Table 1 Parameter selection in terms of blur kernel and regularization parameter (case 1 is for the low-resolution image without ground truth; case 2 is for the low-resolution images acquired by downsampling the ground truth images)
From: Super-resolution via a fast deconvolution with kernel estimation
|  | Upscale factor | Size | Deviation | α |
|---|---|---|---|---|
Case 1 | 2 | 5×5 | 1.25 | 103 |
|  | 3 | 7×7 | 1.85 | 104 |
|  | 4 | 9×9 | 2.5 | 105 |
Case 2 | 2 | 3×3 | 1.5 | 103 |
|  | 3 | 5×5 | 1.8 | 104 |
|  | 4 | 7×7 | 2.3 | 105 |