Table 1 The number of regions and edges in smoothing method
From: Preservation of image edge feature based on snowfall model smoothing filter
Gaussian filter | Snowfall model | ||||
|---|---|---|---|---|---|
σ | Edge retention | Region | Amount | Edge retention | Region |
0.0 | 4799 | 3780 | 0 | 4799 | 3780 |
0.5 | 4309 | 3755 | 20 | 3031 | 3833 |
1.0 | 3034 | 3653 | 40 | 2290 | 3864 |
1.5 | 2107 | 3210 | 60 | 1721 | 3733 |
2.0 | 1570 | 2848 | 80 | 1400 | 3515 |
2.4 | 1220 | 2501 | 90 | 1222 | 3382 |