Table 4.

Comparisons of ablating different components of the loss function on 8x SR.

Loss	Pix	Per	Gra	PSNR↑	SSIM↑
1	√	×	×	28.18	0.6645
2	×	√	×	25.68	0.4913
3	×	×	√	28.17	0.6756
4	√	√	√	28.55	0.6786