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支持自动综合的多尺度三维建筑组织与管理

DOI: 10.3724/SP.J.1047.2015.00889, PP. 889-894

Keywords: 三维建筑综合,空间索引,空间数据管理,多尺度表达,GAMR树

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Abstract:

多尺度数据的有效组织与管理是实现三维建筑自动综合及多尺度应用的基础。本文对空间数据综合与多尺度表达数据管理方法的研究现状进行了分析。根据三维建筑自动综合的特点,本文提出了一种基于R树的多尺度三维建筑空间索引模型——GAMR树(GeneralizationAreaMulti-representationRTree);对GAMR树的定义和结构进行了详细描述,设计了顾及GAMR树高度与所选长度阈值关联关系的索引构建方法。针对三维建筑特点,设计了一种支持多尺度区域对象完整查询的检索方法,并根据建筑特征的可辨性,实现了顾及视线角度对投影长度影响的三维建筑模型多尺度可视化方法。实验证明,GAMR树能很好地适用于三维建筑多尺度模型的组织与管理,对三维建筑几何模型的自动综合具有重要意义。

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