基于快速绘制原则的三维模型数据源集成框架

3D-model data source integrating frame based on fast-rending principle

异构数据源集成是建立复杂三维可视化系统的关键功能模块,在比较现有数据源集成方式的基础上,综合分析了典型三维模型数据源的数据类型、组织方式、存取方式等特点;在直接数据访问(DDA)的方式下,针对异构模型数据源各自特定的属性和拓扑关系以及逻辑组织制定了快速绘制原则,提出了一种符合数据交换原则的统一数据模型规范CUDM,规范了数据的表达与组织结构,为数据互操作提供了接口;在CUDM基础上,分析了异构数据源集成模块的功能和架构,搭建了三维模型数据源集成系统框架,并在实际应用中取得了预期效果。

Heterogeneous data source integrating module plays a pivotal role in a complicated 3D visualizing system. The characteristic of data type, organization method, access method of typical 3D model data structures are analyzed comprehensively, based on the comparison of the existing way of data source integrating. A fast-rending principle is made according to the attributes, topology and logical organization of heterogeneous data source, respectively, and a uniform data model criterion CUDM, which normalizes the expression and organization of dada and provides a interface for data interoperability, is presented, in a direct data access （DDA） mode. A 3D model data source integrating frame is established, based on CUDM and the analysis of the function and structure of the heterogeneous data source integrating module, and expected results are got in the practical application.