Table 1.
Representative spatial denoising methods
| Category | Point-based methods | PDE-based methods | Patch-based methods |
|---|---|---|---|
| Representative methods | Bilateral filtering [19] | PM model [16], complex diffusion filter [17], Ramp preserving Perona-Malik (RPPM) model [21], Rudin-Osher-Fatemi (ROF) model [22], and Adaptive total variation (ATV) model [20] | Non local means (NL-means) method [23], HS based method [13], and block matching and 3D filtering (BM3Da) [24] |
| Approach | Point similarity weight construction | Diffusion coefficient construction | Patch similarity weight construction |