Figure 11

Probability of good detection versus average PSNR of attacked images for the four watermarking techniques: proportional embedding and new robustness criterion “,” additive embedding and new robustness criterion “+,” proportional embedding and Miller, Cox & Bloom robustness criterion “” [6, Section 5. 1.3], proportion embedding with Comesaña's strategy “” [7]. Selection of attacks: (1) denoise threshold 20, (2) denoise threshold 30, (3) JPEG , (4) JPEG2000 , (5) JPEG2000 , (6) JPEG2000 , (7) scale , (8) scale , (9) scale , (10) scale , (11) scale , (12) scale , (13) scale , (14) scale , (15) no attack.