An embodiment of the present invention provides a method for storing trajectory. The method includes: mapping, based on a plurality of positions on a trajectory of an entity, the trajectory to at least one road segment in a road network; identifying an entry point and an exit point of one of the road segments, wherein the entry point is a point where the entity starts traveling along the road segment, and the exit point is a point where the entity ends traveling along the road segment; and storing data related to at least one of the entry point and the exit point, to store the road segment as a part of information of the trajectory.


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    Title :

    Compressing trajectory data of a navigation device


    Contributors:
    DUAN NING (author) / WANG ZHI HU (author) / JI PENG (author) / ZHU JUN (author)

    Publication date :

    2017-08-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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