Table 1.
Summary of 13 textural features and 8 shape features that represent each ROI
| Category | Descriptor | Dimension |
|---|---|---|
| Textual feature | Histogram | Mean |
| S.D. | ||
| Skewness | ||
| Kurtosis | ||
| Gradient | Mean | |
| S.D. | ||
| Run-length matrix | Short primitive emphasis | |
| Long primitive emphasis | ||
| Co-occurrence matrix | Angular second moment | |
| Contrast | ||
| Correlation | ||
| Inverse difference moment | ||
| Entropy | ||
| Shape feature | Top-hat transform | White top-hat mean |
| White top-hat S.D. | ||
| Black top-hat mean | ||
| Black top-hat S.D. | ||
| Cluster | LAA Area | |
| Number of cluster | ||
| Mean | ||
| S.D. |