elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

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.

[img]
Preview
PDF (Full paper) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
2MB

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.

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 Authors
Staack, KarstenUniversity of Heidelberg
Wereley, StevePurdue University
Garbe, Christoph S.University of Heidelberg
Willert, Christianchris.willert@dlr.de
Date:July 2012
Refereed publication:Yes
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
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Dr.phil. Christian Willert
Deposited On:22 Aug 2012 11:16
Last Modified:12 Dec 2013 21:45

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.