Key-Frame Detection and Super-Resolution of Hyperspectral Video via Sparse-Based Cumulative Tensor Factorization

Table 2

SR quantitative results (entropy and average gradient) of the test methods on key-frames.

Methods	LR frame		Bicubic interpolation		Sparse representation-based SR [54]		Sequence information-based SR [65]		STTF-based SR
Frame	Entropy	Average gradient	Entropy	Average gradient	Entropy	Average gradient	Entropy	Average gradient	Entropy	Average gradient
14	5.1603	0.0076	5.3744	0.0052	5.4996	0.0078	5.4259	0.0090	5.6098	0.0121
15	4.7086	0.0077	5.1407	0.0063	5.2398	0.0089	5.2184	0.0103	5.3678	0.0139
16	5.5521	0.0084	5.8013	0.0060	5.8765	0.0085	5.8203	0.0103	5.9772	0.0135
17	5.5293	0.0086	5.7054	0.0056	5.7918	0.0081	5.6125	0.0094	5.8831	0.0129
18	4.2989	0.0072	4.8339	0.0062	4.9794	0.0088	5.0423	0.0106	5.1108	0.0138
19	4.4843	0.0073	5.0045	0.0063	5.1327	0.0089	5.1831	0.0106	5.2644	0.0140
20	5.1442	0.0075	5.4307	0.0060	5.5039	0.0086	5.3987	0.0099	5.6122	0.0137
21	4.8821	0.0071	5.2234	0.0060	5.3264	0.0086	5.2578	0.0100	5.4491	0.0137
22	4.3472	0.0067	4.8929	0.0065	4.9858	0.0090	4.9409	0.0102	5.1261	0.0141
23	4.6127	0.0067	5.0430	0.0061	5.1534	0.0086	5.0806	0.0098	5.2823	0.0135
24	4.4189	0.0064	4.8688	0.0060	4.9850	0.0085	4.8916	0.0096	5.1168	0.0133
25	4.3273	0.0066	4.9091	0.0066	5.0061	0.0091	4.9607	0.0103	5.1494	0.0143
26	4.1394	0.0064	4.7589	0.0066	4.8438	0.0090	4.8078	0.0103	4.9919	0.0141
27	4.1127	0.0065	4.6995	0.0066	4.7878	0.0091	4.7713	0.0104	4.9366	0.0142
28	3.9657	0.0061	4.6576	0.0066	4.7467	0.0091	4.7507	0.0107	4.8902	0.0142
29	4.1885	0.0063	4.7545	0.0064	4.8611	0.0088	4.8481	0.0101	5.0066	0.0137
30	3.9672	0.0063	4.6345	0.0067	4.7253	0.0092	4.7241	0.0106	4.8752	0.0144
31	3.9440	0.0061	4.6135	0.0065	4.7131	0.0090	4.7349	0.0104	4.8654	0.0141
32	3.8661	0.0060	4.5799	0.0064	4.6914	0.0088	4.6971	0.0101	4.8497	0.0138
33	4.0479	0.0060	4.7100	0.0064	4.8126	0.0088	4.8114	0.0100	4.9631	0.0137
34	4.1691	0.0060	4.7824	0.0066	4.8621	0.0088	4.8462	0.0102	5.0072	0.0136
35	4.0933	0.0062	4.7169	0.0067	4.8010	0.0091	4.8245	0.0108	4.9515	0.0143
36	3.9157	0.0063	4.5995	0.0067	4.6881	0.0092	4.6712	0.0103	4.8508	0.0142
37	3.7810	0.0059	4.5028	0.0064	4.6088	0.0089	4.5984	0.0100	4.7666	0.0138
38	3.8814	0.0061	4.5479	0.0065	4.6483	0.0090	4.6395	0.0101	4.8050	0.0140
39	4.3168	0.0060	4.8397	0.0061	4.9406	0.0084	4.9135	0.0099	5.0792	0.0130
40	3.9333	0.0061	4.6597	0.0067	4.7380	0.0091	4.7209	0.0104	4.8906	0.0142
41	4.2009	0.0063	4.7897	0.0066	4.8711	0.0089	4.8346	0.0102	5.0138	0.0138
42	4.1083	0.0063	4.7514	0.0067	4.8362	0.0091	4.8398	0.0103	4.9836	0.0142
43	4.0485	0.0063	4.6827	0.0067	4.7602	0.0091	4.7117	0.0101	4.9109	0.0142
44	4.0521	0.0062	4.6510	0.0063	4.7587	0.0087	4.7273	0.0097	4.9165	0.0136
45	4.3442	0.0060	4.9011	0.0061	5.0079	0.0085	4.9380	0.0097	5.1413	0.0134
46	4.0006	0.0061	4.5913	0.0062	4.7080	0.0087	4.6467	0.0097	4.8587	0.0136
47	4.4749	0.0062	5.0109	0.0060	5.1015	0.0084	5.0007	0.0095	5.2302	0.0131
48	4.0685	0.0065	4.6843	0.0065	4.7859	0.0090	4.7607	0.0101	4.9384	0.0141
Avg.	4.3167	0.0066	4.8671	0.0063	4.9651	0.0088	4.9329	0.0101	5.1049	0.0138