Video Enhancement from Multiple Compressed Copies in Transform Domain

EURASIP Journal on Image and Video Processing

Table 5 Average PSNR results (in dB) of the best input copy and the video reconstructed by the proposed method from multiple input copies compressed with different GOP structures at different target bit rates.

Sequence	No. of	400–600–800 (kbits/s)			700–900–1000 (kbits/s)
	copies	Best copy	Proposed	Gain	Best copy	Proposed	Gain
Foreman	2	37.19	37.55	0.36	38.93	39.61	0.68
	3	38.41	39.45	1.04	39.45	41.01	1.56
Mobile	2	22.54	23.03	0.49	23.86	25.26	1.40
	3	25.12	25.93	0.81	26.65	28.17	1.52
Mother and Daughter	2	43.93	44.30	0.37	45.23	45.87	0.64
	3	44.87	45.77	0.90	45.59	46.92	1.33
News	2	42.29	42.51	0.22	44.34	44.78	0.44
	3	44.04	44.67	0.63	45.19	46.23	1.04
Silent	2	39.02	39.33	0.31	41.40	41.91	0.51
	3	41.33	41.87	0.54	42.66	43.58	0.92
Flower	2	31.18	31.34	0.16	33.03	33.54	0.51
	3	32.94	33.87	0.93	33.78	35.44	1.66
Stefan	2	30.45	31.14	0.69	32.49	33.70	1.21
	3	31.32	33.01	1.69	32.51	35.02	2.51
Tennis	2	31.45	31.70	0.25	32.75	33.41	0.66
	3	32.62	33.48	0.86	33.14	34.65	1.51
Coastguard	2	32.45	32.88	0.43	34.06	34.89	0.83
	3	33.42	34.58	1.16	34.23	36.20	1.97
Tempete	2	31.52	31.83	0.31	33.23	33.87	0.64
	3	33.03	34.04	1.01	33.82	35.53	1.71