Restoring Poissonian Images by a Combined First-Order and Second-Order Variation Approach

Table 2

Restoration results with different methods for Example  1, Example  2, and Example  3.

	Method	Parameter	SNR	ReErr
Example  1	Tikhonov	𝛼=400	8.725	0.2657
	TV	𝛼=65	14.321	0.0895
	HTV	𝛼=80	14.001	0.0930
	Hybrid TV	𝛼=60	14.538	0.0871
Example  2	Tikhonov	𝛼=500	9.728	0.2223
	TV	𝛼=30	15.811	0.0758
	HTV	𝛼=80	16.022	0.0740
	Hybrid TV	𝛼=40	16.323	0.0718
Example  3	Tikhonov	𝛼=400	6.924	0.4369
	TV	𝛼=50	13.675	0.2007
	HTV	𝛼=15	11.566	0.2559
	Hybrid TV	𝛼=70	14.912	0.1690