Method for sampling and fuzzy positioning interest point in map system

Abstract

The invention relates to a method for collecting and locating interesting position in the map system, wherein the collection method includes that determining and storing the first road position information adjacent to the interesting point, determining and storing the position information of a crossroad P0 around the interesting point, position information of another point Pn on the first road adjacent to the interesting point, determining and storing the folded line distance between the interesting point and crossroad P0; the locating method includes that obtaining the coordinate of the crossroad P0 around the interesting point, determining and storing the coordinates of another point Pn, key points Pi and Pi-1 selected between P0 and Pn on the first road around the interesting point, determining and storing the point coordinate satisfied l=d-Di-1 on the line segment Pi-1Pi and displaying on the map. The collection and location method fit for commercial operation with quick speed, high working efficiency, low costs can be applied widely.

Description

technical field [0001] The invention relates to the field of map data systems, in particular to the field of point of interest navigation in the map data system, and specifically refers to a method for collecting and fuzzy positioning of points of interest in the map system. Background technique [0002] POI Point Of Interest (POI Point Of Interest) is a kind of map data and plays a very important role. The point of interest usually includes the name of the point of interest, the category of the point of interest (such as catering, school, public facilities, etc.), the geographical coordinates of the point of interest, and a brief introduction. Through POI, users can use it as a destination and navigate to the POI, which brings great convenience to users and is also a very important data basis in navigation applications. [0003] According to the classification of POI, it also determines whether POI needs precise location. For example, non-commercial POIs such as schools, ...

AI Technical Summary

Problems solved by technology

In this way, it is very difficult to obtain the position of POI

[0008] (2) Collecting a huge number of POIs costs a lot

Because it is accurate POI location information, professional GPS field positioning is usually used to collect location information. When the number of POIs is very large, the time, manpower, and financial resources spent on collecting POI location information are proportional to the number. All costs will also be very huge

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