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doi:10.22028/D291-26359
Titel: | A general structure tensor concept and coherence-enhancing diffusion filtering for matrix fields |
VerfasserIn: | Burgeth, Bernhard Didas, Stephan Weickert, Joachim |
Sprache: | Englisch |
Erscheinungsjahr: | 2007 |
Freie Schlagwörter: | matrix field symmetric matrix diffusion tensor MRI CED structure tensor |
DDC-Sachgruppe: | 510 Mathematik |
Dokumenttyp: | Sonstiges |
Abstract: | Coherence-enhancing diffusion filtering is a striking application of the structure tensor concept in image processing. The technique deals with the problem of completion of interrupted lines and enhancement of flow-like features in images. The completion of line-like structures is also a major concern in diffusion tensor magnetic resonance imaging (DT-MRI). This medical image acquisition technique outputs a 3D matrix field of symmetric 3×3-matrices, and it helps to visualise, for example, the nerve fibers in brain tissue. As any physical measurement DT-MRI is subjected to errors causing faulty representations of the tissue corrupted by noise and with visually interrupted lines or fibers. In this paper we address that problem by proposing a coherence-enhancing diffusion filtering methodology for matrix fields. The approach is based on a generic structure tensor concept for matrix fields that relies on the operator-algebraic properties of symmetric matrices, rather than their channel-wise treatment of earlier proposals. Numerical experiments with artificial and real DT-MRI data confirm the gap-closing and flow-enhancing qualities of the technique presented. |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291-scidok-47275 hdl:20.500.11880/26415 http://dx.doi.org/10.22028/D291-26359 |
Schriftenreihe: | Preprint / Fachrichtung Mathematik, Universität des Saarlandes |
Band: | 197 |
Datum des Eintrags: | 20-Mär-2012 |
Fakultät: | MI - Fakultät für Mathematik und Informatik |
Fachrichtung: | MI - Mathematik |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
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preprint_197_07.pdf | 1,49 MB | Adobe PDF | Öffnen/Anzeigen |
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