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Aerial image-based power transmission line detection method

An aerial image and detection method technology, applied in the field of image processing, can solve problems such as time-consuming, poor recognition effect, complicated selection process, etc., and achieve the effect of reducing detection time and fast and effective detection

Active Publication Date: 2017-11-10
STATE GRID ZHEJIANG ELECTRIC POWER +1
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Problems solved by technology

However, the selection process of the parameter threshold is complicated, time-consuming, and the recognition effect is poor in the case of low contrast

Method used

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  • Aerial image-based power transmission line detection method
  • Aerial image-based power transmission line detection method
  • Aerial image-based power transmission line detection method

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Embodiment Construction

[0044] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0045] The invention includes the following stages:

[0046] Image preprocessing stage: After the aerial image is acquired, the Hessian matrix is ​​used to preprocess the image to enhance the linear characteristics of the power line and reduce the background noise.

[0047] Transmission line area segmentation stage: According to the release characteristics of transmission lines, a simplified model of transmission line distribution in aerial images is proposed. Search the image in blocks to get the boundary of the power line area, then divide the aerial image into the power line area and non-power line area, calculate the area segmentation coefficient, and then generate the image's Example of transmission line distribution.

[0048] Transmission line detection stage: use the improved Hough transform to detect aerial images, and add a slope judgment m...

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Abstract

The invention discloses an aerial image-based power transmission line detection method. The method comprises the following steps of firstly obtaining two-dimensional enhanced matrix eigenvalue and eigenvector corresponding to each pixel point by utilizing a Hessian matrix, and according to relationships between eigenvalues and eigenvectors, obtaining edge information of an aerial image; secondly according to a power transmission line distribution characteristic in the aerial image, proposing a simplified aerial image power transmission line distribution model; and performing block segmentation on the aerial image, obtaining a boundary of a power transmission line region, and obtaining a region segmentation coefficient; thirdly detecting a power transmission line by applying a Hough transform detection method to the image; and finally performing judgment by using a line spacing and a power transmission line slope, removing line segments not meeting the requirements, and reserving line segments meeting the requirements as a real power transmission line. The method is high in detection speed and high in detection precision, and can detect real power transmission line information in the aerial image with a complex background; by adopting the method, the problems of long consumed time and slow detection progress are solved; and the detection and identification rate of a power transmission line target in the aerial image is effectively increased.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to an aerial image-based transmission line detection method for region segmentation and improved random Hough transform. Background technique [0002] With the continuous expansion of the national grid investment scale, the network structure is becoming more and more complex, and the workload of grid inspection and maintenance is huge. The traditional manual inspection operation mode of transmission lines and substations can no longer meet the requirements of efficient grid inspection work. To this end, the State Grid Corporation vigorously promotes drone line inspections. Since the aerial image background is a complex and changeable natural background, the detection of power lines directly on the aerial image will result in a high false detection rate and missed detection rate. [0003] In order to reduce the interference of background noise to power line targets, in rece...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/34G06K9/40G06K9/46
CPCG06V20/13G06V10/267G06V10/30G06V10/48
Inventor 张彩友王彦波戴波叶伟静梅峰章振海姚一杨刘雄侯麟毛大鹏邢雅菲吴翔琚小明
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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