Method for acquiring coordinate of interest points

Abstract

The invention provides a method for acquiring a coordinate of interest points, comprising the following steps: acquiring gate address of to-be-processed interest point, and ordering according to gate address number; combining some gate addresses according to the acquired gate address ordering list, in order to obtain the gate-address location list; establishing an electronic map with junction location gate addresses; arranging locations of gate-address location list into the established electronic map with junction location gate addresses according to the gate address numbers; obtaining the location coordinate according to the location positioned in the electronic map; using the coordinate as the coordinate of all interest points in the location. The method greatly saves the acquiring cost of the interest points coordinate, overcomes the defect that the coordinates of many interest points can not be acquired due to incomplete known gate addresses in the existing calculating method of gate addresses, reduces the situation that the relative position between the interest point and key landmark is wrong, and is the method with high success rate and accuracy rate for acquiring the coordinate of interest points.

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 a map data system for public information services, and specifically refers to a method for obtaining coordinates of points of interest for public information services. 【Background technique】 [0002] Point Of Interest (POI) is a kind of map data and has a very important status. The point of interest usually includes the name of the point of interest, the category of the point of interest (such as catering, entertainment, school, communal facilities, etc.), and interest. Point coordinates, brief introduction, etc. Through POI, users can use it as a destination to navigate to the POI, which brings great convenience to users and is also a very important data foundation in navigation applications. [0003] For commercialized POI, because the number is very large and the collection of POI data may encounter limitations, traditional POI collectio...

AI Technical Summary

Problems solved by technology

Since the location of the door at the intersection cannot be known in advance, it is possible to calculate a point that is originally on the west of the intersection as being on the east of the intersection. Although the distance error is less than 150 meters, this error is unacceptable to users

[0014] From the above analysis, it can be seen that due to the high labor cost and maintenance cost of the field collection method, data production companies that produce point information to meet the public point information service cannot adopt this method at all; and the gate location calculation method Due to the high requirements on the comprehensiveness and accuracy of the door address information, and the lack of a way to obtain comprehensive and accurate information on the door address, it is difficult to obtain comprehensive and accurate coordinates of interest points by this method

The above two methods are not able to obtain the coordinates of massive points and their relative relationship with key markers. Generally speaking, both methods have relatively large shortcomings.

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