Table 2 Combined summary per BPP for cover–stego and secret–extracted metrics using different secret image sizes without PSO.
From: Optimization-driven steganographic system based on fused maps and blowfish encryption
Secret Size | \(\hbox {BPP}_{{tgt}}\) | \(\hbox {BPP}_{{used}}\) | \(\hbox {PSNR}_{{cs}}\) (dB) | \(\hbox {SSIM}_{{cs}}\) | \(\hbox {MSE}_{{cs}}\) | \(\hbox {IF}_{{cs}}\) | \(\hbox {PSNR}_{{sec}}\) | \(\hbox {SSIM}_{{sec}}\) | \(t_{embed}\) (ms) | \(t_{extract}\) (ms) | Capacity (bits) | Target (bits) | Used (bits) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
64\(\times\)64 | 0.10 | 0.096 | 61.28 | 1.0000 | 0.0484 | 0.999998 | \(\infty\) | 1.0000 | 35.71 | 21.71 | 262,144 | 26,214 | 25,152 |
64\(\times\)64 | 0.20 | 0.196 | 58.22 | 0.9999 | 0.0979 | 0.999997 | \(\infty\) | 1.0000 | 27.76 | 18.16 | 262,144 | 52,429 | 51,264 |
64\(\times\)64 | 0.40 | 0.383 | 55.31 | 0.9996 | 0.1913 | 0.999994 | \(\infty\) | 1.0000 | 51.42 | 33.12 | 262,144 | 104,858 | 100,416 |
64\(\times\)64 | 1.00 | 0.989 | 51.21 | 0.9972 | 0.4918 | 0.999984 | \(\infty\) | 1.0000 | 134.82 | 90.51 | 262,144 | 262,144 | 259,264 |
128\(\times\)128 | 0.10 | 0.096 | 61.32 | 1.0000 | 0.0480 | 0.999998 | \(\infty\) | 1.0000 | 13.05 | 8.70 | 262,144 | 26,214 | 25,152 |
128\(\times\)128 | 0.20 | 0.196 | 58.23 | 0.9999 | 0.0978 | 0.999997 | \(\infty\) | 1.0000 | 26.74 | 17.13 | 262,144 | 52,429 | 51,264 |
128\(\times\)128 | 0.40 | 0.383 | 55.30 | 0.9996 | 0.1918 | 0.999994 | \(\infty\) | 1.0000 | 51.72 | 34.57 | 262,144 | 104,858 | 100,416 |
128\(\times\)128 | 1.00 | 0.989 | 51.19 | 0.9972 | 0.4941 | 0.999984 | \(\infty\) | 1.0000 | 134.60 | 95.23 | 262,144 | 262,144 | 259,264 |
512\(\times\)512 | 0.10 | 0.096 | 61.32 | 1.0000 | 0.0480 | 0.999998 | \(\infty\) | 1.0000 | 30.00 | 19.05 | 262,144 | 26,214 | 25,152 |
512\(\times\)512 | 0.20 | 0.196 | 58.26 | 0.9999 | 0.0971 | 0.999997 | \(\infty\) | 1.0000 | 58.88 | 41.81 | 262,144 | 52,429 | 51,264 |
512\(\times\)512 | 0.40 | 0.383 | 55.30 | 0.9996 | 0.1918 | 0.999994 | \(\infty\) | 1.0000 | 119.05 | 75.70 | 262,144 | 104,858 | 100,416 |
512\(\times\)512 | 1.00 | 0.989 | 51.19 | 0.9972 | 0.4947 | 0.999984 | \(\infty\) | 1.0000 | 302.60 | 195.98 | 262,144 | 262,144 | 259,264 |
