3D electronic chart generation method based on gis and virtual reality technology

A virtual reality technology, electronic chart technology, applied in the direction of electronic digital data processing, maps/plans/charts, special data processing applications, etc., can solve the problem of staying in the demonstration stage, failing to model analysis and spatial analysis functions, and lack of autonomy Intellectual property rights and other issues to achieve the effect of improving shipping safety

Active Publication Date: 2018-09-11
WUHAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

However, my country still has the following deficiencies in the development of 3D electronic chart systems: ① most of the underwater terrain, flow field values, and navigation mark distribution are simulated separately, and the comprehensive display ability is weak, and most of them stay in the demonstration stage; ② focus on Simulation fails to effectively integrate the model analysis and spatial analysis functions of GIS, so it lacks scientific quantitative analysis; ③ Most of them are secondary developments on foreign related systems, lacking independent intellectual property rights, and there are certain problems in system maintenance and upgrades

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  • 3D electronic chart generation method based on gis and virtual reality technology
  • 3D electronic chart generation method based on gis and virtual reality technology
  • 3D electronic chart generation method based on gis and virtual reality technology

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with specific examples and accompanying drawings.

[0032] The invention provides a method for generating a three-dimensional electronic chart based on GIS and virtual reality technology, such as figure 1 As shown, it includes the following steps:

[0033] S1. Establish a three-dimensional terrain model:

[0034] Based on GIS and 3ds Max, based on the highly realistic 3D geographical scene, the sea / river bed DEM is established by using the irregular grid model method, and the splicing of the sea / river bed DEM and the land DEM is completed;

[0035] S2. Establish a special database model:

[0036] According to the survey data, the visual modeling of the scene area is restored to restore the real and realistic terrain, navigation marks and artificial buildings;

[0037] S3. Establish water surface model and water flow numerical simulation model:

[0038] The real-time water level of the water surface...

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Abstract

The present invention provides a three-dimensional electronic nautical chart generating method based on a GIS and a virtual reality technology, which comprises: establishing a three-dimensional terrain model; establishing a thematic database model; establishing a water surface model and a flow numerical simulation model; establishing a ship model database module; carrying out association and fusion on simulation calculation results of the three-dimensional terrain model, the thematic database model, the water surface model, the flow numerical simulation model and the ship model database module, carrying out comprehensive display on various types of data and constructing a virtual reality scene; and by model analysis and space calculation, providing services for ship navigation. The three-dimensional electronic nautical chart generating method is used for constructing a three-dimensional electronic nautical chart capable of being applied to the actual ship production practice, a virtual and vivid decision-making environment is provided for a driver and shipping safety is improved.

Description

technical field [0001] The invention belongs to the field of ship navigation, in particular to a three-dimensional electronic chart generation method based on GIS and virtual reality technology. Background technique [0002] In recent years, with the development of technologies such as GPS / GIS / GSM technology, automatic ship identification system (AIS), and electronic chart display and information system (ECDIS), my country's maritime agencies have successively developed three-dimensional electronic charts based on virtual reality. The development work has achieved certain results. However, my country still has the following deficiencies in the development of 3D electronic chart systems: ① most of the underwater terrain, flow field values, and navigation mark distribution are simulated separately, and the comprehensive display ability is weak, and most of them stay in the demonstration stage; ② focus on Simulation fails to effectively integrate the model analysis and spatial a...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06F17/30G09B29/00
CPCG06F16/29G09B29/00
Inventor汪洋魏晓阳严新平王理均黄金辉
OwnerWUHAN UNIV OF TECH