Table 1 List of geometric parameters for feature estimation
From: Local shape feature fusion for improved matching, pose estimation and 3D object recognition
Symbol | Description |
|---|---|
\(\mathbf {p}\) | 3D point |
\(\mathbf {n}\) | 3D normal vector |
\(d\) | Euclidean or \(L_2\) distance |
\(r\) | 3D support radius for computing descriptors |
\(\mathcal {N} (\mathbf {p})\) | Set of neighbors in the support of \(\mathbf {p}\) |
\(N =\left| \mathcal {N} (\mathbf {p})\right|\) | Number of neighbors or support size |
\(\mathbf {f}\) | Feature vector or descriptor |