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Charged insulator flashover image automatic extracting method and system

An automatic extraction and insulator technology, applied in the field of image processing, can solve the problems of heavy workload, inability to automatically capture and record flashover moments, low accuracy, etc., and achieve the effect of accurate extraction.

Inactive Publication Date: 2016-06-15
BEIJING UNIV OF POSTS & TELECOMM +1
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AI Technical Summary

Problems solved by technology

[0003] The problem with the current technology is that it is impossible to automatically capture and record flashover instant images during the test of insulator flashover characteristics
This method is inefficient, and it is easy to miss the moment of flashover
Real-time video monitoring is used during the live insulator flashover test, which can record the test phenomenon throughout the process. However, it is still necessary for the test personnel to judge the moment of flashover subjectively, manually check and intercept the flashover screen in a very long monitoring video, and the workload is heavy. Large and not very accurate

Method used

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  • Charged insulator flashover image automatic extracting method and system
  • Charged insulator flashover image automatic extracting method and system

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Embodiment Construction

[0037] Embodiments of the present invention are described in detail below. figure 1 is a system block diagram of the present invention, figure 2 Is the method flow of the present invention. Based on the method flow of the present invention, according to the system functional block diagram, the system work includes the following steps:

[0038] (1) The real-time high-definition picture collection of the flashover test of the system captures the flashover test picture of live insulators in a non-contact manner through the network camera. One camera can be placed, or there can be multiple cameras, which are arranged in different positions and taken from different angles Live insulator surfaces. This embodiment illustrates a camera. The technical solution of adopting multiple cameras is also within the scope of protection required by the present invention.

[0039] (2) The real-time high-definition picture acquisition of the flashover test requires that the imaging range of t...

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Abstract

The invention relates to the field of image processing technologies, in particular to automatic extraction of non-contact flashover image pictures in ultra-high-voltage charged insulator flashover tests. The invention specifically discloses a charged insulator flashover image automatic extracting method and a charged insulator flashover image automatic extracting system, and aims to extract flashover pictures automatically, conveniently and accurately from a video sequence for the flashover tests through intelligent analysis of a computer. The method comprises the steps of offline flashover arc image feature analysis, standard flashover image feature automatic clustering, real-time video decoding, key frame extraction, and similarity estimation of features of a flashover image to be detected and feature vectors of a standard flashover image. The system comprises a flashover spark and arc image feature analysis module, a flashover test HD picture acquisition module, a flashover monitoring video decoding key frame extraction module, a to-be-detected flashover image feature set and standard flashover image feature vector similarity calculation module, and a flashover image sequence extraction and display module.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to image feature analysis and key frame image extraction and retrieval methods, and more specifically, to non-contact video monitoring and automatic extraction of flashover images in UHV charged insulator flashover tests. Background technique [0002] Insulator pollution flashover accidents seriously threaten the safe and reliable operation of power systems. In the flashover characteristic test of charged insulators, the analysis and study of the flashover characteristics, mechanism and flashover process of polluted insulators, the conditions for flashover phenomenon, the spark or arc shape when flashover occurs, are of great importance for further research on the characteristics of insulators significance. However, how to record whether a flashover occurs during the test, when it occurs, and the shape of the spark at the moment of flashover are the difficulties faced by t...

Claims

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Application Information

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IPC IPC(8): G06K9/00H04N7/18
CPCH04N7/18G06V20/46
Inventor 别红霞周军邓桃张学军
Owner BEIJING UNIV OF POSTS & TELECOMM
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