On-line Mapping Method Of Crowd Sourcing Geographic Data

With the development of information technology,mobile Internet,cloud computing and other technologies have deeply affected all aspects of society,coming the huge amount of data produced in recent years.In this context,many experts and scholars on the Crowd Sourcing Geographic Data launched a study.Crowd Sourcing Geographic Data is a large number of non-professional professionals to provide open-source data,not only has a richer data sources,but also has the spatial attribute,contains the enormous development potential and the application value.This paper mainly focus on the problem of single data source and poor timeliness in the traditional online cartography system.Through the research on the Crowd Sourcing Geographic Data,the features of abundant data source and fast updating are made to make up for the shortcomings of traditional methods to assist online mapping methods.First of all,researched the characteristics and application scenes of the Crowd Sourcing Geographic Data in theory.In view of the data standard is not unified,the classification system heterogeneity and so on,Using the Crowd Sourcing Geographic Data fusion technology puts forward the mode of the public source map based on the data sharing and online map making of the Crowd Sourcing Geographic Data,and designed the system implementation.Second,researched the key technologies in the realization of the geo-data system,including geo-data fusion related technologies:standard data format and classification system,automatic access to all source data,data standardization,the fusion method of spatial information and attribute information.Using the technology of web crawler and automatic processing,to automatic processing and storage of the Crowd Sourcing Geographic Data is realized and the storage and updating.Research on the characteristics of the Crowd Sourcing Geographic Data and realize the method of data symbolization.Finally,designed the system by using scientific technical framework,Then using modular construction,coding the development of the online cartography system.A good application result has been obtained through verification in Chongqing City as the experimental area.