基于网格模型的导航道路图渐进式化简方法  

A progressive simplification method of navigation road map based on mesh model

作　　者：郭庆胜[1,3] 刘洋[1] 李萌 程晓茜 何捷 王慧慧 魏智威 GUO Qingsheng;LIU Yang;LI Meng;CHENG Xiaoxi;HE Jie;WANG Huihui;WEI Zhiwei(School of Resources and Environment Science,Wuhan University,Wuhan 430079,China;NavInfo Co.,Ltd.,Beijing 100049,China;State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China)

机构地区：[1]武汉大学资源与环境科学学院,湖北武汉430079 [2]北京四维图新科技股份有限公司,北京100094 [3]武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079

出　　处：《测绘学报》2019年第11期1357-1368,共12页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(41871378;41471384)~~

摘　　要：针对将导航数据精度降低时的道路图形综合转换为基于网格模型的线图形化简问题,提出了一种基于网格模型的导航道路数据渐进式协同图形综合方法。该方法能保证综合后的单条道路和道路网都与原始高精度数据保持空间方向关系相似。在数据处理过程中,用导航需求来约束道路的渐进式图形简化,并对道路形状和道路交叉处的空间方向关系进行维护,顾及了导航中道路的可视化效果。已用实际生产中的导航数据进行了验证,证明了本文方法是有效且实用的。In this paper the graphic generalization of roads is transformed into linear graphic simplification based on mesh model when the navigation data precision is decreased.A progressive collaborative graphic generalization method for roads in the navigation data is proposed based on the mesh model,which can ensure that the single road and road networks after generalization are similar to the original high-precision data in spatial directional relationship.In the process of data handling,the navigational requirements are applied to constrain the progressive graphic simplification of the road.Besides,characteristics of road shape and the spatial direction relationship at the intersection of roads are maintained while visualizations of the roads in navigation is taken into consideration.The algorithm proposed in this paper has been verified with navigation data in actual production,which proves the method is both effective and practical.

关 键 词：导航道路网 渐进式地图综合 线图形简化 网格模型 空间方向关系 

分 类 号：P208[天文地球—地图制图学与地理信息工程]