Table 2 Image quality of method 2 (two-level progressive sharing)
From: Progressive sharing of multiple images with sensitivity-controlled decoding
Secret images | Progressive thresholds ( r j1 & r j2 ) | Image quality of recovery on level 1 | Image quality of recovery on level 2 | Quality of stego images | |||||
|---|---|---|---|---|---|---|---|---|---|
PSNR | SSIM | MSE | Stego images | PSNR | SSIM | MSE | |||
House | 3&4 | 30.71 | 0.883 | 55.17 | Lossless | Barbara | 43.75 | 0.980 | 2.73 |
Cameraman | 3&4 | 28.21 | 0.866 | 98.18 | Lossless | Lake | 44.17 | 0.979 | 2.48 |
Lena | 4&5 | 29.63 | 0.871 | 70.80 | Lossless | Couple | 42.10 | 0.978 | 4.00 |
Pepper | 4&5 | 29.97 | 0.891 | 65.43 | Lossless | Baboon | 42.31 | 0.985 | 3.81 |
Jet | 5&6 | 28.55 | 0.883 | 90.70 | Lossless | Indian | 41.29 | 0.975 | 4.82 |
Blonde | 5&6 | 30.33 | 0.870 | 60.18 | Lossless | Bridge | 39.26 | 0.981 | 7.69 |