Method for detecting coated ice and estimating thickness of coated ice on basis of image

An icing and image technology, applied in the field of icing detection and thickness estimation, can solve problems such as thickness estimation errors

Inactive Publication Date: 2013-11-20
STATE GRID CORP OF CHINA +1
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Problems solved by technology

In addition, considering the spatial displacement of the transmission line due to factors such as gravity, the present invention introduces the step of automatically tracking the movement of the transmission line, and combines the calibration parameters to adaptively estimate the thickness of the ice layer, thereby solving the problem caused by the transmission line due to displacement and perspective. The thickness estimation error of

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  • Method for detecting coated ice and estimating thickness of coated ice on basis of image
  • Method for detecting coated ice and estimating thickness of coated ice on basis of image
  • Method for detecting coated ice and estimating thickness of coated ice on basis of image

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Embodiment Construction

[0063] The present invention will be further described below in conjunction with the embodiments and with reference to the accompanying drawings.

[0064] An image-based ice detection and thickness estimation method, the specific steps are as follows:

[0065] A. Use the installed camera to obtain an image of a power line without ice and snow as a reference image for the system, and extract its edge contour information. And extract its edge contour information. At the same time, according to this information, the average ordinate value of the upper and lower boundary contours of the uniced transmission line in the image is calculated.

[0066] In the extraction of the edge contour information, a Sobel (Sobel) operator is used to perform a convolution operation with the image, and the obtained result is the edge contour map of the image.

[0067] The average ordinate value of the upper and lower boundary contours of the uniced transmission line in the image can be obtained by...

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Abstract

The invention discloses a method for detecting coated ice and estimating the thickness of the coated ice on the basis of an image. The effect of detecting the edge of an ice-coated transmission line with a complex and dark background is optimized by using the priori knowledge of color and position, and the actual ice-coated transmission line thickness is estimated by the thickness estimating algorithm of using a camera to calibrate parameters and the moving target tracking algorithm under the condition that the ice-coated transmission line is displaced. By the method, the problem on detection of the edge in a complex background can be effectively solved, the defect that most algorithms cannot be utilized to estimate the thickness when the ice-coated transmission line is displaced is overcome, and the method for estimating the thickness is more precise than the non-calibration algorithm.

Description

technical field [0001] The present invention relates to an ice detection and thickness estimation method, in particular to an image-based ice detection and thickness estimation method, which detects video images and obtains contour information, and then combines the calibration parameters of the camera itself to analyze and Method to calculate target thickness. This method can be used in the case where some complex backgrounds and objects have large displacements in the video image. Background technique [0002] In the transmission line system, ensuring the safety and reliability of the transmission line is an important task to ensure the stability of the power supply system. Under the ice and snow disaster, excessive snow or rainwater freezes and covers the power transmission line. Under the influence of its gravity, the power transmission line will be broken, resulting in the paralysis of the power supply system. In response to this phenomenon, manual patrol posts are of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G01B11/06
Inventor 钟幼平董越范黎锋黄玮刘凯林巍峣周洋
Owner STATE GRID CORP OF CHINA
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