Table 4 Mean error value comparison between AIVC and the proposed method for various demosaicing methods and centered blocks with a shifted angle of 45°
From: Wavelet-based color modification detection based on variance ratio
Demosaicing method | Shifted hue degree | 32 × 32 | 64 × 64 | 128 × 128 | 256 × 256 | 512 × 512 |
|---|---|---|---|---|---|---|
Bilinear | AIVC | 5.37 | 2.45 | 0.79 | 0.27 | 0.13 |
Proposed | 2.97 | 2.01 | 1.55 | 1.26 | 1.29 | |
AHD | AIVC | 31.50 | 23.18 | 19.90 | 17.42 | 15.03 |
Proposed | 14.07 | 9.03 | 7.30 | 6.38 | 5.68 | |
AMaZE | AIVC | 33.65 | 26.18 | 23.22 | 21.51 | 17.68 |
Proposed | 21.19 | 15.12 | 13.50 | 11.00 | 9.85 | |
DCB | AIVC | 36.26 | 35.96 | 35.72 | 34.26 | 33.14 |
Proposed | 11.17 | 6.90 | 4.40 | 2.85 | 1.58 | |
LMMSE | AIVC | 34.81 | 24.76 | 19.42 | 15.60 | 12.68 |
Proposed | 34.13 | 22.40 | 16.17 | 13.51 | 11.84 | |
VNG | AIVC | 19.28 | 14.98 | 12.18 | 10.71 | 10.44 |
Proposed | 9.71 | 7.62 | 6.49 | 4.95 | 5.21 | |
HPHD | AIVC | 48.95 | 41.66 | 36.01 | 31.55 | 28.39 |
Proposed | 36.86 | 26.35 | 22.07 | 21.87 | 20.39 | |
Average | AIVC | 29.97 | 24.17 | 21.04 | 18.76 | 16.81 |
Proposed | 18.59 | 12.78 | 10.21 | 8.83 | 7.98 |