Skip to main content

Table 7 The quality of extracted watermark from Lena image () with watermark size (Figure 11(b)) versus several attacks in different methods.

From: A New Robust Watermarking Scheme to Increase Image Security

Attack type

Watermarked image PSNR

of extracted watermark

  

Mohanty method [24]

Asatryan method [27]

Proposed method

No Attack

48.27 dB

0.9975

0.9988

0.9975

AF() + JP(50)

29.49 dB

0.6533

0.6898

0.7008

S(1/2) + B(3) + JP(60)

28.91 dB

0.5611

0.5709

0.5770

SH(1) + MF()

29.25 dB

0.5753

0.7128

0.6389

MF() + S(1/2) + JP(60)

30.25 dB

0.5901

0.4866

0.7178

GN(0,0.002) + MF() + JP(50)

30.03 dB

0.4569

0.5684

0.5360

GL() + CAR(1,1.2) + JP(50)

26.38 dB

0.7072

0.6079

0.8984

WF() + B(2) + JP(40)

31.20 dB

0.5310

0.6404

0.6696

B(2) + GN(0,0.002) + JP(50)

29.38 dB

0.4085

0.4402

0.5535

C(40%)

18.01 dB

0.1708

0.3508

0.4506

S(1/4) + JP(40)

28.59 dB

0.4598

0.2222

0.6341