EURASIP Journal on Advances in Signal Processing

Table 3 The average PSNR and SSIM values for different patch and dictionary sizes (3 ×)

From: Noisy image magnification with total variation regularization and order-changed dictionary learning

Patch size	Dictionary size
	256	512	1,024	256	512	1,024
	σ=5			σ=10
3	30.423	30.433	30.430	26.744	26.660	26.670
	0.8869	0.8857	0.8873	0.7198	0.7197	0.7179
5	30.422	29.883	30.437	26.660	27.567	26.572
	0.8858	0.8552	0.8879	0.7148	0.7570	0.7113
7	30.486	29.883	30.364	26.700	27.449	26.554
	0.8896	0.8576	0.8840	0.7173	0.7495	0.7076
	σ=15			σ=20
3	22.928	22.823	22.856	19.379	19.356	19.325
	0.4474	0.4432	0.4449	0.3381	0.3346	0.3395
5	22.989	24.848	22.933	19.317	22.020	19.399
	0.4523	0.5323	0.4513	0.3405	0.4493	0.3444
7	22.853	24.881	22.821	19.357	22.013	19.237
	0.4390	0.5373	0.4417	0.3350	0.4502	0.3347

PSNR, peak signal-to-noise ratio; SSIM, structural similarity.

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