Separatrix Persistence: Extraction of Salient Edges on Surfaces Using Topological Methods
2009 (English)In: Computer graphics forum (Print), ISSN 0167-7055, E-ISSN 1467-8659, Vol. 28, no 5, 1519-1528 p.Article in journal (Refereed) PublishedText
Salient edges are perceptually prominent features of a surface. Most previous extraction schemes utilize the notion of ridges and valleys for their detection, thereby requiring curvature derivatives which are rather sensitive to noise. We introduce a novel method for salient edge extraction which does not depend on curvature derivatives. It is based on a topological analysis of the principal curvatures and salient edges of the surface are identified as parts of separatrices of the topological skeleton. Previous topological approaches obtain results including non-salient edges due to inherent properties of the underlying algorithms. We extend the profound theory by introducing the novel concept of separatrix persistence, which is a smooth measure along a separatrix and allows to keep its most salient parts only. We compare our results with other methods for salient edge extraction.
Place, publisher, year, edition, pages
2009. Vol. 28, no 5, 1519-1528 p.
feature extraction, topology
Research subject Computer Science; SRA - E-Science (SeRC)
IdentifiersURN: urn:nbn:se:kth:diva-184777DOI: 10.1111/j.1467-8659.2009.01528.xISI: 000268597500027ScopusID: 2-s2.0-70049111763OAI: oai:DiVA.org:kth-184777DiVA: diva2:916783
7th Eurographics Symposium on Geometry Processing (SGP), July 15-17, 2009, Berlin Germany
QC 201604052016-04-042016-04-042016-04-05Bibliographically approved