Research On Detection And Processing Of Toplogical Conflict In Road Network Incremental Update

With the rapid development of spatial information technology,users of different industries have put forward higher requirements on the current situation of spatial data,and the spatial data has been updated in a timely and accurate way.The incremental update has become the main way of updating spatial data The In the process of updating spatial data,there may be a spatial conflict between elements due to the large difference between data,the processing method in the process of updating and the visualization of data.Spatial conflict seriously affects the quality of spatial data,so that the data update has lost its meaning,need to detect the existence of space conflict and get effective processing.However,the current efficiency of space conflict detection is relatively low,the degree of automation of conflict processing is limited.In view of this,it is of great theoretical and practical value to study the method of spatial conflict detection and processing in incremental updating.As an important part of data updating,spatial conflict detection and processing are of great significance in the process of cartographic generalization.In this paper,the spatial conflict in the incremental updating of road network data is studied,and the investigation rate and detection efficiency are explored in depth.This paper mainly studies the automatic detection of topological conflicts,the processing of topological conflicts and the consistency evaluation of road update data from the spatial data increment update.The main work of this paper and the innovation of the research include:(1)Summarize and analyze the background of the spatial conflict detection and processing of incremental updating and the current situation of research at home and abroad.Through in-depth analysis of the process of incremental updating of spatial data and the possible causes of spatial conflict in the process of updating,the spatial conflict in the update only occurs in the neighborhood of the change information.According to the characteristics of the spatial conflict in the incremental update,the corresponding detection model is constructed,which lays the theoretical foundation for the detection,processing and consistency detection of the subsequent road network data topology conflict.(2)Research on road network topology conflict detection method.Firstly,the topological relations of road network data and the topology conflict in the update operation are analyzed.Based on the actual requirements of topology conflict detection,a suitable topological relation expression model and topology conflict expression model are established.Secondly,in order to improve the topology of road data,the proposed method is based on the method of fast indexing of the grid,and the topological conflict detection of the elements in the neighborhood of the incremental change information is carried out.Finally,the scientific,practicability and high efficiency of the proposed method are verified by the experimental data.(3)Research on updating data topological consistency detection method.The paper studys the matching relationship between the updating data and the reference data,and the second-order neighborhood scene is used to determine the proximity of the detection section to improve the detection efficiency.The calculation and description method of the relationship between the road segment and its adjacent area is analyzed,the difference between the topological relations of the entities with the same name is calculated by “poor”,and the consistency of the entities with the same name is evaluated.(4)Design and implementation of the road road network space conflict detection and processing experimental system.The system is based on ArcGIS for secondary development.The rapid detection module,processing module and topology consistency detection module of road network topology conflict proposed in this paper are analyzed,and the feasibility of the theory and method is verified...