Nonconvex Compressed Sampling of Natural Images and Applications to Compressed MR Imaging

Table 3

Results on natural images in Figure 1 by three methods (SR = 21.59%, 𝑠=8, 𝑝=2).

Image no.	Method	Exp. result
		SNR	Rel. err.	Iter
Figure 1(a)	FPC [10]	18.5257	5.51%	53
	TVCMRI [11]	21.1391	0.71%	62
	HQRCSparET	𝟐𝟏.𝟔𝟒𝟏𝟑	𝟎.𝟕𝟏%	65
Figure 1(b)	FPC [10]	20.0902	3.14%	53
	TVCMRI [11]	22.3289	0.60%	65
	HQRCSparET	𝟐𝟑.𝟖𝟏𝟔𝟖	𝟎.𝟒𝟓%	64
Figure 1(c)	FPC [10]	16.5973	4.89%	53
	TVCMRI [11]	18.3677	0.73%	62
	HQRCSparET	𝟐𝟎.𝟕𝟗𝟒𝟔	𝟎.𝟒𝟖%	65
Figure 1(d)	FPC [10]	13.8952	7.54%	53
	TVCMRI [11]	15.4621	1.74%	67
	HQRCSparET	𝟏𝟖.𝟒𝟕𝟑𝟏	𝟏.𝟎𝟓%	64
Figure 1(e)	FPC [10]	17.6930	4.88%	53
	TVCMRI [11]	20.5017	0.64%	64
	HQRCSparET	𝟐𝟒.𝟖𝟔𝟑𝟑	𝟎.𝟒𝟔%	64
Figure 1(f)	FPC [10]	19.8630	3.38%	53
	TVCMRI [11]	22.2937	0.98%	67
	HQRCSparET	𝟑𝟗.𝟖𝟖𝟖𝟒	𝟎.𝟏𝟖%	62