Table 4 The average PSNR and SSIM values for different patch and dictionary sizes (4 ×)
From: Noisy image magnification with total variation regularization and order-changed dictionary learning
Patch size | Dictionary size | |||||
|---|---|---|---|---|---|---|
256 | 512 | 1,024 | 256 | 512 | 1,024 | |
σ=5 | σ=10 | |||||
3 | 28.803 | 28.730 | 28.831 | 25.688 | 25.623 | 25.710 |
0.8333 | 0.8306 | 0.8354 | 0.6544 | 0.6575 | 0.6490 | |
5 | 28.799 | 28.769 | 28.877 | 25.637 | 25.704 | 25.607 |
0.8317 | 0.8289 | 0.8342 | 0.6498 | 0.6607 | 0.6505 | |
7 | 28.850 | 28.382 | 28.417 | 25.639 | 26.372 | 26.314 |
0.8328 | 0.8008 | 0.8031 | 0.6486 | 0.6780 | 0.6782 | |
σ=15 | σ=20 | |||||
3 | 22.076 | 22.027 | 21.945 | 19.302 | 19.217 | 19.366 |
0.3863 | 0.3892 | 0.3892 | 0.3472 | 0.3473 | 0.3455 | |
5 | 22.123 | 21.885 | 22.151 | 19.458 | 19.173 | 19.353 |
0.3971 | 0.3837 | 0.4024 | 0.3495 | 0.3413 | 0.3551 | |
7 | 21.962 | 23.776 | 23.777 | 19.212 | 21.650 | 21.870 |
0.3905 | 0.4734 | 0.4695 | 0.3397 | 0.4405 | 0.4628 | |