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Disordered incremental sparse point cloud reconstruction method for ship traveling wave numerical simulation

A numerical simulation and sparse point technology, which is applied in the field of ships and ocean engineering, can solve the lack of accuracy verification of 3D reconstruction of free surfaces and other problems, and achieve the effect of accuracy verification and fine observation

Pending Publication Date: 2021-12-17
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

[0005] The existing technology lacks the accuracy verification of 3D reconstruction of free surfaces, and the auxiliary means of 3D reconstruction such as staining and projection have limitations

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  • Disordered incremental sparse point cloud reconstruction method for ship traveling wave numerical simulation
  • Disordered incremental sparse point cloud reconstruction method for ship traveling wave numerical simulation
  • Disordered incremental sparse point cloud reconstruction method for ship traveling wave numerical simulation

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Embodiment Construction

[0043] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordina...

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Abstract

The invention provides a disordered incremental sparse point cloud reconstruction method for ship traveling wave numerical simulation, and relates to the field of ship and ocean engineering, and the method comprises the following steps: S1, obtaining ship traveling wave free surface data caused by a target ship body in a regular wave environment through a viscous flow CFD numerical simulation method; S2, performing three-dimensional modeling in a physical engine according to the ship traveling wave free surface data to obtain a ship traveling wave model; S3, obtaining a three-dimensional point cloud on the free surface of the ship traveling wave by adopting a stereoscopic vision disordered incremental sparse point cloud reconstruction algorithm; and S4, comparing the three-dimensional point cloud and the viscous flow CFD numerical simulation ship traveling wave free surface data, and verifying the accuracy of the ship traveling wave three-dimensional reconstruction result. A physical engine is used for building a stereoscopic vision simulation environment, and a disordered incremental sparse point cloud reconstruction method is used for obtaining three-dimensional coordinate points. Therefore, the accuracy of three-dimensional reconstruction of the free surface of the ship traveling wave is verified, and the observation of the ocean wave is finer.

Description

technical field [0001] The invention relates to the field of ships and ocean engineering, in particular to a random incremental sparse point cloud reconstruction method for ship wave numerical simulation. Background technique [0002] The observation of ocean waves has gained more and more attention in recent years, and it can be of great help to many problems in scientific research or work applications. In response to this problem, technologies such as polarized images, X-band radar, remote sensing satellites, and stereo vision have all played a role. [0003] The study of ship traveling waves is inseparable from the observation of ocean waves, and stereoscopic 3D reconstruction is a relatively accurate non-contact measurement method, and it is very practical to apply it to the study of ship traveling waves. [0004] In order to observe ocean waves using stereoscopic vision technology, the prior art uses fluorescent chemical reagents to dye the recorded water to obtain an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/20G06F30/28G06F30/23G06F111/10G06F113/08G06F119/14G06F111/06
CPCG06T17/20G06F30/28G06F30/23G06F2113/08G06F2119/14G06F2111/10G06F2111/06Y02T90/00
Inventor 张佳宁胡洛铭李昱曹燕京
Owner DALIAN MARITIME UNIVERSITY
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