摘要
室内空间模型是室内导航的基础和关键所在,针对当前多数室内空间模型在建模过程中只考虑部分导航相关的影响因素,适用范围有限这一问题,结合室内导航特点,综合考虑用户室内移动特征、几何和语义信息表达、路径规划效率3个方面的建模影响因素,提出一种基于图的语义室内导航模型。基于图论的方法构建室内导航概念模型,然后在概念模型的基础上提出具体的几何图模型构建方法和语义信息表达方式,设计图模型中节点和边的数据结构,最后研究将该模型用于不同情景下室内路径规划的具体流程。
Indoor spatial model is the key to indoor navigation,most of which have limited applicability because only parts of factors related to navigation in modeling are concerned.According to the characteristics of indoor space,and the user behavior,geometric and semantic information expression,path planning efficiency,agraph-based semantic spatial model for indoor navigation is proposed to solve the problem.Firstly a conceptual indoor navigation model is built based on graph theory;secondly on the basis of the conceptual model,specific geometric graph modeling method and the way of semantic expression are proposed;then node and edge data structures are designed;finally the specific processes for path planning based on the model in different contexts is studied.It is of instructive significance to build context-aware indoor navigation model based on the proposed model.
出处
《测绘工程》
CSCD
2015年第1期48-52,共5页
Engineering of Surveying and Mapping
基金
国家863计划资助项目(2013AA12A202)
国家自然科学基金资助项目(41371382)
关键词
室内导航
图模型
语义表达
情景
数据结构
indoor navigation
graphical model
semantic expression
context
data structure
