Table 1 Approximate PSNR value of the watermarked image under different number of the LSB
Number of LSB | α = 1 | α = 2 | α = 3 | α = 4 | α = 5 |
|---|---|---|---|---|---|
E d | 0.5 | 2.5 | 10.5 | 42.5 | 170.5 |
PSNR | 51.14 | 44.15 | 37.92 | 31.85 | 25.81 |
Number of LSB | α = 1 | α = 2 | α = 3 | α = 4 | α = 5 |
|---|---|---|---|---|---|
E d | 0.5 | 2.5 | 10.5 | 42.5 | 170.5 |
PSNR | 51.14 | 44.15 | 37.92 | 31.85 | 25.81 |