Double Regression-Based Sparse Unmixing for Hyperspectral Images

Table 2

SRE (dB), rRMSE, time (s), and parameters of each algorithm for DC2.

SNR	Criteria	SUnSAL	CLSUnSAL	SUnSAL-TV	CSUnL0	S^2WSU-W1
20 dB	SRE (dB)	4.2673	3.4011	10.9791	6.8322	9.1641	18.7322
	rRMSE	0.0044	0.0046	0.0037	0.0042	0.0039	0.0019
	Time (s)	5.80	13.51	114.62	49.84	52.36	10.82
	Parameters						,; ,
30 dB	SRE (dB)	10.4529	7.3505	17.8078	17.4521	19.2785	21.3605
	rRMSE	0.0038	0.0041	0.0022	0.0022	0.0017	0.0013
	Time (s)	7.74	16.04	115.17	51.06	53.49	12.36
	Parameters						,; ,
40 dB	SRE (dB)	13.3724	12.7233	20.6522	21.2153	23.8638	25.1639
	rRMSE	0.0031	0.0033	0.0015	0.0013	0.00011	0.0009
	Time (s)	6.33	11.28	116.34	46.59	51.08	12.68
	Parameters						,; ,