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Table 1 Comparing BER (%) of LQIM [20], Zareian’s method [16], and our method under different types of attacks, (Message length = 192 bits, MSSIM=0.9939)

From: Optimal watermark embedding combining spread spectrum and quantization

Method VSA (ρ) GLPF Med. JPEG (QF) AWGN (σ n ) S&P (p s ) Blu. (l) His. Log.
  0.8 1.3 3×3 5×5 10 16 22 10 16 22 2.5 % 2 4   
LQIM 0.3 4.2 3.7 39.6 0.7 0.1 0.0 5.9 10.9 19.6 22.3 0.0 15.2 45.3 23.4
Zareian’s 4.3 4.0 13.7 35.7 29.3 20.4 15.9 17.8 26.6 33.4 34.9 8.6 22.4 31.4 11.9
Ours 0.5 7.6 1.1 21.3 4.6 0.4 0.1 0.1 1.3 9.8 8.4 0.0 5.0 29.9 8.7