Table 4 Ablation study of parameter \(\alpha\) in the loss function.
\(\alpha\) | d | HR_image_size | \(\text {PSNR}\uparrow\) | \(\text {SSIM}\uparrow\) | \(\text {SAM}\downarrow\) | \(\text {ERGAS}\downarrow\) | \(\text {CC}\uparrow\) |
|---|---|---|---|---|---|---|---|
0.1 | 4 | 64 × 64 | 39.7432 | 0.9053 | 9.7285 | 6.2728 | 0.8725 |
0.01 | 4 | 64 × 64 | 39.7431 | 0.9046 | 9.7258 | 6.3828 | 0.8718 |
0.001 | 4 | 64 × 64 | 39.7734 | 0.9047 | 9.6871 | 6.2503 | 0.8739 |
0.0001 | 4 | 64 × 64 | 39.6636 | 0.9036 | 9.9310 | 6.3742 | 0.8679 |
0.1 | 4 | 128 × 128 | 39.0091 | 0.9269 | 12.6583 | 8.7147 | 0.9449 |
0.01 | 4 | 128 × 128 | 39.0488 | 0.9322 | 12.7041 | 8.8514 | 0.9450 |
0.001 | 4 | 128 × 128 | 39.2985 | 0.9348 | 12.1268 | 8.4724 | 0.9560 |
0.0001 | 4 | 128 × 128 | 39.1779 | 0.9335 | 12.6128 | 8.6061 | 0.9466 |
0.1 | 4 | 256 × 256 | 38.4313 | 0.9248 | 12.1535 | 7.5097 | 0.9423 |
0.01 | 4 | 256 × 256 | 38.5040 | 0.9262 | 12.1042 | 7.5257 | 0.9433 |
0.001 | 4 | 256 × 256 | 38.9427 | 0.9332 | 11.5610 | 7.1167 | 0.9491 |
0.0001 | 4 | 256 × 256 | 38.5252 | 0.9261 | 12.1132 | 7.4496 | 0.9433 |
