A Nonmonotone Gradient Algorithm for Total Variation Image Denoising Problems

Table 1

Numerical comparison for images (a)–(d) in Figure 1.

	Barbara		Boats		Satellite		Pepper		Average
	PSNR	Error	PSNR	Error	PSNR	Error	PSNR	Error	PSNR	Error
PG_Chambolle	28.8919	0.0735	29.1882	0.0654	29.5731	0.1077	29.4148	0.0662	29.2670	0.0782
SPG_Birgin	29.7996	0.0662	30.4961	0.0562	32.4344	0.0775	30.8096	0.0564	30.8849	0.0641
FPG_Beck	28.9254	0.0732	29.2779	0.0647	31.2876	0.0884	29.4227	0.0661	29.7284	0.0731
ASPG	30.2991	0.0625	31.3927	0.0507	32.6485	0.0756	32.0317	0.0490	31.5930	0.0594