University of Konstanz
Graduiertenkolleg / PhD Program
Computer and Information Science

Guest Talks

title

Spectral methods for non-rigid shape analysis

speaker

Dr. Martin Reuter, Department of Mechanical Engineering, MIT
Cambridge, Massachusetts, USA

date & place

Wednesday, 19.12.2007, 16:15 h
Room C252

abstract

This talk will give an overview on non-rigid shape analysis using the Laplace-Beltrami Spectrum as a signature/shape-descriptor (the shape-DNA) that can be used to compare shape in any dimension invariant of the location and optionally of the size of an object. The (possibly normed) beginning sequence of the spectrum of the Laplace-Beltrami operator has many nice properties, that make it optimally suited to be used as a signature, eliminating the necessity to register or align objects for the comparison process. At an example of a database of non-rigid shapes (humans and animals in different body postures) it will be shown that the shape-DNA has the ability to cluster groups nicely. This shape descriptor has also been used successfully to pickup statistically significant differences in the shape of human brain structures (cuadate nucleus) for medical research on Schizotypal Personality Disorder.