High voltage transmission line detection method based on linear targets

A technology of high-voltage transmission lines and detection methods, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., to meet the requirements of drone inspections, fast detection speed, and high detection accuracy

Inactive Publication Date: 2014-05-21
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI +1
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Problems solved by technology

[0010] In order to solve the above problems, the object of the present invention is to propose an accurate and real-time high-voltage transmission line detection method bas

Method used

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  • High voltage transmission line detection method based on linear targets
  • High voltage transmission line detection method based on linear targets
  • High voltage transmission line detection method based on linear targets

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Embodiment Construction

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0048] Flowchart such as figure 1 As shown, the present invention uses the Hessian matrix for the detection method of the high-voltage transmission line. The Hessian matrix (Hessian matrix or Hessian), also known as the Hessian matrix, is a square matrix composed of the second-order partial derivatives of a real-valued function whose independent variable is a vector.

[0049] The specific implementation steps are as follows:

[0050] (1) Calculate the gradient vector and Hessian matrix of each pixel in the image

[0051] If the image L(x,y) is regarded as a three-dimensional surface composed of two-dimensional coordinates of pixels and their corresponding gray values, the coordinates of the three-dimensional surface can be expressed as:

[0052] C={(x,y,L)|L=L(x,y)}

[0053] Where (x, y) is the pixel position coordinates, L(x, y) is the gr...

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Abstract

The invention relates to a high voltage transmission line detection method based on linear targets. The high voltage transmission line detection method based on the linear targets comprises the following steps of firstly obtaining a Hessian matrix feature vector direction which is corresponding to every pixel point through a Hessian matrix and enabling the direction to be the direction of the linear target which is formed by the point; extracting points which are approximate to the Hessian matrix feature vector direction through a region growing method to form into small line segments (the linear targets); performing small line segment statistic through a statistical method to obtain a slope K and an intercept B of a power transmission line approximate fitting linear equation and confirming the approximate fitting linear equation of the power transmission line; connecting the small line segments nearby the approximate fitting linear equation and obtaining an accurate position of the high voltage transmission line. The high voltage transmission line detection method based on the linear targets has the advantages of being rapid in detection speed and high in detection accuracy, solving the technical problem of routing inspection of the high voltage transmission line through an unmanned aerial vehicle under complicated background and satisfying the routing inspection requirement of the unmanned aerial vehicle due to the fact that the Hessian matrix is used for detecting of the high voltage transmission line.

Description

technical field [0001] The invention relates to image processing, pattern recognition and automatic target recognition technologies, specifically to use image processing technology to detect and recognize high-voltage transmission lines, and belongs to the field of linear target recognition. Background technique [0002] The integrity of the power line is the premise of transmitting electric energy and ensuring the safe use of electricity, so ensuring the integrity of the power line is a very important task, and the inspection of the power line is especially necessary. The traditional power line inspection process is that the staff go to the site to inspect the line in person. Therefore, patrol inspection is affected by too many human factors, which will endanger the lives of patrol workers in dangerous areas, and the amount of manual data entry is large, and errors are prone to errors during the manual data entry process. UAV is an unmanned aerial vehicle operated by radio...

Claims

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Application Information

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IPC IPC(8): G06K9/00
Inventor 李文涛唐延东丛杨范慧杰刘刚夏泳杜科王玲
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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