摘要
从三维建筑的数据组织入手,提出了一种适于综合的数据结构,从平行结构建筑的正交化处理、平面结构的引入和特征信息的获取三个方面分析了建筑的结构化方法;根据可视化需求,将建筑LOD分为三个层次,在此基础上,以最短距离为指标实现了平行结构建筑的面平移化简算法。实验证明,该算法具有较高的效率和较好的通用性,对于平行结构建筑几何特征的化简具有良好的效果。
Building with parallel structures is the most popular kind in modern city.As the widely used 3D city model,more and more generalization methods for this kind of building have been developed.This paper begins with the structuring of 3D building data and then a data structure that benefits the generalization is proposed.Orthogonal of building,introduction of polygon and acquisition of feature information are used in building construction.According to the requirement of visualizations,LODs of city buildings are divided into three levels.Based on which,a simplification algorithm of shifting facet based on minimal distance is realized in the simplification of the building with parallel structures.Experiment was done to prove the good efficiency and usability of the algorithm and the algorithm works well in simplification of buildings with parallel structures.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2010年第8期896-900,共5页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40620130438)
国家863计划资助项目(2007AA12Z21)
河南省创新型科技人才队伍建设工程资助项目
关键词
三维建筑综合
面平移算法
化简
LOD
最短距离
3D building generalization
facet shift algorithm
simplification
LOD
minimal distance
