Visual evaluation of the length of artificially generated electrical discharges by 3D-snakes

Visual evaluation of the length of artificially generated electrical discharges by 3D-snakes

The secondary arc extinction is the main concern in single-phase auto reclosure (SPAR) switching studies, since it dictates whether the reclosure will be successful or not. In this context, a function that describes the arc length variation over time (l(t)) is an important information not only for d...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation Vol. 18; no. 1; pp. 200 - 210
Main Authors: Santos, Gilmário B, Tozzi, Clésio L, Tavares, Maria C
Format: Journal Article
Language:English
Published: New York IEEE 01-02-2011
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Arc discharges
Automotive engineering
computer aided analysis
Discharges
Equations
Force
Image analysis
image processing
machine vision
Mathematical analysis
Mathematical model
Mathematical models
modeling
Proposals
Spline
Three dimensional
Three dimensional displays
Time dependence
Tracking
Visualization
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Summary:The secondary arc extinction is the main concern in single-phase auto reclosure (SPAR) switching studies, since it dictates whether the reclosure will be successful or not. In this context, a function that describes the arc length variation over time (l(t)) is an important information not only for dynamic response but also for the analysis of transient arc processes. Given that purely electrotechnical approach only gives a profile of the curve l(t), the application of techniques based on image analysis has been considered for obtaining such function. In this paper, a new approach based on 3D-reconstruction and the tracking of an electrical arc is proposed for performing a computer-based evaluation of variations in its length. It was applied a three-dimensional active contour named 3D-snake that is geometrically represented by a B-spline, which evolves in 3D space. This new model is much less dependent on the determination of homologous points than the ad hoc approaches found in the literature for recovering 3D geometry of electrical discharges based on image analysis. In addition, the proposal presented is capable of tracking the evolution of the electrical discharge taking into account the time dependence between consecutive pairs of frames in two videos providing the required function l(t).
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2011.5704511