Table 1 Results for the image “Pepper” under distinct tampering attacks
From: Quantization-based image authentication scheme using QR error correction
Size (pixels) | Schemes | Authenticated image (dB) | Tampered image (dB) | Recovered image (dB) |
|---|---|---|---|---|
15 × 15 | Yang and Shen’s scheme | 43.13 | 24.92 | 43.00 |
The proposed scheme | 51.09 | 35.19 | 43.99 | |
20 × 20 | Yang and Shen’s scheme | 43.13 | 23.02 | 40.37 |
The proposed scheme | 51.09 | 31.24 | 41.45 | |
25 × 25 | Yang and Shen’s scheme | 43.13 | 21.69 | 39.55 |
The proposed scheme | 51.09 | 26.99 | 39.63 | |
30 × 30 | Yang and Shen’s scheme | 43.13 | 20.65 | 39.20 |
The proposed scheme | 51.09 | 26.80 | 37.53 |