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

Table 5

Results on MR images in Figure 4 by three methods (SR = 21.59%, 𝑠=8, 𝑝=2).

Image no.	Method	Exp. result
		SNR	Rel. err.	Iter
Figure 4(a)	CTVCS [6]	21.3881	1.23%	57
	TVCMRI [11]	21.9085	1.05%	71
	HQRCSparET	𝟐𝟒.𝟐𝟎𝟓𝟖	𝟎.𝟖𝟓%	64
Figure 4(b)	CTVCS [6]	24.4943	0.91%	56
	TVCMRI [11]	25.1557	0.81%	70
	HQRCSparET	𝟐𝟖.𝟓𝟐𝟑𝟎	𝟎.𝟔𝟕%	66
Figure 4(c)	CTVCS [6]	23.6254	1.20%	57
	TVCMRI [11]	23.9760	1.16%	71
	HQRCSparET	𝟐𝟗.𝟒𝟏𝟎𝟔	𝟎.𝟔𝟕%	65
Figure 4(d)	CTVCS [6]	19.5002	1.64%	57
	TVCMRI [11]	19.9529	1.57%	70
	HQRCSparET	𝟐𝟐.𝟓𝟑𝟐𝟖	𝟏.𝟎𝟖%	64
Figure 4(e)	CTVCS [6]	17.8911	2.76%	55
	TVCMRI [11]	18.0497	2.57%	57
	HQRCSparET	𝟏𝟗.𝟓𝟔𝟎𝟓	𝟐.𝟎𝟏%	65
Figure 4(f)	CTVCS [6]	19.0326	2.60%	54
	TVCMRI [11]	20.0130	2.49%	56
	HQRCSparET	𝟐𝟏.𝟒𝟖𝟑𝟑	𝟐.𝟎𝟓%	66