Research Article
A Unified Framework for Brain Segmentation in MR Images
Table 1
The Kappa index for the 18 volumes on the BrainWeb database with different Rician noise levels and 20% inhomogeneity.
| Methods | White matter (%) | Grey matter (%) | Noise level | 0 | 1 | 5 | 7 | 9 | 0 | 1 | 3 | 5 | 7 | 9 |
| EM | 86.1 | 91.5 | 92.2 | 90.1 | 86.4 | 83.1 | 90.8 | 92.5 | 92 | 89.1 | 84.2 | SPM 5 | 91.05 | 94.2 | 93.6 | 90.2 | 86.3 | 91.2 | 93.4 | 93.3 | 92.1 | 90 | 86.6 | HMC | 97.8 | 97.7 | 93.9 | 92.3 | 91.7 | 97 | 96.5 | 95.1 | 93.7 | 91.6 | 90.3 | Fast | 97.4 | 96.8 | 94.8 | 94.3 | 91.9 | 96 | 95.8 | 95.3 | 93.8 | 91.5 | 91.1 | FCM | 97 | 96 | 92 | 88 | 84 | 97 | 96 | 94 | 91 | 87 | 83 | NL-FCM | 95.6 | 94.2 | 91.5 | 89.8 | 83.2 | 95.4 | 94.1 | 93.8 | 92.9 | 89.9 | 79.3 | Proposed method | 97 | 95 | 94.9 | 94.4 | 92.2 | 95.9 | 95.7 | 95.3 | 93.8 | 92.1 | 91.2 |
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