Table 1 Quantitative comparison of various repair algorithms under different mask rates

Evaluation indicators		PSNR↑	SSIM↑	L1↓	LPIPS↓	PIQE↓
Mask rate/contrast algorithm
1–10%	LEGNet	29.9352	0.8609	0.0211	0.0518	27.95
	DSNet	30.3821	0.9285	0.0185	0.0683	26.35
	T-former	32.4897	0.9424	0.0163	0.0472	25.48
	HINT	32.3207	0.9072	0.0079	0.0402	26.50
	PUT	32.6048	0.9285	0.0067	0.0374	24.11
	SEM	32.9407	0.9564	0.0056	0.0368	23.88
	Ours	33.8629	0.9591	0.0043	0.0341	22.60
10–20%	LEGNet	27.4934	0.8017	0.0256	0.0768	29.24
	DSNet	27.1532	0.8059	0.0296	0.1385	27.46
	T-former	27.5261	0.9026	0.0195	0.0723	27.83
	HINT	28.1864	0.8803	0.0127	0.0667	26.04
	PUT	28.3676	0.8926	0.0125	0.0708	26.35
	SEM	28.6235	0.9001	0.0105	0.0761	24.33
	Ours	28.8163	0.9119	0.0083	0.0651	23.21
20–30%	LEGNet	24.1258	0.7427	0.0314	0.1359	30.87
	DSNet	23.8412	0.7285	0.0374	0.2011	29.02
	T-former	24.5485	0.8106	0.0212	0.1271	28.82
	HINT	25.5085	0.7729	0.0187	0.0984	27.70
	PUT	25.5671	0.8115	0.0163	0.1314	28.46
	SEM	25.4709	0.8294	0.0194	0.1264	26.15
	Ours	25.6823	0.8329	0.0181	0.1244	24.31
30–40%	LEGNet	22.9024	0.7063	0.0347	0.1916	33.97
	DSNet	21.3902	0.6763	0.0473	0.2128	31.32
	T-former	22.8274	0.7275	0.0298	0.1863	30.42
	HINT	23.4516	0.7422	0.0292	0.1428	29.91
	PUT	21.8461	0.7176	0.0276	0.2193	29.08
	SEM	23.3368	0.7555	0.0271	0.1779	27.22
	Ours	23.7459	0.7631	0.0262	0.1752	26.31
Powder Mask	LEGNet	29.6843	0.8571	0.0238	0.0497	25.41
	DSNet	26.4456	0.8467	0.0283	0.1043	23.88
	T-former	32.6929	0.9245	0.0183	0.0396	22.21
	HINT	32.5332	0.9488	0.0085	0.0339	22.97
	PUT	32.8921	0.9583	0.0067	0.0352	21.64
	SEM	32.9810	0.9531	0.0064	0.0341	22.83
	Ours	33.9251	0.9662	0.0056	0.0330	20.62

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