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Event-Based Imaging Velocimetry - An Assessment Of Event-Based Cameras For The Measurement Of Fluid Flows

Willert, Christian und Klinner, Joachim (2022) Event-Based Imaging Velocimetry - An Assessment Of Event-Based Cameras For The Measurement Of Fluid Flows. 20th International Symposium on Application of Laser and Imaging Techniques to Fluid Mechanics, 2022-07-11 - 2022-07-14, Lisbon, Portugal. ISBN 978-989-53637-0-4.

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Offizielle URL: https://www.lisbonsimposia.org/

Kurzfassung

Event-based vision is a new upcoming field within the field of computer vision. Unlike conventional frame-based imaging, event-based vision (or dynamic vision sensing) asynchronously records binary signals of contrast changes at the pixel level with microsecond resolution. Event-based imaging of small particles illuminated by a laser or other continuous light source generates streaks of events in a space-time domain. From this data the particles' position in both space and time can be inferred. The present work explores the possibilities of harnessing the potentials of event-based vision for fluid flow measurement with focus on two-dimensional, two-component velocity field estimationat particle image densities corresponding to that of conventional PIV. Three different motion detection schemes are implemented. Measurements of a cylinder wake flow demonstrate that EBIV provides time resolved velocity data that is suitable for the retrieval of flow statistics as well as spectral and modal analysis. The present work is an extension of the recently published Exp. Fluids article by the authors on event-based imaging velocimetry (Willert & Klinner, 2022, DOI 10.1007/s00348-022-03441-6) and provides further details on current limitations related to event-based imaging.

elib-URL des Eintrags:https://elib.dlr.de/187568/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Event-Based Imaging Velocimetry - An Assessment Of Event-Based Cameras For The Measurement Of Fluid Flows
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Willert, ChristianChris.Willert (at) dlr.dehttps://orcid.org/0000-0002-1668-0181NICHT SPEZIFIZIERT
Klinner, JoachimJoachim.Klinner (at) dlr.dehttps://orcid.org/0000-0003-2709-9664NICHT SPEZIFIZIERT
Datum:11 Juli 2022
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
ISBN:978-989-53637-0-4
Status:veröffentlicht
Stichwörter:fluid flow measurement, particle imaging, event-based vision sensing, dynamic vision sensor, neuromorphic imaging, high-speed imaging, time-resolved PIV, particle tracking, PTV, proper orthogonal decomposition, SPOD
Veranstaltungstitel:20th International Symposium on Application of Laser and Imaging Techniques to Fluid Mechanics
Veranstaltungsort:Lisbon, Portugal
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:11 Juli 2022
Veranstaltungsende:14 Juli 2022
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Umweltschonender Antrieb
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L CP - Umweltschonender Antrieb
DLR - Teilgebiet (Projekt, Vorhaben):L - Virtuelles Triebwerk
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Antriebstechnik > Triebwerksmesstechnik
Hinterlegt von: Willert, Dr.phil. Christian
Hinterlegt am:15 Aug 2022 15:35
Letzte Änderung:24 Apr 2024 20:48

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