (SW), tree (TR), shadow (SH), vegetation (VG), vegetated bar (VB), vegetated bank (VK), submerged vegetation (SV), emergent vegetation (EV) and grass (GR). GE stands for georeferencing error.
| ANN Classification | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Feature | VC | SB | ER | RI | DW | SW | TE | SH | VG | GE | Total |
| SB | 1334 | 1097 | - | 8 | - | 2 | - | 10 | 214 | 3 | 1334 |
| ER | 287 | - | 22 | 13 | 1 | 3 | - | 10 | 238 | - | 287 |
| RI | 3339 | - | 1 | 2717 | - | 318 | - | 219 | 76 | 8 | 3339 |
| DW | 2082 | - | - | 60 | 1927 | 54 | - | 8 | 29 | 4 | 2082 |
| SW | 2573 | - | - | 262 | 80 | 1514 | - | 493 | 217 | 7 | 2573 |
| TR | 1755 | - | - | 76 | 1 | 29 | 496 | 135 | 1013 | 5 | 1755 |
| VB | 299 | - | - | - | - | - | - | - | 299 | - | 299 |
| VK | 313 | - | 10 | - | 6 | - | - | 15 | 281 | 1 | 313 |
| SV | 468 | - | - | 160 | - | 125 | - | 46 | 135 | 2 | 468 |
| EV | 71 | - | 1 | 9 | - | 2 | - | 1 | 58 | - | 71 |
| GR | 344 | - | - | - | - | - | - | - | 343 | 1 | 344 |
| SH | 220 | - | 4 | - | - | - | - | 180 | 31 | - | 220 |
| Total | 13,085 | 1097 | 38 | 3305 | 2015 | 2052 | 496 | 1117 | 2934 | 31 | 13,085 |