This document describes the iterative skeletonisation process as implemented in 'dm', and in particular the things you need to know in order to use the process. The construction of a 'skeleton' representing the connectivity of the map. The creation of a new map from the skeleton. Construction of the Skeleton First, the map is searched to locate the important features.
Peaks are local maxima in the density.
A ridge is the highest path joining two peaks. A join point is the lowest point on a ridge, i.e. the lowest point on the highest path joining two peaks. The join point cutoff. Any ridge whose join point falls above this level will be included in the skeleton. Ridges whose join points fall beneath this level will not be included in full, but a part of the ridge may be included as an end.