Geological structure surface extraction method and device based on optical image

An optical imaging and geological structure technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as difficulty in survey and identification, complex and diverse natural features, and complex formation of rock mass structures.

Active Publication Date: 2021-02-12
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0003] However, the structure of the rock mass is complex in origin, and the exposure is random, resulting in complex and diverse natural features and shapes, making it difficult to investigate and identify

Method used

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  • Geological structure surface extraction method and device based on optical image
  • Geological structure surface extraction method and device based on optical image
  • Geological structure surface extraction method and device based on optical image

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Embodiment Construction

[0038] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0039] refer to figure 1 , which is a schematic flowchart of the method for extracting geological structure planes based on optical images provided by the present invention, including specific steps.

[0040] Step 1, collect optical image sequences of geological objects, generate dense point clouds from them, and obtain the real spatial position of dense point clouds.

[0041] In the embodiment of the present invention, the sparse point cloud corresponding to the optical image sequence is generated based on the motion recovery structure, and the dense point cloud is reconstructed through multi-view clustering and dense matching based on the patch model.

[0042] In the embodiment of the present invention, through the control points arranged on the geological objects, the total station is used to measure the object space coordinates of the con...

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Abstract

The invention discloses a geological structure surface extraction method and device based on an optical image, and the method comprises the steps: collecting an optical image sequence of a geologicalobject, generating dense point clouds from the optical image sequence, and obtaining the real spatial positions of the dense point clouds; calculating a normal vector of each point in the dense pointcloud, and calculating a corresponding local occurrence according to the normal vector of each point; dividing the geological object into a plurality of homogeneous region units according to image texture semantics, and determining each pixel point set with consistency in the homogeneous region units as a structural plane unit; and merging and clustering the adjacent structural plane units with similar occurrence, and establishing a geological topological adjacent map of the structural plane unit set. By adopting the scheme, homogeneous region unit division is carried out through image texturesemantics, and combined clustering of structural plane units is carried out in combination with occurrence, so that discrimination of a structural plane and a non-structural plane is effectively realized, and extraction of the structural plane is carried out.

Description

technical field [0001] The invention relates to the field of geological surveying, in particular to a method and device for extracting geological structure planes based on optical images. Background technique [0002] Energy, transportation, water conservancy and hydropower projects are developing towards large-scale and super-large-scale projects. Most of these projects are located in the rock mass environment, in which the structure of the rock mass plays an important role in the analysis of rock mass deformation and stability. The requirements for rapid extraction and accurate expression of information are very urgent. [0003] However, the structure of the rock mass is complex in origin, and the exposure is random, resulting in complex and diverse natural features and shapes, making it difficult to investigate and identify. In the fields of geology and geotechnical engineering, the accurate identification and extraction of structural planes has always been a difficult p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/73G06K9/46G06K9/62
CPCG06T7/73G06V10/56G06F18/23
Inventor 张荣春衣雪峰卢官明李浩张学东陈媛媛何逸婷陈德良郭献涛
Owner NANJING UNIV OF POSTS & TELECOMM
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