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Table 7 Average PSNR results (in dB) of the best input copy and the video reconstructed by the proposed method from multiple copies of a situation comedy compressed with different GOP structures and different target bit rates.

From: Video Enhancement from Multiple Compressed Copies in Transform Domain

Sequence No. of 500–700–900 (kbits/s) 900–1100–1300 (kbits/s)
  copies Best copy Proposed Gain Best copy Proposed Gain
Ballroom dancing 2 37.48 38.11 0.63 39.51 40.50 0.99
  3 39.01 39.78 0.77 40.46 41.74 1.28
Superbowl 2 37.23 38.02 0.79 39.38 40.50 1.12
  3 38.96 39.84 0.88 40.40 41.86 1.46
Football 2 36.44 37.11 0.67 38.56 39.65 1.09
  3 38.00 38.85 0.85 39.46 40.86 1.40
London 2 36.89 37.44 0.55 38.67 39.60 0.93
  3 37.67 38.75 1.08 38.97 40.62 1.65
Routine 2 34.68 34.95 0.27 36.80 37.48 0.68
  3 35.50 36.34 0.84 37.21 38.58 1.37
Rugby 2 33.35 33.76 0.41 35.54 36.38 0.84
  3 34.82 35.61 0.79 36.51 37.84 1.33
Soldier 2 36.70 37.38 0.68 38.62 39.78 1.16
  3 38.44 39.24 0.80 40.63 42.43 1.80
Vegas 2 35.73 36.12 0.39 38.01 38.84 0.83
  3 36.86 37.69 0.83 38.57 40.01 1.44