Table 4.

The effects of DWT and various loss functions on PSNR and SSIM for test sequences. √ indicates that the feature or component was enabled, while × signifies that it was not enabled.

Method	${\mathit{L}}_{\mathit{cha}}$	${\mathit{L}}_{\mathit{ssim}}$	${\mathit{L}}_{\mathit{per}}$	Δ PSNR	Δ SSIM
w/o DWT ELPNet	√	×	×	0.40	0.97
ELPNet	√	×	×	0.48	1.24
ELPNet	√	√	×	0.49	1.29
ELPNet	√	√	√	0.51	1.32