论文部分内容阅读
数字地面模型(DTM)已广泛应用于工程各领域,特别在道路设计方面,但其存储方式有待探讨。论文总结了DTM的各种存储与处理方案,对比分析得出其特性尚不能满足应用实际的要求。提出了使用对象关系数据库来存储DTM数据,在业务逻辑层和关系数据库的物理存储结构中间增加一个对象关系包装模块的方法来满足实际要求。文章中还介绍了新方法应用于公路设计软件中处理不规则三角网数字模型及三维可视化的实例。
Digital terrain model (DTM) has been widely used in various fields of engineering, especially in road design, but its storage needs to be explored. The thesis summarizes the various storage and processing solutions of DTM, the comparative analysis shows that its characteristics can not meet the practical application requirements. The object relational database is proposed to store DTM data, and a method of adding object relational packaging module in the middle of the physical storage structure of business logic layer and relational database is proposed to meet the actual requirements. The article also introduces the application of the new method in the highway design software to deal with the irregular triangle digital model and three-dimensional visualization examples.