基于线性参照技术的铁路三维场景快速建模方法研究

Research on Rapid Modeling Method of Railway 3D Scene Based on Linear Reference Technology

针对铁路三维场景建模速度效率低、计算程度复杂等问题,本文利用铁路空间数据的线性分布特征设计了基于线性参照技术的铁路三维场景建模方法。首先,对铁路三维场景中的实体对象进行了抽象简化;然后,对设备设施模型属性表和事件表进行设计;最后,利用动态分段技术和几何约束法进行铁路三维场景的快速建模工作。实验表明:利用线性参照技术进行铁路三维场景快速构建在一定程度上提高了铁路三维场景构建效率,能够较好地支持空间数据和属性数据的统一表达,在铁路三维地理场景的快速构建和分析方面具有优势。

Aiming at the problems of low speed,low efficiency and complex calculation of railway 3D scene modeling,using the linear distribution characteristics of railway spatial data,a railway 3D scene modeling method based on linear reference technology is designed.Firstly,the entity objects in the railway 3D scene are abstracted and simplified,and then the attribute table and event table of the equipment and facilities model are designed.Finally,the dynamic segmentation technology and geometric constraint method are used to quickly model the railway 3D scene.Experiments show that the rapid construction of railway 3D scene using linear reference technology improves the construction efficiency of railway 3D scene to a certain extent,and can better support the unified expression of spatial data and attribute data,and has advantages in the rapid construction and analysis of railway 3D geographic scene.