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Table 5 PSNR [dB] and embedded bits (quantization table)

From: Fragile watermarking based on incomplete cryptography for copyright protection

Method Image P C P Emb. [bit] α
WQTB Title 31.84 13.18 28.99 416 0
  Lenna 32.37 17.49 31.72 416 0
  Girl 32.71 17.98 32.48 416 0
  Airplane 30.20 14.95 29.66 416 0
  Parrots 34.25 17.34 33.64 416 0
  Couple 34.06 19.78 33.76 416 0
  Milkdrop 31.94 27.36 31.88 1024 0
  Mandrill 24.96 23.57 24.95 1024 0
  Lighthouse 32.67 16.45 31.52 416 0
  Pepper 28.81 17.08 28.52 416 0
  Party 35.16 27.85 35.05 49152 0
  Picnic 34.39 27.61 34.28 49152 0
  Portrait 35.99 27.58 35.86 49152 0
AQTB Title 31.84 15.52 31.84 512 0
  Lenna 32.37 14.85 32.37 416 0
  Girl 32.71 23.10 32.71 424 0
  Airplane 30.20 19.61 30.20 336 0
  Parrots 34.25 20.31 34.25 344 0
  Couple 34.06 23.54 34.06 464 0
  Milkdrop 31.94 27.51 31.81 512 0
  Mandrill 24.96 21.03 24.93 512 0
  Lighthouse 32.67 18.27 32.67 512 0
  Pepper 28.81 17.40 28.81 344 0
  Party 35.16 16.87 34.91 24576 0
  Picnic 34.39 20.39 34.17 24576 0
  Portrait 35.99 15.47 35.69 24576 0