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A comparison of state-of-the-art image evaluation techniques for analysis of opaque flows

Staack, Karsten and Wereley, Steve and Garbe, Christoph S. and Willert, Christian (2012) A comparison of state-of-the-art image evaluation techniques for analysis of opaque flows. 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 09-12 Jul 2012, Lisbon, Portugal.

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Official URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2012/program.asp

Abstract

In this paper we compare state-of-the-art fluid motion estimation algorithms with respect to the application to opaque flow images, such as Particle Image Velocimetry (PIV), Optical Flow and specialized variants of these. In order to compare the outcome of the algorithms we perform turbulent jet experiments with different Reynolds numbers to generate opaque images with a known average flow field as a reference to estimate the errors. Thereafter the algorithms are used to estimate the velocity of a submerged oil/gas plume that was recorded by an observation camera. We will show that the estimates strongly depend on the choice of algorithm, especially for field test images where cloud-like image structures are the only information to retrieve the motion.

Item URL in elib:https://elib.dlr.de/77087/
Document Type:Conference or Workshop Item (Paper)
Title:A comparison of state-of-the-art image evaluation techniques for analysis of opaque flows
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Staack, KarstenUniversity of HeidelbergUNSPECIFIED
Wereley, StevePurdue UniversityUNSPECIFIED
Garbe, Christoph S.University of HeidelbergUNSPECIFIED
Willert, Christianchris.willert (at) dlr.deUNSPECIFIED
Date:July 2012
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-13
Series Name:Conference Proceedings online
Status:Published
Keywords:particle image velocimetry, PIV, optical flow, image processing, minimum quadratic difference, plume flow, jet flow, visualization, motion estimation
Event Title:16th International Symposium on Applications of Laser Techniques to Fluid Mechanics
Event Location:Lisbon, Portugal
Event Type:international Conference
Event Dates:09-12 Jul 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Willert, Dr.phil. Christian
Deposited On:22 Aug 2012 11:16
Last Modified:31 Jul 2019 19:37

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