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Table 4 Performances against global geometrical attacks in StirMark 4.1

From: Counteracting geometrical attacks on robust image watermarking by constructing a deformable pyramid transform

Attack Tank Globe Lena Man Zelda
DMST DPT DMST DPT DMST DPT DMST DPT DMST DPT
RotCrp. Ok Ok Ok Ok Ok Ok Ok Ok Ok Ok
RotScl. Ok Ok Ok Ok Ok Ok Ok Ok Ok Ok
Scaling 0.5 to 1.81 0.6 to 2 0.5 to 1.5 0.6 to 2 0.5 to 1.63 0.7 to 1.9 0.5 to 1.51 0.7 to 1.9 0.5 to 1.57 0.7 to 1.85
Crop 0.62 to 1 0.51 to 1 0.61 to 1 0.55 to 1 0.59 to 1 0.51 to 1 0.76 to 1 0.59 to 1 0.51 to 1 0.51 to 1
  1. In the table, ‘RotCrp’ and ‘RotScl.’ denote the attacks of rotation with auto-cropping and rotation with auto-cropping and scaling, respectively. The ‘Ok’ has the same meaning as Table 3, and the given values for ‘Scaling’ and ‘Crop’ are ranges of scaling factors and cropping ratios that DMST or DPT can successfully resist, respectively.