| 利用约束D-TIN进行建筑物多边形凹部结构识别与渐进式化简 |
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| 引用本文： | 陈文瀚,龙毅,沈婕,李雯静.利用约束D-TIN进行建筑物多边形凹部结构识别与渐进式化简[J].武汉大学学报(信息科学版),2011(5):584-587,592. |
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| 作者姓名： | 陈文瀚 龙毅 沈婕 李雯静 |
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| 作者单位： | 南京师范大学地理科学学院;南京师范大学虚拟地理环境教育部重点实验室;南京师范大学地理信息科学江苏省重点实验室;武汉科技大学资源与环境工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(40671154,40701158); 江苏省科技支撑计划资助项目(BE2010100) |
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| 摘 要： | 分析了位于建筑物多边形外侧的凹部结构特征及其类型,探讨了一种基于凹部层次结构的建筑物多边形渐进式化简方法,即以三角形为形状基元,用约束Delaunay三角化方法对建筑物多边形进行空间剖分,从凹部三角形树中提取三角形序列,通过匹配特征序列识别凹部的基本模式,以确定和实施相应的凹部化简方法,在此基础上迭代执行识别-化简过程,以实现对建筑物复杂凹部的渐进式化简。实验分析表明,该方法具有结构化和渐进综合的特点。
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| 关 键 词： | 地图综合 约束Delaunay三角网 建筑物多边形 结构识别 渐进式化简 |
Structure Recognition and Progressive Si mplification of the Concaves of Building Polygon Based on Constrained D-TIN |
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| CHEN Wenhan, LONG Yi, SHEN Jie, LI Wenjing.Structure Recognition and Progressive Si mplification of the Concaves of Building Polygon Based on Constrained D-TIN[J].Geomatics and Information Science of Wuhan University,2011(5):584-587,592. |
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| Authors: | CHEN Wenhan LONG Yi SHEN Jie LI Wenjing |
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| Institution: | CHEN Wenhan1,2,3 LONG Yi1,3 SHEN Jie1,3 LI Wenjing4(1 School of Geographic Science,Nanjing Normal University,1 Wenyuan Road,Nanjing 210046,China)(2 Key Laboratory of Virtual Geographic Environment,Ministry of Education,China)(3 Key Laboratory of Geographic Information Science of Jiangsu Province,China)(4 School of Resources and Environmental Engineering,Wuhan University of Science and Technol... |
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| Abstract: | We analyze the characteristics and the types of the concave structures outside the building polygons,and discuss a progressive simplification method based on the hierarchical structure of the concave.In the method,a building polygon is partitioned by constrained Delaunay TIN,and as shape primitives,triangles are used to build the concave triangle tree and to extract triangle sequence.The basic patterns of concaves are recognized by the matching of the typical sequences,which confirm and adopt the correspond... |
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| Keywords: | map generalization constrained Delaunay TIN building polygon structure recognition progressive simplification |
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