Practical Research On Updating Geographic Information Based On Universal Sources POI Data

The Geographic Information Public Service platform is an open service platform that provides geographic information service and resource sharing,and is a website that provides authoritative,credible and unified Internet Geographic Information service for government,enterprises and the public.Among them,geographic information can provide information reference and application services for urban development,disaster prevention and mitigation,transportation,environmental management and many other fields,which is an important strategic resource of the country.The acquisition and renewal of efficient and accurate geographic information is also the focus of current research.At present,with the rapid development of the Internet and the advent of the Big Data era,the method of updating the traditional Geographic Information Public Service platform has been difficult to meet people's requirements for a higher current situation of geographic data.In view of this,this paper proposes to update the geographic information based on the Internet POI information from different sources,and combined with the actual needs.The application of the research results to the data update of the Geographic Information Public service platform has achieved good results and verified the feasibility of updating the geographic Information Public Service platform of the heterogeneous Internet.The main results of the study include:(1)Establishment of Geographic Information Public Service platform and Internet POI Classification systemFirstly,this paper introduces the geographic Information public Service platform,analyzes the element classification system of the Geographic Information Public Service platform and its relationship with POI,;secondly introduces the POI profile,summarizes the POI characteristics and classification system of different sources of internet,and puts forward the key research results of this paper,which is a platform POI classification system based on Multi-source POI updating Geographic Information Public Service platform.(2)Summary of General methods for obtaining and updating POI from all sourcesThis paper studies the method of integrated processing and updating of source POI shallow layer and deep acquisition and crowdsourcing POI.The POI Data is obtained by thedifferent methods of shallow and deep acquisition of multi-source POI,and the POI incremental dataset can be obtained as the data support of information update after a series of processing,such as projection transformation coordinate correction,POI object matching and POI type mapping of the same name.(3)Experimental results and conclusionsTaking Guangdong Province as the experimental area,the method of updating geographic information public service platform based on crowdsource POI data is used.The POI data obtained from different sources of the Internet and the inventory data of the geographic information public service platform are analyzed and compared with the database by the method of human-computer interaction,and the incremental data are extracted and the platform data is updated.The updated data are visually processed.The experimental results show that the POI data obtained from different sources has good availability and can provide data support for the data updating of geographic information public service platform.It is verified that the Internet can obtain POI data update geographic information public service platform.Based on the analysis of different Internet data,this paper selects the official website,the third party large website and the public map service website as the reference data source of the data update of the geographic information public service platform,and puts forward a set of the POI classification system of the geographic information public service platform in combination with the actual needs.This paper summarizes the steps and methods of source POI acquisition and incremental extraction,as well as the general method of source POI update,and studies the experiment in Guangdong Province as a test area,and has achieved good results.The research proves the feasibility of updating the geographic information public service platform based on the source POI data,which effectively solves the problems such as high data cost,heavy workload,low efficiency and effective effect in the process of geographic information collection;it has important data support and technical support for improving the data timeliness,current situation and topic richness of the geographic information public service platform.