FastFeaturePointHistrogram
The Fast Point Feature Histogram (FPFH) by R. B. Rusu et al. (2009) is used to computer for a for an input point cloud with surface normals by following method:
FPFH(pq) = SPFH(pq) +
1 k
k X i=1
1 ωk ·SPFH(pk)
wheretheweightωk representsadistancebetweenthequerypointpq andaneighborpointpk insome given metric space as shown in Figure 2.2.