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Tunnel steel arch recognition method based on three-dimensional imaging

A recognition method, a three-dimensional imaging technology, applied in the field of feature recognition

Active Publication Date: 2020-04-17
CENT SOUTH UNIV
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Problems solved by technology

[0004] In order to achieve unmanned spraying, it is necessary to identify the spraying area first, and the spraying area is generally between every two steel arches, so the identification of steel arches is particularly important, and there is no ready-made The technology recognizes the steel arch on the 3D point cloud

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  • Tunnel steel arch recognition method based on three-dimensional imaging
  • Tunnel steel arch recognition method based on three-dimensional imaging
  • Tunnel steel arch recognition method based on three-dimensional imaging

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Embodiment Construction

[0069] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0070] Such as Figure 1~5 As shown, the present invention provides a method for identifying tunnel steel arches based on three-dimensional imaging, comprising the following steps:

[0071] The invention sequentially performs data preprocessing, point cloud coordinate system correction, radial filtering, steel arch feature point extraction and steel arch extraction to complete the identification process. Among them, the data preprocessing part performs voxel filtering on the original point cloud data, and reduces the data volume of the point cloud on the basis of not destroying the characteristics of each part, so as to improve the operation effi...

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Abstract

The invention discloses a tunnel steel arch recognition method based on three-dimensional imaging. The method comprises the following steps: data preprocessing, point cloud coordinate system correction, radial filtering, steel arch feature point extraction, steel arch extraction and the like. Through processing of three-dimensional point cloud data, a steel arch in a tunnel under construction canbe accurately recognized, and the method has high practical engineering significance in detection of the steel arch installation position and improvement of tunnel engineering machinery automation.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of three-dimensional reconstruction of tunnels and internal feature recognition, and in particular to a tunnel steel arch recognition method based on three-dimensional imaging. Background technique [0002] Tunnel is an important architectural form that people use to overcome complex terrain and make full use of geographical space to build roads and railways, and it plays a significant role in infrastructure construction around the world. Therefore, the construction of tunnels is becoming more and more frequent. At the same time, we also have to face the harsh environment brought about by tunnel construction, such as limited light source, humidity, thin air, falling rocks and even landslides, especially when spraying the tunnel surface, we also face dust and noise The problem, which aggravates the physical harm to the construction workers. Although the tunnel spraying technology is get...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/46G06T17/00
CPCG06T17/00G06T2200/08G06V20/64G06V10/44Y02P90/30
Inventor 谢斌丘文杰张文婷
Owner CENT SOUTH UNIV
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