High-voltage transmission line corridor three-dimensional reconstruction method based on Cesium three-dimensional earth framework

A high-voltage transmission line, three-dimensional earth technology, applied in the field of three-dimensional reconstruction, can solve problems such as low reconstruction accuracy

Active Publication Date: 2021-07-30
ANHUI WANBEI COAL REFCO GRP LTD HANSHAN HENGTAI NONMETALLIC MATERIALS BRANCH +2
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Problems solved by technology

[0004] However, the reconstruction accuracy of the above method is low, and it is usually difficult to carry out accurate and effect

Method used

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  • High-voltage transmission line corridor three-dimensional reconstruction method based on Cesium three-dimensional earth framework
  • High-voltage transmission line corridor three-dimensional reconstruction method based on Cesium three-dimensional earth framework
  • High-voltage transmission line corridor three-dimensional reconstruction method based on Cesium three-dimensional earth framework

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Example Embodiment

[0069] Embodiment:

[0070] This embodiment proposes a three-dimensional reconstruction method based on a high voltage transmission line corridor based on a Cesium three-dimensional earth frame. Form figure 1 As shown, including the following steps:

[0071] (1) Get the target area low-altitude tilt multi-view stereoscopic image data, using the SFM algorithm for the air triangle analysis of the low-altitude tilting multi-view stereoscopic image data; the real three-dimensional model and real shot image of the target area is generated based on the analysis result;

[0072] (2) Construction of the Cesium 3D Earth Scene, load the real three-dimensional model into the 3D Earth scene, complete the reconstruction of the high-voltage transmission line corridor terrain scene;

[0073] (3) Constructing a three-dimensional model library of a rod tower and an insulator three-dimensional model library; according to the three-dimensional model of each rod tower, the tower template image is ext...

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Abstract

The invention provides a high-voltage transmission line corridor three-dimensional reconstruction method based on a Cesium three-dimensional earth framework; the method comprises the steps: firstly obtaining a live-action three-dimensional model and a true shoot image of a high-voltage transmission line corridor region through employing an oblique photogrammetry technology, then building a Cesium three-dimensional earth scene, and completing the loading of the live-action three-dimensional model; based on a tower two-dimensional template image library and a corresponding three-dimensional model library, carrying out template matching on a TDOM to carry out recognition and rough positioning on a tower, and then loading a corresponding tower three-dimensional model in a Cesium three-dimensional earth scene and carrying out interactive correction; extracting parameter information of an insulator on a tower, loading and displaying the parameter information based on a Cetium frame, and completing three-dimensional drawing of a power line in the Cetium frame according to coordinates of same-name line hanging points of two end points of the insulator and in combination with an overhead line catenary equation; and finally, carrying out correction processing on the live-action three-dimensional model. The invention provides a high-voltage power tower line corridor three-dimensional reconstruction scheme with relatively high automation level and precision.

Description

technical field [0001] The invention relates to the technical field of three-dimensional reconstruction, in particular to a method for three-dimensional reconstruction of high-voltage transmission line corridors based on a Cesium three-dimensional earth frame. Background technique [0002] The 3D reconstruction of high-voltage power line corridor can provide important information for line inspection and provide important data support for smart grid construction. At present, the three-dimensional reconstruction methods of power line corridors mainly include two technical means: on-board Lidar (Lidar) and photogrammetry. Lidar is a surveying and mapping device that can obtain 3D information on the ground efficiently and with high precision through high-frequency laser ranging. However, it has not been widely used in 3D reconstruction of transmission lines due to limited equipment prices and high flight costs. Applications. In recent years, there have been lidar products moun...

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Application Information

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IPC IPC(8): G06T17/05G06K9/46G06K9/62G06T15/20G06T15/04G06T7/73
CPCG06T17/05G06T15/04G06T15/205G06T7/73G06T2207/10028G06V10/462G06V10/751
Inventor 毕卫华房龙岩杨化超张秋昭许志华
Owner ANHUI WANBEI COAL REFCO GRP LTD HANSHAN HENGTAI NONMETALLIC MATERIALS BRANCH
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