Virtual-reality modeling method of ocean water body

A technology of virtual reality and modeling method, which is applied in the field of virtual reality modeling of ocean water bodies, can solve the problems of expensive commercial software, low real-time performance, and complexity, and achieve clear visualization results, shorten data processing cycle, and timeliness Improved effect

Inactive Publication Date: 2010-02-17
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on marine 3D real-time modeling is still in its infancy. The real-time performance is not high, th

Method used

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  • Virtual-reality modeling method of ocean water body
  • Virtual-reality modeling method of ocean water body
  • Virtual-reality modeling method of ocean water body

Examples

Experimental program
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Effect test

Example Embodiment

[0102] Example

[0103] Taking the ocean remote sensing temperature inversion data in March 2006 as an example, first read the information in the header file in the file stream method as follows:

[0104] Name

[0105] Cycle

[0106] Second, store the information in the header file in the metadata table. Among them, the periodic value of periodic products is stored in the metadata table, and non-periodic products are stored as 0. Take this data as an example, the periodic value is 31; convert Julian days into months and days, where periodic product time The record table stores the start date (2006-03-01) and the end date (2006-03-31); the above time storage objects are consistent with the time type in the SQL standard, so the standard SQL language can quickly query the time The data set in the collection.

[0107] Third, Z-axis zoom, XY-axis coordinate plane translation in the vertical screen direction, coordinate system rotation, and X and Y-axis coordinate units are unified...

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Abstract

The invention discloses a virtual-reality modeling method of an ocean water body. The method comprises the following steps: constructing a main body of a model by utilizing remote sensing (RS) data ina convenient and high-efficiency data-processing process and a scientific storage mode based on an OpenGL technology; adopting a contour line of an ocean surface experimental area to construct a three-dimensional modeling method of a three-dimensional ocean water body; presenting ocean surface waves by texture mapping; utilizing the projection of a parallel contour line to construct a cylindricalbody of the water body to present physical quantity change conditions of the RS data, such as the water depth, the water quality, and the like; and representing the ocean water body and undersea topography in a transparent body mode. The new method realizes the modeling of the three-dimensional ocean water body by utilizing the OpenGL technology as a modeling tool under the technical support of the RS and the GIS (Geographic Information System). The real-time modeling of the three-dimensional ocean water body is realized by effectively utilizing the long-term collected RS data through convenient and feasible data processing and the model-drawing method. The invention has extremely wide application prospects in the ocean environmental monitoring field.

Description

technical field [0001] The invention relates to a modeling method of an ocean water body, in particular to a virtual reality modeling method of an ocean water body. It is used to realize rapid and real-time modeling of marine water bodies. Using this method, the observation area can be arbitrarily delineated in the China Sea area for 3D modeling. Background technique [0002] The ocean accounts for about 71% of the earth's surface area. It is an open and complex system with diversity, in which there are various time and space scales and different levels of material existence and movement forms. At present, the expression of ocean water bodies is mainly in the form of two-dimensional maps such as electronic charts, and the inversion data such as ocean temperature, salinity, and transparency mostly exist in the form of text. With the development and utilization of marine resources, the demand for 3D modeling and visualization of marine water and marine environment inversion d...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T15/00
Inventor 刘南刘仁义张丰李昭黄克玲杜震洪
Owner ZHEJIANG UNIV
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