Table 5.
Blue roof extraction results of different methods based on WorldView-2 imagery.
| Methods | Type | BO | Non-BO | Row total | PA (%) | UA (%) | OA (%) | KC |
|---|---|---|---|---|---|---|---|---|
| BRSAM | BO | 2462 | 102 | 2564 | 96.89 | 96.02 | 96.4662 | 0.9293 |
| Non-BO | 79 | 2479 | 2558 | 96.05 | 96.91 | |||
| Column total | 2541 | 2581 | 5122 | |||||
| BGOSI | BO | 2498 | 143 | 2641 | 98.31 | 94.59 | 96.3686 | 0.9274 |
| Non-BO | 43 | 2438 | 2481 | 94.46 | 98.27 | |||
| Column total | 2541 | 2581 | 5122 | |||||
| BOSI | BO | 2540 | 347 | 2887 | 99.96 | 87.98 | 93.2058 | 0.8643 |
| Non-BO | 1 | 2234 | 2235 | 86.56 | 99.96 | |||
| Column total | 2541 | 2581 | 5122 | |||||
| BRSAM + BGOSI + BOSI | BO | 2463 | 77 | 2540 | 96.93 | 96.97 | 96.9738 | 0.9395 |
| Non-BO | 78 | 2504 | 2582 | 97.02 | 96.98 | |||
| Column total | 2541 | 2581 | 5122 | |||||
| MLC | BO | 2541 | 578 | 3119 | 100.00 | 81.47 | 88.7153 | 0.7747 |
| Non-BO | 0 | 2003 | 2003 | 77.61 | 100.00 | |||
| Column total | 2541 | 2581 | 5122 |