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Rapid image-recognizing method of power line profile

An image recognition and power line technology, applied in character and pattern recognition, overhead line/cable equipment, instruments, etc., can solve problems such as line interruption, rare power line image recognition methods, and Italian blackouts, etc., and achieve good application prospects.

Active Publication Date: 2010-01-13
STATE GRID ZHEJIANG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In August 2003, a large-scale power outage in the United States and Canada was caused by the failure to trim branches near the power line and fault handling. In September 2003, a power outage in most parts of the country in Italy The incident was also caused by the fact that a large tree in Switzerland was blown down by the wind and hit the high-voltage power line leading to Italy, causing the line to be interrupted and causing a major power outage in Italy that day. The growth of trees in the interior has great potential safety hazards for the safety of power grid transmission lines
[0009] At present, the research on power line image recognition methods is rare at home and abroad. Through comprehensive analysis of the characteristics of power line targets in images, finding a pattern recognition algorithm that can quickly identify power line targets in images has become the key research content of the present invention.

Method used

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  • Rapid image-recognizing method of power line profile
  • Rapid image-recognizing method of power line profile
  • Rapid image-recognizing method of power line profile

Examples

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Embodiment 1

[0039] The power line image recognition method proposed by the present invention is developed according to the image characteristics of the power line, and the algorithm flow chart is shown in figure 1 . The details are as follows:

[0040] (1) Image reading, grayscale and edge contour extraction

[0041] The power line identification method is developed based on the Visual C++ platform, figure 2 It is the interface diagram of the console to run the program, where the base class of the image package is CImage. CImage is a DIB image encapsulation class library developed by Microsoft, and it is also a base class often used in image processing. The source image that embodiment 1 collects sees image 3 shown.

[0042] For a color image pixel with three components of R, G, and B, the brightness of the point is calculated according to the following formula:

[0043] I=0.3B+0.59G+0.11R (1)

[0044] Convert the color image to grayscale image according to formula (1). image 3...

Embodiment 2

[0081] The power line image recognition method proposed by the present invention is developed according to the image characteristics of the power line, and the algorithm flow chart is shown in figure 1 . The details are as follows:

[0082] (1) Image reading, grayscale and edge contour extraction

[0083] The power line identification method is developed based on the Visual C++ platform, figure 2 It is the interface diagram of the console to run the program, where the base class of the image package is CImage. The reading and processing of the image is realized by the functions encapsulated in CImage. CImage is a DIB image encapsulation class library developed by Microsoft, and it is also a base class often used in image processing. The source image that embodiment 2 gathers sees Figure 5 shown. For a color image pixel with three components of R, G, and B, the brightness of the point is calculated according to the following formula:

[0084] I=0.3B+0.59G+0.11R (1)

...

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Abstract

The invention discloses a rapid image-recognizing method of a power line profile. The method comprises the following steps: (1) conversing a shot color image into a grey image by brightness calculation and extracting the border profile of the image; (2) adopting an improved probability Hough transformation method to make self-adaptive adjustment of a line segment length and a statistics number obtained from the image in a known region; (3) adopting fitting of a line and a direction template for the two-dimensional fitting of a direction pixel template and a distance pixel template with linear characteristics and realizing linear fitting by deriving sumi rho(ri); and (4) calibrating and outputting power line pixels by storing and displaying the finally detected and calibrated linear pixels in a polar coordinate mode or a rectangular coordinate mode. Aiming at the concrete requirements of helicopters or robots for inspecting transmission lines, the invention precisely extracts the transmission lines in real time, provides a solid foundation for the subsequent zoom-in shooting of a camera and the defect detection of parts hereafter and has favorable theoretical and application prospects.

Description

technical field [0001] The invention relates to a fast image recognition method of electric power line contour. Background technique [0002] For a long time, most of the work of installation, operation, maintenance and overhaul of transmission lines in my country has been mainly done by manpower, and the level of mechanization is far behind the international advanced level. With the emergence of high-voltage, high-power, and long-distance transmission lines, the transmission lines are getting farther and farther away from cities and main traffic roads, making their construction, operation and maintenance more and more difficult. The development of modern aviation industry and automation technology provides new technical methods and means for the construction and operation and maintenance of transmission lines. Automated inspection of areas that are difficult to reach by manpower by means of helicopters or robots has become a research hotspot in the field of power line insp...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46H02G1/02
Inventor 张亮黄宵宁盛晔宋伟光张弛陈舫明
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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