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Error correction method and devicefor POI positions

An error correction method and location information technology, applied in the field of map processing, can solve problems such as low accuracy, mismatch, inaccurate text, etc., and achieve the effect of improving accuracy and high accuracy

Pending Publication Date: 2020-07-14
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the word segmentation cannot truly reflect the text information of the POI to a certain extent. When matching the text in the electronic map database based on the word segmentation, there will be cases of mismatch or matching deviation, resulting in the locked POI corresponding to the electronic map database. The text of the text is inaccurate, making the position of the POI in the electronic map inaccurate, resulting in a low accuracy of error correction for the position of the POI

Method used

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  • Error correction method and devicefor POI positions
  • Error correction method and devicefor POI positions
  • Error correction method and devicefor POI positions

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Embodiment Construction

[0029] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0030] Such as figure 1 As shown, the embodiment of the present invention provides a POI position error correction method, the method mainly includes:

[0031] 101. Divide the preset geographic region into several geographic grids of different levels layer by layer with the preset number of layers.

[0032] Specifically, the geographical area may be at least a partial area in the electronic map. The scope covered by a geographica...

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Abstract

The invention discloses an error correction method and device for POI positions, relates to the technical field of map processing, and mainly aims to improve the accuracy of POI position error correction. According to the main technical scheme, the method comprises the steps: dividing a preset geographic area into a plurality of geographic grids of different levels layer by layer according to thepreset number of levels; determining a classification label of each geographic grid based on the position information of each geographic grid; establishing a text classification model according to theclassification label of each geographic grid and the text information; determining a target geographic grid corresponding to the POI based on the text classification model and the text information ofthe POI; and performing error correction on the position of the POI based on the target geographic grid.

Description

technical field [0001] The invention relates to the technical field of map processing, in particular to an error correction method and device for a POI position. Background technique [0002] Electronic maps have become a very important travel tool for people because of their functions such as route planning, destination query, and location query. Electronic map data includes a large number of POIs (Points of Interest). These POIs usually reflect geographical entities such as shops, scenic spots, buildings, and roads in real society. These POIs can be used to support route planning, query destinations, etc. . In the post-maintenance of the electronic map, in order to ensure that the position of the POI is correct, it is necessary to correct the position of the POI, so that the POI in the electronic map can reflect the location of the real geographical entity. [0003] At present, when correcting the POI location, the text information such as the name / address of the POI is ...

Claims

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Application Information

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IPC IPC(8): G01C21/36
CPCG01C21/3679
Inventor 周江
Owner ALIBABA GRP HLDG LTD
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