地图符号空间冲突关系的本体表达

In the Modern Cartography, intelligence and automation has been a target of the study. Digital cartographic production efficiency had greatly accelerated the cartography, however there are many links still require manual intervention, which maps symbols' spacial conflict relationship handling is one of the lowest levels of automation links which also one of the most urgent need to address the issues.However,the research about the conflicts mainly depend on mathmatics and couldn't keep the whole spatial relation. As the reasons above,how to represent the symbolconflict already exist is the preconditins of dealing with the conflicts.The subject based on the uses the method of ontology to build the　ontology of map elements' symbol. In the same time ,the subject take the spatial geometric features and ontology property of cartographic object are taken into account. The subject bases on ontologic descriptive language in order to achieve the aim of the cartographic symbols' spatial conflict relation's explicit expression. We take the national 1:50000 foundation geography information data as research object, in order to bulid the database of cartographic symbol ontology, which could describe the topologic senmatic relation between the cartographic symbols and express the ontologic character of cartographic symbol,get the rational expressions of cartographic symbols' spatial conflict relation.Combining the theory and the specific application, the subject realizes the expression and reasoning of cartographic symbols' spatial conflict relation based on ontology and provide a new idea and method for automated processing of map features relationship under the conditions of the digital cartography.

地图制图的智能化、自动化一直是现代地图制图学的研究目标之一。数字制图大大加速了地图制图的生产效率，然而仍有许多环节需要手工干预，其中地图符号空间冲突关系的处理是自动化程度最低的环节之一，也是迫切需要解决的问题之一。但是，目前关于冲突的研究主要依赖数学方法，在解决冲突时往往不能保持符号的整体空间关系，因此，如何正确表达已有的符号冲突是处理冲突的先决条件。本项目采用本体论方法，建立地图要素符号本体；兼顾制图对象的空间几何特征和本体属性特征，基于本体描述语言实现地图符号空间冲突关系的显式化表达；拟以国家1：5万数据为研究对象，建立地图符号本体数据库，描述地图符号之间的拓扑语义关系，显示地图符号的本体特征，合理的表达地图符号之间的空间冲突关系。本项目将理论研究和具体应用相结合，基于本体方法实现地图符号空间冲突关系的表达，为数字地图制图条件下地图要素关系的自动化处理提供一种新的思路和方法。

本项目基于已有的地图制图领域专家知识，从地图要素符号本身出发，以1:50000基础地理信息数据为研究对象，使用本体表达方法，以属性枚举的方法构建了地图要素符号本体库；兼顾制图对象的空间几何特征和本体属性，实现了以自然语言描述的地图符号空间冲突关系的表达，并基于SWRL实现了地图符号空间冲突关系的形式化表达；运用层次分析法确定了地图符号的定位优先级，实现了地图符号优先级的定量化表达；以PB图形结构为基础，构建了地图符号应用本体，创建了地图要素符号应用本体库，设计了地图符号冲突检测模型，实现了要素集地图符号冲突的显式表达，为数字地图制图条件下地图要素关系的自动化处理提供了一种新的思路和方法。