Method for seeking discharge regions of power devices on ultraviolet images

A technology of ultraviolet image and discharge area, which is applied in image enhancement, image analysis, image data processing, etc., can solve problems such as inability to achieve real-time detection, and achieve the effects of improving the correctness of defect diagnosis, easy identification, and improving efficiency

Active Publication Date: 2010-06-09
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO +1
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  • Method for seeking discharge regions of power devices on ultraviolet images
  • Method for seeking discharge regions of power devices on ultraviolet images
  • Method for seeking discharge regions of power devices on ultraviolet images

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Embodiment 1

[0040] This embodiment realizes the detection of the corona area according to the following steps:

[0041] Design a UV image acquisition and diagnosis software. Design a button to control the acquisition and stop of ultraviolet images. First, when the ultraviolet image is collected through the equipment, the ultraviolet image is transmitted to the ultraviolet diagnosis module, and the diagnosis is started.

[0042] First, read the UV image into the module of the software that processes the UV image. Then, preprocess the read image data, including grayscale, noise reduction, and binarization. The binarization refers to the unified color scale expansion of the visible light image superimposed with the ultraviolet image into a normalized image processing, and a unified brightness threshold is used for judgment, and the brightness threshold is selected between 235 and 245 , convert the ultraviolet color image into a brightness image, and use the brightness threshold judgment t...

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Abstract

The invention discloses a method for seeking discharge regions of power devices on ultraviolet images, which comprises the following steps: firstly collecting the ultraviolet images, carrying out pretreatment on the ultraviolet images, further detecting corona regions on the ultraviolet images by treating visible light images stacked together on the collected ultraviolet images, initially detecting the discharge regions, and then removing the interferences of a plurality of backgrounds according to the features of the corona regions for each ultraviolet image; determining whether the devices in the region discharge or not by using a plurality of frames of images for tracking; and the method can simultaneously track a plurality of discharge regions on each image. The method can carry out analysis and diagnosis on the collected images in a real-time on-line manner under the airborne real-time detection requirement in a helicopter patrol inspection system, and determine whether a power transmission line has defects or not; furthermore, the method is characterized by improving the efficiency of line inspection and improving the accuracy of defect diagnosis.

Description

technical field [0001] The invention relates to a method for finding the discharge area of ​​electric equipment on an ultraviolet image. In particular, it relates to a method for tracking the maximum discharge area from continuous multi-frame ultraviolet images, the method can accurately track the target area, and can be applied to real-time on-line detection of high-voltage transmission lines. Background technique [0002] High-voltage power lines are the lifeblood of a country's economy, and it is the basic guarantee for every country's industry and people's lives. Therefore, the maintenance and maintenance of power lines is very important. At present, the maintenance of high-voltage power lines is mainly carried out through manual line inspection, or the collected transmission line images are compared with human eyes to judge the defects of the line. Among various power line inspection methods, the use of helicopters to inspect high-voltage overhead power transmission l...

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Application Information

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IPC IPC(8): G01R31/12G06T5/00G06T7/00
Inventor 张劲陈舫明张扬龚坚刚韩军邱君华
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO
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