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

Table 6

Results on MR images in Figure 4 by three methods (SR = 12.91%, 𝑠=8, 𝑝=2).

Image no.	Method	Exp. result
		SNR	Rel. err.	Iter
Figure 4(a)	CTVCS [6]	14.9796	3.19%	57
	TVCMRI [11]	15.4836	2.48%	58
	HQRCSparET	𝟏𝟕.𝟐𝟔𝟕𝟏	𝟏.𝟗𝟒%	65
Figure 4(b)	CTVCS [6]	18.0811	2.72%	56
	TVCMRI [11]	19.8468	1.52%	58
	HQRCSparET	𝟐𝟏.𝟔𝟔𝟎𝟐	𝟏.𝟐𝟔%	66
Figure 4(c)	CTVCS [6]	14.8695	7.92%	58
	TVCMRI [11]	17.7077	2.99%	56
	HQRCSparET	𝟏𝟗.𝟐𝟑𝟑𝟗	𝟐.𝟐𝟑%	66
Figure 4(d)	CTVCS [6]	12.1082	4.80%	58
	TVCMRI [11]	12.8954	3.70%	58
	HQRCSparET	𝟏𝟓.𝟎𝟎𝟓𝟐	𝟐.𝟗𝟒%	65
Figure 4(e)	CTVCS [6]	12.6082	5.60%	55
	TVCMRI [11]	13.8043	4.35%	58
	HQRCSparET	𝟏𝟒.𝟔𝟏𝟓𝟐	𝟒.𝟎𝟒%	65
Figure 4(f)	CTVCS [6]	12.5622	5.75%	54
	TVCMRI [11]	15.0856	4.28%	55
	HQRCSparET	𝟏𝟔.𝟎𝟎𝟓𝟒	𝟒.𝟎𝟕%	66