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数据库运行支撑环境——三维数据格式及存取技术

【作者】 张远

【导师】 张宏;

【作者基本信息】 南京理工大学 , 计算机应用, 2004, 硕士

【摘要】 本系统主要研究野战战场三维信息的表现、控制和处理,定义存储数据模型的数据库结构和对三维模型数据的简化和优化处理。本文吸收了面向对象思想,借鉴了数据库技术,三维技术及图像处理技术。研究如何将三维数据结构用关系型数据库的二维属性表示的问题,旨在关系数据库中存储三维模型数据,定义出一个合理的结构,有利于数据的传输和安全性,并按照战场显示效果应用要求对原始数据进行简化和优化处理。 本文定义了三维模型数据的存储格式,吸收了面向对象中的继承思想和面向对象数据库中的分段思想,在数据预处理中又采用了网格简化算法3D三角剖分法,4-8网格法和边折叠算法来处理数据,并对3D三角剖分法曲率准则和边折叠算法提出了改进,既有利于高效显示数据,又有利于减小数据库的存储量。

【Abstract】 This system does research on represent, control and management of battlefield three-dimension information. It is used for studying the database structure of storing data model and simplifying and optimizing the 3D model data. It uses object-oriented thinking, database technology and three-dimension technology. The question is how to use the two- dimension attribute of relational database for representing three- dimension data structure. The purpose is to store three dimension model data into relational database. It need define a proper structure in favor of the transmission and security of data. It need simplify and optimize original data according to represent effect of battlefield.In this paper, we define the data structure and perform the mesh simplification method of triangulation in three dimension, 4-8 meshes and edge-collapse algorithm. We also improve on the triangulation in three-dimension and edge-collapse algorithm to represent data faster and reduce the storage of database.

  • 【分类号】TP311.13
  • 【被引频次】1
  • 【下载频次】207
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