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Fixed wing unmanned aerial vehicle touring image accurately-splicing method for power transmission line

A transmission line and transmission line technology, applied in image enhancement, image data processing, graphic image conversion, etc., can solve the problems of high splicing accuracy requirements, unnatural wire orientation, and poor wire connection, so as to achieve complete and clear display. , Avoid wire breakage and breakage, and ensure the effect of accuracy

Active Publication Date: 2015-03-11
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID +1
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Problems solved by technology

[0004] Fixed-wing UAV inspection images require high splicing accuracy, and wire splicing is one of the key technical points. Due to the limitations of existing technologies, the existing surveying and mapping stitching technology is used to stitch fixed-wing UAV inspection images of transmission lines. There will be obvious misalignment problems, and the phenomenon that the wires cannot be connected and the wires are unnatural

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  • Fixed wing unmanned aerial vehicle touring image accurately-splicing method for power transmission line

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Embodiment

[0064] Fixed-wing UAV inspection images for the power industry have high requirements for image stitching technology. The main difficulty lies in the phenomenon that the wires will be misplaced and not connected properly during splicing. The present invention can be mainly divided into four parts: data preparation, power line extraction, image matching and splicing, image registration and fusion.

[0065] The invention aims at the deficiency of only using the edge information of the image in the traditional transmission line extraction technology, and extracts the texture feature in the image through the anisotropic curvelet transform, and realizes the estimation of the distribution area of ​​the transmission line. Then, according to the double-line feature of the transmission line in the high-resolution image, further screening of the extracted transmission line is realized, and high-accuracy and high-robust transmission line extraction is completed.

[0066] On the basis of ...

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Abstract

The invention discloses a fixed wing unmanned aerial vehicle touring image accurately-splicing method for a power transmission line. The accurately-splicing method includes the following steps: (1) conducting data preparation and sample training; (2) conducting feature extraction on the power transmission line based on textural features and straight line features to obtain a power transmission line distributing area and power transmission line extraction data, screening the power transmission line extraction data through the power transmission line distributing area, and obtaining power transmission line extracting results through power transmission line double-edge features; (3) conducting SIFT image registration and fusing based on power transmission line customization on the power transmission line extracting results. According to the fixed wing unmanned aerial vehicle touring image accurately-splicing method, curvelet transformation is adopted for achieving extraction on power transmission line texture information and detection on power transmission line distribution, and the power transmission line double-edge features in high-resolution unmanned aerial vehicle images are further adopted for obtaining the reliable and accurate power transmission line extracting results.

Description

technical field [0001] The invention relates to an image splicing method, in particular to a method for precise splicing of inspection images of a fixed-wing unmanned aerial vehicle on a power transmission line. Background technique [0002] The existing fixed-wing UAV inspection image stitching technology is mainly used in surveying and mapping, and many stitching methods are used. The main problems in the field include low stitching accuracy and slow stitching speed. [0003] There is currently no application in mosaic of fixed-wing UAV inspection images, and there are no relevant domestic reports. Only by mosaicing the inspection sequence images of fixed-wing UAVs on transmission lines to form a complete panoramic image of transmission line corridors can provide intuitive and accurate power transmission Lines, especially corridor information, fixed-wing UAVs fly at a high altitude, and the flight height to the ground generally reaches 300-500m. High-precision stitching r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50G06T3/40
Inventor 毛强杨鹤猛陈艳芳李庭坚徐云鹏李翔余德泉张建刚陈欢张拯宁赵恩伟莫兵兵王昕
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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