空间认知对等导航电子地图的简化探讨

基于地图功能的改变和移动服务独特的用图环境,提出采用“空间认知对等地图”以满足导航用户的认知需求;介绍“空间认知对等地图”的概念和地图中应表现的认知信息、地图的简化过程和简化过程中的拓扑关系维护,给出地图的简化效果。这种地图不仅能满足空间认知需要,而且能缓解目前在LBS应用中存在的地图数据与屏幕大小的矛盾,适应移动环境下用户的多行为状态和终端硬件特点。

Simplification of Spatial Cognition Equality Navigation Digital Map

This paper discusses the cartography elements used as spatial cognition in the course of user navigation in light of spatial cognition and the limitation of hardware resource in order to improve the map efficiency as spatial cognition tool in different environments,and puts forward the concept of"spatial cognition equality map"which merely represents map elements with important cognition value to user task,and suggests adopting such simplified map as navigation service map in mobile terminal.In the paper,the simplified methods of route shape,length,angle and the measure of topology maintenance in map simplification are discussed,such map form possesses high application value in LBS service because it can ease user's cognition burden.