Table 2 Runtimes of different methods
From: SAR image segmentation using MSER and improved spectral clustering
Image number | Time of Nystrom method (s) | Time of Ncut method[33](s) (gray, 160 × 107) | Time of proposed method (s) | ||
|---|---|---|---|---|---|
| Â | Â | Â | Frost filtering + morphological closing | MSER | Improved SC |
Figure 3a | 11.085 | 5.204 | 0.042 | 0.038 | 0.578 |
Figure 3b | 12.732 | 5.613 | 0.045 | 0.039 | 0.673 |
Figure 3c | 12.955 | 4.995 | 0.048 | 0.036 | 0.622 |
Figure 3d | 11.634 | 4.036 | 0.046 | 0.033 | 0.624 |
Figure 3e (three classes) | 11.525 | 5.132 | 0.048 | 0.037 | 0.656 |
Figure 3e (five classes) | 13.789 | 6.473 | 0.048 | 0.037 | 0.773 |