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Table 3 The PSNR of each method for removing scratches (Unit: dB)

From: Image restoration based on sparse representation using feature classification learning

  BSCB TV DCT K-SVD NLPB Proposed method
Baboon 43.56 43.82 43.87 44.36 43.43 44.08
Barbara 44.79 46.44 46.03 47.06 46.66 47.42
Cameraman 47.52 47.74 46.94 45.85 48.14 46.37
Couple 46.06 47.18 46.01 46.24 46.39 46.79
House 46.93 47.85 46.33 47.49 49.49 49.08
Lena 46.18 46.84 45.83 47.03 46.82 46.62