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Algorithms for Particle Detection in Complex Plasmas

Mohr, Daniel P. and Knapek, Christina A. and Huber, Peter and Zaehringer, Erich (2019) Algorithms for Particle Detection in Complex Plasmas. Journal of Imaging, 5 (2), p. 30. Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/jimaging5020030 ISSN 2313-433X

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Official URL: http://dx.doi.org/10.3390/jimaging5020030

Abstract

In complex plasmas, the behavior of freely floating micrometer sized particles is studied. The particles can be directly visualized and recorded by digital video cameras. To analyze the dynamics of single particles, reliable algorithms are required to accurately determine their positions to sub-pixel accuracy from the recorded images. Typically, a straightforward algorithm such as the moment method is used for this task. Here, we combine different variations of the moment method with common techniques for image pre- and post-processing (e.g., noise reduction and fitting), and we investigate the impact of the choice of threshold parameters, including an automatic threshold detection, on synthetic data with known attributes. The results quantitatively show that each algorithm and method has its own advantage, often depending on the problem at hand. This knowledge is applicable not only to complex plasmas, but useful for any kind of comparable image-based particle tracking, e.g., in the field of colloids or granular matter.

Item URL in elib:https://elib.dlr.de/127042/
Document Type:Article
Title:Algorithms for Particle Detection in Complex Plasmas
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mohr, Daniel P.daniel.mohr (at) dlr.dehttps://orcid.org/0000-0002-9382-6586
Knapek, Christina A.DLR German Aerospace Center, Research Group Complex Plasmas, Wessling, GermanyUNSPECIFIED
Huber, PeterP.Huber (at) dlr.deUNSPECIFIED
Zaehringer, ErichErich.Zaehringer (at) dlr.dehttps://orcid.org/0000-0003-4718-5447
Date:14 January 2019
Journal or Publication Title:Journal of Imaging
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:No
Volume:5
DOI :10.3390/jimaging5020030
Page Range:p. 30
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Series Name:Special Issue "Image Processing in Soft Condensed Matter"
ISSN:2313-433X
Status:Published
Keywords:image processing; complex plasmas; blob detection; low-pass filter; Hanning amplitude filter; automatic threshold detection; Otsu’s method; image moments; geometric moments; particle tracking velocimetry (PTV)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Komplexe Plasmen / Data analysis
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Mohr, Dr. Daniel P.
Deposited On:03 Apr 2019 11:58
Last Modified:06 Sep 2019 14:49

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