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dc.contributor.author
Detert, Martin
dc.date.accessioned
2021-03-15T07:35:38Z
dc.date.available
2021-03-15T07:13:39Z
dc.date.available
2021-03-15T07:35:38Z
dc.date.issued
2021-02
dc.identifier.issn
0043-1397
dc.identifier.issn
1944-7973
dc.identifier.other
10.1029/2020WR027833
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/474432
dc.description.abstract
Because digital image data acquisition has become low cost and various image analysis tools have become available, the number of image‐based measurement applications is increasing and so is the number of misleading applications. This paper shows how to avoid and correct problematic measurement setups and erroneous analyses by reexamining three recently published data sets on the application of surface image velocimetry to rivers. The results of these data sets were greatly improved by following image velocimetry best practices using intrinsic and extrinsic camera calibration, correcting acquisition frame rates, using appropriate image and velocimetry filters, and reducing bias due to near‐zero velocities. This paper illustrates how to perform more accurate Particle Image Velocimetry analyses and presents results that are in much better agreement with direct field measurements. General recommendations are given to provide guidance to help end users perform image‐based surface flow velocimetry measurements.
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.title
How to Avoid and Correct Biased Riverine Surface Image Velocimetry
en_US
dc.type
Journal Article
ethz.journal.title
Water Resources Research
ethz.journal.volume
57
en_US
ethz.journal.issue
2
en_US
ethz.journal.abbreviated
Water Resour. Res.
ethz.pages.start
e2020WR027833
en_US
ethz.size
17 p.
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Hoboken, NJ
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::03820 - Boes, Robert / Boes, Robert
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::03820 - Boes, Robert / Boes, Robert
en_US
ethz.date.deposited
2021-03-15T07:13:49Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-03-15T07:35:50Z
ethz.rosetta.lastUpdated
2022-03-29T05:45:28Z
ethz.rosetta.versionExported
true
ethz.COinS
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