Table 1.

Performance of different methods on the GBM dataset.

	Method	Dictionary Size=256	Dictionary Size=512	Dictionary Size=1024
160 training	PSD2SPMNR	91.85 ± 1.03	91.86 ± 0.78	92.07 ± 0.65
	PSD1SPMNR	91.85 ± 0.69	91.89 ± 0.99	91.74 ± 0.85
	PSD1SPMLR [9]	91.02 ± 1.89	91.41 ± 0.95	91.20 ± 1.29
	ScSPM [34]	79.58 ± 0.61	81.29 ± 0.86	82.36 ± 1.10
	KSPM [24]	85.00 ± 0.79	86.47 ± 0.55	86.81 ± 0.45
	CTSPM	78.61 ± 1.33	78.71 ± 1.18	78.69 ± 0.81
80 training	PSD2SPMNR	90.51 ± 1.06	90.88 ± 0.66	90.51 ± 1.06
	PSD1SPMNR	90.74 ± 0.95	90.42 ± 0.94	89.70 ± 1.20
	PSD1SPMLR [9]	88.63 ± 0.91	88.91 ± 1.18	88.64 ± 1.08
	ScSPM [34]	77.65 ± 1.43	78.31 ± 1.13	81.00 ± 0.98
	KSPM [24]	83.81 ± 1.22	84.32 ± 0.67	84.49 ± 0.34
	CTSPM	75.93 ± 1.18	76.06 ± 1.52	76.19 ± 1.33
40 training	PSD2SPMNR	87.90 ± 0.91	88.21 ± 0.90	87.71 ± 0.81
	PSD1SPMNR	87.72 ± 1.21	86.99 ± 1.76	86.33 ± 1.32
	PSD1SPMLR [9]	84.06 ± 1.16	83.72 ± 1.46	83.40 ± 1.14
	ScSPM [34]	73.60 ± 1.68	75.58 ± 1.29	76.24 ± 3.05
	KSPM [24]	80.54 ± 1.21	80.56 ± 1.24	80.46 ± 0.56
	CTSPM	73.10 ± 1.51	72.90 ± 1.09	72.65 ± 1.41