BSP树与格网划分相结合的数字城市三维模型组织方法

3D model organization method of digital city based on BSP tree and grid division

日益增长的数字城市三维模型实时可视化显示需求对海量三维模型的高效组织与调度提出了很高的要求,文中基于前人研究成果提出空间分区二叉树(BSP树)与格网划分相结合的数字城市三维模型组织方法,并基于Unity3D采用视点相关的多线程动态调度策略进行了实践应用验证,结果表明该方法高效、可靠,能够满足海量数字城市三维模型的动态可视化与空间分析的需要。

The higher requirements were put forwards for the efficient organization of massive 3D model data with the growing real-time visualization of 3D model data of digital city application demand, in this paper, 3D model organization method was proposed combined with binary space partitioning tree (BSP tree) and grid division based on previous research results. In addition, multithreaded dynamic scheduling strategy related to viewpoint based on Unity3D was applied to verify the validation of the method. The results showed that this method was efficient and reliable, and could meet the need of dynamic visualization and spatial analysis of massive 3D model data of digital city.