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Ore body three-dimensional automatic modeling method based on K neighbors and Poisson curved surfaces

An automatic modeling and K-nearest neighbor technology, which is applied in the field of geological information, can solve the problems of large randomness in manual boundary delineation, difficulty in coping with changes in complex working conditions, and high labor intensity of operators, so as to save manpower and time, and model The effect of high geometric quality and strong social and commercial value

Active Publication Date: 2020-06-09
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a three-dimensional ore body based on K-nearest neighbor and Poisson curved Automatic modeling methods address the above technical deficiencies

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  • Ore body three-dimensional automatic modeling method based on K neighbors and Poisson curved surfaces

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Embodiment Construction

[0033] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] A 3D geological modeling method based on K nearest neighbor (KNN) and Poisson algorithm, such as figure 1 shown, including:

[0035] Step 1. Extract the required drilling space data and attribute data according to the determined exploration line;

[0036] Step 2, preprocessing the data obtained in step 1, converting each feature of the sample into a standard normal distribution, normalizing the data, and obtaining a data point set;

[0037] Step 3, according to the data obtained in step 2, determine the modeling space according to the area extraction range where the ore body occurs;

[0038] Step 4, input the data point set obtained in step 2 and the modeling space delineated in step 3, and construct a k-d tree...

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Abstract

The invention provides an ore body three-dimensional automatic modeling method based on K neighbors and Poisson curved surfaces. The ore body three-dimensional automatic modeling method comprises thesteps of extracting needed drilling space data and attribute data according to a determined exploration line; preprocessing the obtained data, converting each feature of the sample into standard normal distribution, and normalizing the data; constructing a k-d tree by utilizing the obtained data; performing k-nearest neighbor search on any sample in the to-be-modeled space by utilizing the constructed k-d tree, and determining a k-nearest neighbor sample of the current sample; predicting a k-nearest neighbor sample of the current sample; obtaining ore body curved surface point cloud model data; solving an indication function, extracting a contour surface, and finally establishing an ore body model.

Description

technical field [0001] The invention relates to the technical field of geological information, in particular to a three-dimensional automatic modeling method of an ore body based on K-nearest neighbors and Poisson curved surfaces. Background technique [0002] 3D geological modeling and 3D geological body modeling technology is to interpret topological information and determine geometric shape of ore bodies through geological survey data. It is the foundation and core of digital mine and the core technology of 3D geological information system. At present, the 3D solid modeling methods in geographic space are becoming more and more mature, but the rapid construction of complex models is still a problem that needs to be solved urgently. [0003] According to the principle of model construction, it can usually be divided into explicit modeling and implicit modeling. Explicit modeling is based on manually delineating the outline of the orebody, and the three-dimensional reconst...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05G06T17/20
CPCG06T17/05G06T17/20
Inventor 葛凌安李章林
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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