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Erschienen in: Experiments in Fluids 4/2005

01.04.2005 | Originals

Two-dimensional Gaussian regression for sub-pixel displacement estimation in particle image velocimetry or particle position estimation in particle tracking velocimetry

verfasst von: H. Nobach, M. Honkanen

Erschienen in: Experiments in Fluids | Ausgabe 4/2005

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Abstract

An explicit solution of two-dimensional Gaussian regression for the estimation of particle displacement from the correlation function in particle image velocimetry (PIV) or particle position from the images in particle tracking velocimetry (PTV) with sub-pixel accuracy is introduced. The accuracy and the ability of the methods to avoid pixel locking due to non-axially orientated, elliptically shaped particle images or correlation peaks are investigated using simulated and experimentally obtained images.

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Metadaten
Titel
Two-dimensional Gaussian regression for sub-pixel displacement estimation in particle image velocimetry or particle position estimation in particle tracking velocimetry
verfasst von
H. Nobach
M. Honkanen
Publikationsdatum
01.04.2005
Erschienen in
Experiments in Fluids / Ausgabe 4/2005
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-005-0942-3

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