Table 2 PSNR values for various Rician noise levels
From: Rician nonlocal means denoising for MR images using nonparametric principal component analysis
|  | σ = 10 | σ= 20 | σ= 30 | σ = 40 |
|---|---|---|---|---|
Brain image | Â | Â | Â | Â |
NLM | 32.62 | 27.39 | 23.26 | 20.10 |
PCA-NLM | 32.64 | 27.29 | 23.61 | 20.47 |
NPCA-NLM | 32.84 | 27.63 | 23.65 | 20.48 |
Body image | Â | Â | Â | Â |
NLM | 31.94 | 25.07 | 20.78 | 17.80 |
PCA-NLM | 31.94 | 25.13 | 20.93 | 17.87 |
NPCA-NLM | 32.08 | 25.08 | 20.94 | 17.96 |
Knee image | Â | Â | Â | Â |
NLM | 31.80 | 27.99 | 24.43 | 21.43 |
PCA-NLM | 32.13 | 28.17 | 24.66 | 21.82 |
NPCA-NLM | 32.31 | 28.25 | 24.62 | 21.86 |