Image type defect detecting method for insulator

A defect detection and insulator technology, applied in image analysis, image data processing, instruments, etc.

Inactive Publication Date: 2014-06-25
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to reduce the influence of different light and complex background on the detection of insulator defects, locate the insulator from the complex background ima

Method used

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  • Image type defect detecting method for insulator
  • Image type defect detecting method for insulator
  • Image type defect detecting method for insulator

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Embodiment Construction

[0051] The present invention will be further described below using the accompanying drawings and examples.

[0052] An insulator image defect detection method of the present invention, such as figure 1 As shown, the specific steps are as follows:

[0053] 1) Read in an insulator image taken aerially by a helicopter inspecting transmission lines, such as figure 2 shown.

[0054] 2) K-means clustering based on Lab color space

[0055] a) Convert the color insulator image of the transmission line acquired by the helicopter inspection from the RGB space to the Lab space. The specific calculation formula is as follows:

[0056] X = 0.4125 R ′ + 0.3576 G ′ + 0.1805 ...

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Abstract

The invention discloses an image type defect detecting method for an insulator. The image type defect detecting method for the insulator comprises the steps that firstly, the insulator is preliminarily separated from a complicated background image in a Lab color space by the adoption of the K mean value clustering algorithm according to the characteristic that the color of the insulator has a clustering property in a colored image; then, the specific location of the insulator is positioned by the adoption of the connected region judgment method based on principal component analysis according to the strip symmetry characteristic, formed in the image, of the insulator; on this basis, a defect area of the insulator is recognized by conducting statistical analysis on the distance between every two adjacent discs of the insulator. The image type defect detecting method for the insulator has the advantages that the influence of different kinds of light and the complicated background to the method is small, the accuracy and robustness of insulator defect detection are improved, and the engineering practical value is quite high.

Description

technical field [0001] The invention relates to an insulator image defect detection method. Background technique [0002] The use of helicopters for inspection of transmission lines has been successfully applied to the operation and maintenance of transmission lines in my country. Since the photography and camera equipment recorded a large amount of transmission line image information during the helicopter inspection process, including the basic characteristics and operating status information of the transmission line, by processing these images, equipment defects and hidden troubles in the transmission line can be found, which can not only overcome Various defects in manual methods can improve work efficiency and detection accuracy, and can improve the automation level of line inspections, reduce inspection personnel, and lay the foundation for the application of unmanned helicopters in power inspections and the intelligence of transmission lines. [0003] The insulator is...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 胡建平谢琪张杰李鹏松
Owner NORTHEAST DIANLI UNIVERSITY
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