%0 Journal Article
%T 一种基于特征的复杂平房顶建筑化简算法<br>A Feature Analysis Approach in Simplification of 3D Building with Complex Flat Roof
%A 葛磊
%A 武芳
%A 李建胜
%A 马智刚
%J 北京大学学报（自然科学版）
%D 2017
%R 10.13209/j.0479-8023.2016.111
%X 摘要 基于特征分析的方法, 对复杂平房顶建筑的综合算法进行研究, 将建筑特征分为双边特征、三边特征和部件特征三类。根据各类特征的特点, 设计具体的化简算子, 在分析各算子之间关系的基础上, 设计化简算法的一般流程。以两类典型建筑和建筑群为基础, 对所提出的算法进行实验验证, 当采用不同阈值进行化简时, 建筑的主要特征均保持良好, 综合结果合理, 算法效率较高。<br>Abstract A new generalization approach based on feature analysis method is proposed to deal with buildings with complex flat roof. This approach divides features of building roof into three types, which are two-edge feature, three edge feature and component feature. Simplification algorithms are developed to deal with different feature types. By analyzing the relationship of the three algorithms, a detailed process to simplify complex flat roof is developed. The approach is implemented and tested on a number of 3D buildings. Two typical buildings and a building cluster are simplified by the proposed algorithm under different threshold. The experiment results show that the 3D building can be efficiently generalized, while the characteristics of roof structure can be well preserved after simplification.
%K 三维建筑
%K 综合
%K 化简
%K 特征分析
%K 多细节层次&lt
%K br&gt
%K 3D building
%K generalization
%K simplification
%K feature analysis
%K LOD
%U http://xbna.pku.edu.cn/CN/abstract/abstract3031.shtml