Construction method and system of pipeline three-dimensional model, and medium

A 3D model and construction method technology, applied in 3D modeling, image data processing, instruments, etc., can solve the problems of low modeling efficiency, unfavorable three-dimensional visualization measurement and analysis of sewer pipes, slow modeling speed, etc., and achieve data acquisition Simple method, 3D visualization and fast modeling

Pending Publication Date: 2021-03-30
WUHAN EASY SIGHT TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of the pipeline scene, the CCTV crawler will stagnate when it encounters obstacles and shake itself when traveling in the pipeline. The point cloud sequence frame data of the pipeline section it collects has the following defects: The value of the cable tray between the cables is large, which leads to serious distortion of the reconstructed 3D model data of the pipeline; the pipe center shifts up and down, etc.
However, this method has the following defects: it takes a long time to collect data, the modeling speed is slow, and the cost is high
These deficiencies are also not conducive to the 3D visualization and related measurement and analysis of sewer pipes
[0005] Therefore, a new method for constructing a 3D pipeline model is needed, which can not only overcome the problems of model distortion caused by 3D modeling directly based on the point cloud sequence frame data of the pipeline section, but also overcome the problems collected by the 3D laser scanner. Low modeling efficiency and high cost caused by 3D data modeling

Method used

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  • Construction method and system of pipeline three-dimensional model, and medium
  • Construction method and system of pipeline three-dimensional model, and medium
  • Construction method and system of pipeline three-dimensional model, and medium

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Experimental program
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Effect test

Embodiment 1

[0032] Embodiment one, as figure 1 As shown, a method for constructing a pipeline three-dimensional model includes the following steps:

[0033] S1: Obtain the initial point cloud data sequence of the inner wall of the target pipeline, perform denoising and pipeline center correction processing on the initial point cloud data sequence, and obtain the target point cloud data sequence;

[0034] S2: Using a preset grid reconstruction method, construct a 3D network according to the target point cloud data sequence, and obtain a 3D model of the target pipeline.

[0035] Firstly, by obtaining the initial point cloud data sequence of the inner wall of the target pipeline, the initial point cloud data sequence can accurately describe the relevant information of the inner wall of the pipeline. There are noise points in the cloud data sequence, and the pipe core is offset. Therefore, the denoising processing and pipeline center correction processing of the initial point cloud data sequ...

Embodiment 2

[0091] Embodiment two, based on embodiment one, such as Figure 11 As shown, this embodiment also discloses a system for constructing a three-dimensional pipeline model, which is applied to the method for constructing a three-dimensional pipeline model in Embodiment 1, including a data acquisition module, a data processing module, and a three-dimensional modeling module;

[0092] The data acquisition module is used to acquire the initial point cloud data sequence of the inner wall of the target pipeline;

[0093] The data processing module is used to perform denoising and pipeline center correction processing on the initial point cloud data sequence to obtain a target point cloud data sequence;

[0094] The 3D modeling module is configured to use a preset grid reconstruction method to construct a 3D network according to the target point cloud data sequence to obtain a 3D model of the target pipeline.

[0095] The construction system of the pipeline three-dimensional model in ...

Embodiment 3

[0130] Embodiment 3. Based on Embodiment 1 and Embodiment 2, a system for constructing a three-dimensional pipeline model is also provided, including a processor, a memory, and a computer program stored in the memory and operable on the processor. When the computer program runs, it realizes figure 1 The method steps of S1 to S2 in the first embodiment.

[0131] Through the computer program stored in the memory and run on the processor, various corrections can be made to the initial point cloud data sequence of the inner wall of the pipeline directly collected to overcome the defects in the original data, and based on the corrected target point cloud The data sequence reconstructs an accurate three-dimensional model of the pipeline, and then builds an accurate digital urban sewer, realizes three-dimensional visualization of the pipeline, and has a high accuracy rate. Compared with the traditional three-dimensional laser scanner, the data acquisition method is simpler and the mo...

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Abstract

The invention relates to a construction method and system of a pipeline three-dimensional model, and a medium. The method comprises the following steps: obtaining an initial point cloud data sequenceof the inner wall of a target pipeline, carrying out the denoising and pipeline center correction of the initial point cloud data sequence, and obtaining a target point cloud data sequence; and performing three-dimensional network construction according to the target point cloud data sequence by adopting a preset gridding reconstruction method to obtain a target pipeline three-dimensional model. Various corrections can be carried out on the directly collected initial point cloud data sequence of the inner wall of the pipeline, the defects in original data are overcome, the accurate three-dimensional model of the pipeline is reconstructed according to the corrected target point cloud data sequence, three-dimensional visualization of the pipeline is achieved, the accuracy is high, the modeling efficiency is higher, and the cost is lower.

Description

technical field [0001] The invention relates to the technical field of sewer detection and data processing, in particular to a method, system and medium for constructing a three-dimensional model of a pipeline. Background technique [0002] For data collection and modeling of sewers with little water, lidar technology has a good application effect, which belongs to non-contact automatic measurement technology. [0003] At present, the mainstream technical solutions are mainly the following two types, one is to use a CCTV crawler (referring to a crawler that applies closed-circuit television to pipeline detection in the drainage industry) equipped with a laser radar probe to collect the point cloud sequence of the pipeline section frame data. In the prior art, the pipeline three-dimensional model is usually constructed directly on the received point cloud sequence frame data. However, due to the complexity of the pipeline scene, the CCTV crawler will stagnate when it encoun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 王翔王高峰冯成会
Owner WUHAN EASY SIGHT TECH
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