Gray-Level Normalization Methods
| Method | No. of parameters | Criterion | Reference volume |
|---|---|---|---|
| Max | 1 | Maximum values equality | Whole brain |
| Max-cer | 1 | Maximum values equality | Cerebellum |
| Mean | 1 | Mean values equality | Whole brain |
| Mean-cer | 1 | Mean values equality | Cerebellum |
| Med | 1 | Median values equality | Whole brain |
| Lin-1 | 1 | Least-squares from linear regression | Whole brain |
| DSC-1 | 1 | Number of deterministic sign changes | Whole brain |
| Lin-2 | 2 | Least-squares from linear regression | Whole brain |
| DSC-2 | 2 | Number of deterministic sign changes | Whole brain |