Research Article
A MRI Denoising Method Based on 3D Nonlocal Means and Multidimensional PCA
Table 1
The comparison of denoising methods with different noise levels on T1 weighted MRI Images.
| Denoising method | 3% Rician noise | 4% Rician noise | 5% Rician noise | SNR | PSNR | SSIM | SNR | PSNR | SSIM | SNR | PSNR | SSIM |
| 3D-ADF | 13.7207 | 25.4512 | 0.7642 | 12.9584 | 25.4144 | 0.7624 | 12.1337 | 25.3515 | 0.7604 | OMNLM_LAPCA | 18.5248 | 35.0833 | 0.9495 | 16.0899 | 33.2808 | 0.9234 | 14.1684 | 31.7119 | 0.8927 | NLM3D | 25.9919 | 37.5705 | 0.976 | 24.0109 | 35.9133 | 0.965 | 20.8779 | 34.5518 | 0.9472 | Proposed | 27.0346 | 38.5828 | 0.9864 | 25.0351 | 36.924 | 0.9755 | 22.9218 | 35.5598 | 0.9555 |
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