Methods | Noise variance | |||||
---|---|---|---|---|---|---|
 | 15 | 20 | 25 | 30 | 40 | 50 |
Image 1 | Â | |||||
 Noisy image | 83.96 | 76.70 | 71.03 | 60.24 | 53.26 | 44.57 |
 VisuShrink | 84.63 | 65.96 | 66.45 | 53.19 | 55.87 | 36.55 |
 NeighShrink | 73.40 | 76.50 | 74.66 | 71.38 | 62.47 | 58.13 |
 BiShrink | 83.09 | 81.57 | 76.71 | 88.85 | 72.04 | 74.51 |
 Proposed algorithm | 86.53 | 85.57 | 83.61 | 92.80 | 74.93 | 75.78 |
Image 2 | Â | |||||
 Noisy image | 89.28 | 82.84 | 77.25 | 66.08 | 58.24 | 48.22 |
 VisuShrink | 83.87 | 70.32 | 70.47 | 64.97 | 58.80 | 57.56 |
 NeighShrink | 92.52 | 87.06 | 84.67 | 79.73 | 71.56 | 82.86 |
 BiShrink | 91.53 | 88.23 | 88.27 | 75.59 | 83.88 | 82.15 |
 Proposed algorithm | 93.81 | 90.02 | 88.41 | 87.83 | 86.60 | 86.26 |
Image 3 | Â | |||||
 Noisy image | 70.12 | 59.94 | 52.42 | 39.91 | 32.68 | 24.97 |
 VisuShrink | 61.30 | 53.84 | 68.96 | 52.23 | 51.75 | 48.07 |
 NeighShrink | 80.80 | 75.50 | 71.96 | 56.63 | 54.79 | 52.36 |
 BiShrink | 83.92 | 80.93 | 73.37 | 64.72 | 64.55 | 59.46 |
 Proposed algorithm | 84.36 | 84.62 | 77.41 | 69.67 | 74.01 | 68.02 |