真实感海底地形三维可视化实现技术
发布时间：2018-12-19 10:17
【摘要】：资源和环境是人类生存和发展的基本条件。海洋中蕴藏着各种丰富的资源。随着陆地资源的日益短缺，沿海各国不断加大对海洋环境的研究力度，更加重视对海洋——“蓝色国土”的开发与利用，同时围绕海岛归属的争端也日趋激烈，尤其是我国在东海和南海的方向与许多国家都有海上领土争端的问题。 海底地形作为深海环境的基础地理环境要素，对其进行逼真的模拟和再现，是人们对海底环境进行了解的基本手段和方法。真实的再现海底地形的主要特征及其可视化效果，对人类研究海洋环境、开发海洋资源、保护海洋环境、建设海底工程以及遂行海上作战任务等方面有着巨大的现实意义。 真实感的海底地形三维可视化包括两个方面：真实海底地形的可视化、真实海底环境效果的可视化。本文以VC++6.0平台为基础，通过运用OpenGL图形库，，构建了真实海底地形的三维模型，实现了海底地形真实感效果的可视化。 1、分析了海底地形三维可视化的研究现状，指出了目前海底地形三维可视化方面存在的问题：①针对海底地形建模方法的研究主要集中数据组织、管理和内插算法优化方面，对建模方法和内插算法针对海底地形的适用性研究较少。②针对海底地形可视化真实感效果的研究较少。 2、介绍数字高程模型主要的构建方法，通过实验比较和分析了海底地形规则格网DEM和不规则三角网DEM的表现效果，决定采用规则格网的海底地形DEM构建方法。 3、分析和比较了目前常见的几种内插方法，综合考虑本文所使用的离散水深点数据的特点，决定采用八方向反距离加权内插算法构建海底地形规则格网DEM。 4、介绍和分析了OpenGL图形库的工作原理和流程，并基于OpenGL实现了海底地形的三维可视化，以及分层设色、光照、明暗、雾化等真实感效果。 5、设计了真实感海底地形三维可视化系统框架结构，完成了系统的开发，并实现了系统的人机交互功能和分析应用功能。
[Abstract]:Resources and environment are the basic conditions for human survival and development. The ocean is rich in all kinds of resources. With the increasing shortage of land resources, coastal countries have been increasing their research on marine environment, paying more attention to the development and utilization of the ocean-Blue Land, and at the same time, the disputes over the ownership of the islands are becoming increasingly fierce. In particular, China has maritime territorial disputes with many countries in the East China Sea and the South China Sea. As the basic geographical environment element of deep-sea environment, submarine topography is a basic means and method for people to understand the seabed environment by simulating and reproducing it lifelike. It is of great practical significance for human beings to study the marine environment, develop marine resources, protect marine environment, construct submarine engineering and carry out maritime combat tasks. The 3D visualization of realistic submarine terrain includes two aspects: the visualization of real submarine topography and the visualization of real seabed environmental effects. Based on the VC 6.0 platform, the 3D model of the real submarine terrain is constructed by using the OpenGL graphics library, and the visualization of the realistic effect of the submarine terrain is realized. 1. The present situation of 3D visualization of submarine terrain is analyzed, and the existing problems in 3D visualization of submarine terrain are pointed out. 1 the research on modeling method of submarine terrain mainly focuses on data organization, management and optimization of interpolation algorithm. There are few researches on the applicability of modeling methods and interpolation algorithms for submarine topography. 2. The main construction methods of digital elevation model are introduced. The performance of DEM and DEM are compared and analyzed experimentally, and the method of constructing DEM of seabed terrain with regular grid is adopted. 3. Several common interpolation methods are analyzed and compared. Considering the characteristics of the discrete depth data used in this paper, it is decided to use the octagonal inverse distance weighted interpolation algorithm to construct the seabed terrain rule grid DEM.. 4. The working principle and flow of OpenGL graphics library are introduced and analyzed, and the 3D visualization of submarine terrain is realized based on OpenGL, and the realistic effects such as layered color, illumination, light and atomization are also introduced. 5. The frame structure of the 3D visualization system of realistic submarine terrain is designed, the system is developed, and the man-machine interaction function and the analysis and application function of the system are realized.
【学位授予单位】：解放军信息工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P229.1
本文编号：2386783
[Abstract]:Resources and environment are the basic conditions for human survival and development. The ocean is rich in all kinds of resources. With the increasing shortage of land resources, coastal countries have been increasing their research on marine environment, paying more attention to the development and utilization of the ocean-Blue Land, and at the same time, the disputes over the ownership of the islands are becoming increasingly fierce. In particular, China has maritime territorial disputes with many countries in the East China Sea and the South China Sea. As the basic geographical environment element of deep-sea environment, submarine topography is a basic means and method for people to understand the seabed environment by simulating and reproducing it lifelike. It is of great practical significance for human beings to study the marine environment, develop marine resources, protect marine environment, construct submarine engineering and carry out maritime combat tasks. The 3D visualization of realistic submarine terrain includes two aspects: the visualization of real submarine topography and the visualization of real seabed environmental effects. Based on the VC 6.0 platform, the 3D model of the real submarine terrain is constructed by using the OpenGL graphics library, and the visualization of the realistic effect of the submarine terrain is realized. 1. The present situation of 3D visualization of submarine terrain is analyzed, and the existing problems in 3D visualization of submarine terrain are pointed out. 1 the research on modeling method of submarine terrain mainly focuses on data organization, management and optimization of interpolation algorithm. There are few researches on the applicability of modeling methods and interpolation algorithms for submarine topography. 2. The main construction methods of digital elevation model are introduced. The performance of DEM and DEM are compared and analyzed experimentally, and the method of constructing DEM of seabed terrain with regular grid is adopted. 3. Several common interpolation methods are analyzed and compared. Considering the characteristics of the discrete depth data used in this paper, it is decided to use the octagonal inverse distance weighted interpolation algorithm to construct the seabed terrain rule grid DEM.. 4. The working principle and flow of OpenGL graphics library are introduced and analyzed, and the 3D visualization of submarine terrain is realized based on OpenGL, and the realistic effects such as layered color, illumination, light and atomization are also introduced. 5. The frame structure of the 3D visualization system of realistic submarine terrain is designed, the system is developed, and the man-machine interaction function and the analysis and application function of the system are realized.
【学位授予单位】：解放军信息工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P229.1
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