Table 3 Combined summary per BPP for cover–stego and secret–extracted metrics using different secret image sizes with 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 | 61.40 | 1.0000 | 0.0471 | 0.999999 | \(\infty\) | 1.0000 | 15.53 | 8.61 | 262,144 | 26,214 | 25,152 |
64\(\times\)64 | 0.20 | 0.196 | 58.29 | 0.9999 | 0.0964 | 0.999997 | \(\infty\) | 1.0000 | 50.36 | 18.17 | 262,144 | 52,429 | 51,264 |
64\(\times\)64 | 0.40 | 0.383 | 55.34 | 0.9996 | 0.1900 | 0.999994 | \(\infty\) | 1.0000 | 50.85 | 39.38 | 262,144 | 104,858 | 100,416 |
64\(\times\)64 | 1.00 | 0.989 | 51.21 | 0.9972 | 0.4923 | 0.999984 | \(\infty\) | 1.0000 | 135.89 | 113.97 | 262,144 | 262,144 | 259,264 |
128\(\times\)128 | 0.10 | 0.096 | 61.41 | 0.9999 | 0.0470 | 0.999999 | \(\infty\) | 1.0000 | 13.24 | 9.46 | 262,144 | 26,214 | 25,152 |
128\(\times\)128 | 0.20 | 0.196 | 58.30 | 0.9998 | 0.0962 | 0.999997 | \(\infty\) | 1.0000 | 26.37 | 18.38 | 262,144 | 52,429 | 51,264 |
128\(\times\)128 | 0.40 | 0.383 | 55.35 | 0.9996 | 0.1896 | 0.999994 | \(\infty\) | 1.0000 | 56.27 | 39.22 | 262,144 | 104,858 | 100,416 |
128\(\times\)128 | 1.00 | 0.989 | 51.21 | 0.9972 | 0.4916 | 0.999984 | \(\infty\) | 1.0000 | 136.14 | 108.37 | 262,144 | 262,144 | 259,264 |
512\(\times\)512 | 0.10 | 0.096 | 61.39 | 1.0000 | 0.0472 | 0.999998 | \(\infty\) | 1.0000 | 13.04 | 9.40 | 262,144 | 26,214 | 25,152 |
512\(\times\)512 | 0.20 | 0.196 | 58.28 | 0.9999 | 0.0966 | 0.999997 | \(\infty\) | 1.0000 | 26.85 | 18.09 | 262,144 | 52,429 | 51,264 |
512\(\times\)512 | 0.40 | 0.383 | 55.34 | 0.9995 | 0.1900 | 0.999994 | \(\infty\) | 1.0000 | 51.13 | 33.88 | 262,144 | 104,858 | 100,416 |
512\(\times\)512 | 1.00 | 0.989 | 51.20 | 0.9972 | 0.4928 | 0.999984 | \(\infty\) | 1.0000 | 136.14 | 108.37 | 262,144 | 262,144 | 259,264 |
