Table 1:
Model performance evaluated by various image quality metrics on both the entire image and only the cropped regions. Amount of cropping was fixed to 12.5%, similar to the training data. PSNR is measured in dB.
| Model | Whole | Cropped | ||||||
|---|---|---|---|---|---|---|---|---|
| SSIM | PSNR | MSE | Gradient | SSIM | PSNR | MSE | Gradient | |
| U-VQVAE | 0.9973 | 49.8733 | 1.089e-5 | 0.0209 | 0.9679 | 30.7809 | 8.535e-5 | 0.0041 |
| VQVAE | 0.8467 | 32.0512 | 5.437e-4 | 0.0064 | 0.9279 | 28.4808 | 1.449e-4 | 0.0034 |
| U-Net [13] | 0.9959 | 49.4796 | 1.152e-5 | 0.0210 | 0.9638 | 30.6117 | 8.723e-5 | 0.0039 |
| VAE-GAN | 0.8074 | 30.6311 | 2.919e-3 | 0.1206 | 0.8036 | 21.7169 | 2.348e-3 | 0.2033 |