Singularities Of Principal Direction Fields From 3-D Images
Peter T. Sander, Steven W. Zucker · 2005
Generic singularities can provide position-independent information about the qualitative shape of surfaces. The authors determine the singularities of the principal direction fields of a surface (its umbilic points) from a computation of the index of the fields. The authors present examples both for 3-D synthetic images to which noise has been added and for clinical magnetic resonance images. >