From: SSIM-inspired image restoration using sparse representation
Image | Barbara | Lena | Peppers | House | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Noise std | 20 | 25 | 50 | 100 | 20 | 25 | 50 | 100 | 20 | 25 | 50 | 100 | 20 | 25 | 50 | 100 |
PSNR comparison (in dB) | ||||||||||||||||
   Noisy | 22.11 | 20.17 | 14.15 | 8.13 | 22.11 | 20.17 | 14.15 | 8.13 | 22.11 | 20.17 | 14.15 | 8.13 | 22.11 | 20.17 | 14.15 | 8.13 |
   K-SVD | 30.85 | 29.55 | 25.44 | 21.65 | 32.38 | 31.32 | 27.79 | 24.46 | 30.80 | 29.72 | 26.10 | 21.84 | 33.16 | 32.12 | 28.08 | 23.54 |
   Proposed | 30.88 | 29.53 | 25.50 | 21.74 | 32.26 | 31.28 | 27.80 | 24.53 | 30.84 | 29.84 | 26.25 | 21.98 | 33.04 | 32.09 | 28.13 | 23.59 |
SSIM comparison | ||||||||||||||||
   Noisy | 0.593 | 0.503 | 0.241 | 0.084 | 0.531 | 0.443 | 0.204 | 0.074 | 0.529 | 0.442 | 0.212 | 0.076 | 0.452 | 0.368 | 0.166 | 0.057 |
   K-SVD | 0.894 | 0.859 | 0.708 | 0.519 | 0.903 | 0.877 | 0.733 | 0.550 | 0.905 | 0.883 | 0.782 | 0.601 | 0.909 | 0.890 | 0.779 | 0.549 |
   Proposed | 0.906 | 0.875 | 0.733 | 0.526 | 0.913 | 0.888 | 0.754 | 0.573 | 0.913 | 0.894 | 0.797 | 0.627 | 0.915 | 0.901 | 0.795 | 0.574 |