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dc.contributor.authorPobitzer, Armineng
dc.contributor.authorPeikert, Ronaldeng
dc.contributor.authorFuchs, Raphaeleng
dc.contributor.authorTheisel, Holgereng
dc.contributor.authorHauser, Helwigeng
dc.date.accessioned2012-06-22T12:13:52Z
dc.date.available2012-06-22T12:13:52Z
dc.date.issued2012eng
dc.identifier.citationTopological Methods in Data Analysis and Visualization II: 237-253en
dc.identifier.urihttp://hdl.handle.net/1956/5860
dc.description.abstractIn many cases, feature detection for flow visualization is structured in two phases: first candidate identification, and then filtering. With this paper, we propose to use the directional information contained in the finite-time Lyapunov exponents (FTLE) computation, in order to filter the FTLE field. In this way we focus on those separation structures that delineate flow compartments which develop into different spatial locations, as compared to those that separate parallel flows of different speed. We provide a discussion of the underlying theory and our related considerations. We derive a new filtering scheme and demonstrate its effect in the context of several selected fluid flow cases, especially in comparison with unfiltered FTLE visualization. Since previous work has provided insight with respect to the studied flow patterns, we are able to provide a discussion of the resulting visible separation structures.en
dc.language.isoengeng
dc.publisherSpringereng
dc.relation.ispartof<a href="http://hdl.handle.net/1956/5856" target="blank">Interactive Visual Analysis of Time-dependent Flows: Physics- and Statistics-based Semantics</a>eng
dc.titleFiltering of FTLE for Visualizing Spatial Separation in Unsteady 3D Floweng
dc.typePeer reviewedeng
dc.typeJournal articleeng
dc.subject.nsiVDP::Mathematics and natural science: 400::Information and communication science: 420::Simulation, visualization, signal processing, image processing: 429eng
dc.rights.holderCopyright Springer-Verlag. All rights reserved.
dc.type.versionupdatedVersioneng
bora.peerreviewedPeer reviewedeng
bibo.doihttp://dx.doi.org/10.1007/978-3-642-23175-9_16eng
dc.identifier.doihttp://dx.doi.org/10.1007/978-3-642-23175-9_16
dcterms.isPartOfhttp://hdl.handle.net/1956/5856


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