Research Article
Sparse Signal Inversion with Impulsive Noise by Dual Spectral Projected Gradient Method
Table 2
Restoration of four images with different salt-and-pepper noise levels.
| | Noise level | Lena | Boat | Barbara | Goldhill | Cameraman | Peppers | Mandrill | Pirate |
| | 0.05 | 26.21 | 25.16 | 22.16 | 25.58 | 25.12 | 26.25 | 26.68 | 25.09 | | 0.08 | 24.87 | 23.88 | 21.52 | 25.17 | 25.03 | 26.11 | 26.16 | 25.01 | | 0.10 | 22.82 | 21.56 | 20.35 | 24.07 | 24.23 | 25.01 | 25.32 | 24.58 | | 0.15 | 20.42 | 19.55 | 19.23 | 22.74 | 22.42 | 23.16 | 23.85 | 22.75 |
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