TABLE I.
A List of Selected Features
| Feature Index | Description |
|---|---|
| 1–5 | First eigenvalues of the Hessian matrices at scales σ=1, 3, 6, 9, and 14. |
| 6–10 | Second eigenvalues of the Hessian matrices at scales σ=1, 3, 6, 9, and 14. |
| 11–15 | Third eigenvalues of the Hessian matrices at scales σ=1, 3, 6, 9, and 14. |
| 16–45 | Gaussian filter banks of zero, first, and second orders with derivatives at scales σ=2, 4, and 8. |
| 46–48 | Distances to surfaces 1, 7, and 11. |
| 49–52 | Texture information, including mean intensity, co-occurrence matrix entropy and inertia, and wavelet analysis standard deviation. |