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| 利用Sweep造型法进行管网精细化三维建模 | |
| 引用本文： | 周京春, 李清泉, 施昆. 利用Sweep造型法进行管网精细化三维建模[J]. 武汉大学学报 ( 信息科学版), 2015, 40(5): 661-666. DOI: 10.13203/j.whugis20140429 |
| 作者姓名： | 周京春 李清泉 施昆 |
| 作者单位： | 1武汉大学测绘学院,湖北武汉,4300792昆明市城市地下管线探测管理办公室,云南昆明,6500413深圳大学空间信息智能感知与服务深圳市重点实验室,广东深圳,5180604昆明理工大学国土资源工程学院,云南昆明,650093 |
| 基金项目： | 国家住建部2015科技示范工程资助项目(2015-S5-020)；昆明市工业与信息化委员会重点信息化建设项目(昆工信发[2011]270号,昆工信发[2012]108号) |
| 摘 要： | 管网三维建模中的一个重要问题是如何根据管线中心线坐标计算得到管网实体表面顶点的坐标,特别是管段与管点衔接处的表面处理。利用扫描(Sweep)造型法,根据实体之间的拓扑连接关系,将一条管线看作是整张连续的曲面,自动建立管线和管点的三维模型,可不必再做拼接处理。此方法通过对管线进行倒圆角及分段处理,在管线中心线各分段点上建立连续标架,计算得到分段点对应的管网实体表面顶点的坐标,并采用布尔并集运算合成管点模型的方法来建立各管网实体的精细化模型。实验结果表明,管网实体表面顶点坐标正确、光滑连续,建模程序简化,性能提高,效果良好。 |
| 关 键 词： | 管网 三维建模 扫描造型法 轨迹线 标架 布尔并集 |
| 收稿时间： | 2014-06-03 |
| 修稿时间： | 2015-05-05 |
Refined 3DModeling of Pipeline Based on Sweeping Method |
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| ZHOU Jingchun, LI Qingquan, SHI Kun. Refined 3DModeling of Pipeline Based on Sweeping Method[J]. Geomatics and Information Science of Wuhan University, 2015, 40(5): 661-666. DOI: 10.13203/j.whugis20140429 | |
| Authors: | ZHOU Jingchun LI Qingquan SHI Kun |
| Affiliation: | 1School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China;2Kunming Urban Underground Pipeline Detection Management Office,Kunming 650041,China;3Shenzhen Key Laboratory of Spatial Smart Sensing and Services,Shenzhen University,Shenzhen 518060,China4 Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China |
| Abstract: | One of the important problem in the field of pipeline 3Dmodeling is how to calculate the co-ordinates of vertices on the surface of pipelines,especially surface processing of piping connections.According to the connectivity topology of pipeline networks,using the“Sweep”modeling method cangenerate the whole surface of the pipe and establish the pipe model automatically without having todeal with the issue of joining patches.Through recursion after filleting and subdividing the pipe cen-terline to establish continuous frames at sub-points,vertices on surface corresponding to sub-pointscan be calculated,and then use the boolean union method to generate pipeline joints.The results showthat the coordinates of vertices on the surface is correct,and the entire surface is continuous andsmooth.The sweeping method reduces the steps of establishing the pipe model and has a better per-formance,and it achieves a good effect in the practical applications. |
| Keywords: | pipeline 3Dmodeling Sweeping method trajectory frame boolean union |
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