Research On The Optimization Method Of Indoor And Outdoor Points Of Interest Labeling Positions ——Taking Urban Business Districts As An Example

POI(Point of interest,POI)is an important infrastructure based on location services,which is widely used in map navigation and range search services.Due to the wide range and complexity of urban space,people often need to use maps for navigation and navigation.Accurate POI locations can help people quickly establish spatial cognition and shorten wayfinding time.On the basis of systematically sorting out the problems existing in POI marking positions and the current status of related research,this paper carries out related research from three aspects: POI optimization principle,POI optimization under outdoor view,and POI optimization under indoor view.The business district has carried out case verification for the study area.The research content of this paper includes the following three aspects:1.Analyze and summarize the POI location optimization principles.On the basis of systematically analyzing the influencing factors of POI labeling position,the concept of POI position accuracy is defined,and the POI position optimization principle is summarized,which provides a theoretical basis for the subsequent POI optimization method.2.The POI labeling position in the outdoor view is optimized.A POI location optimization method based on road and building shape is proposed.Based on the POI constraint relationship,abnormally marked POIs are identified,and the location distribution is corrected and optimized based on the POI optimization principle.3 POI labeling position optimization in indoor view.On the basis of traditional visual distance,a POI optimization method based on superimposed visual distance is proposed,so that the optimized POI can satisfy visual grouping cognition and reduce the visual distance of spatial elements.