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A method and device for generating and displaying an electronic map

An electronic map and map technology, which is applied to the generation of 2D images, image data processing, geographic information databases, etc., can solve the problems of generating a large number of road sections and reducing the query efficiency of route planning, so as to simplify the hierarchical structure and improve the query efficiency. Effect

Active Publication Date: 2020-02-07
ALIBABA (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The embodiment of the present invention provides a method and device for generating and displaying an electronic map, which is used to solve the problem that the existing road storage method will generate a large number of road sections, which will lead to a decrease in query efficiency in route planning

Method used

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  • A method and device for generating and displaying an electronic map
  • A method and device for generating and displaying an electronic map
  • A method and device for generating and displaying an electronic map

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Embodiment Construction

[0049] Embodiments of the present invention provide a method and device for generating and displaying an electronic map. Since it is organized according to the tile where the starting point of the road is located, that is, the road information in the tile of the tile where the starting point of the road is located The data information of the road is stored in the table. Therefore, when performing operations on the topological structure of the road, the information in the road information table in the tile of the tile can be directly used. Compared with the existing road storage method, a large number of In terms of road sections, which lead to a decrease in query efficiency in path planning, the query efficiency is improved, and, since the cross-tile road index is not required to represent the connection relationship between different road sections in the same road, the organization of the road is simplified Hierarchy of relationships.

[0050] The specific implementation mann...

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Abstract

A method and apparatus for generating and displaying an electronic map, used for solving the problem of the reduced efficiency of looking up a route plan caused by the large amount of road sections produced when using existing road storage methods. The method comprises: determining the starting point of a road (L1) on the basis of shape point information of said road (L1); and storing the data information of the road (L1) in a tile interior road information table of a tile at the starting point of the road (L1), the data information of the road (L1) at least comprising the shape point information of said road (L1).

Description

technical field [0001] The invention relates to the technical field of electronic map data, in particular to a method and device for generating and displaying an electronic map. Background technique [0002] Satellite positioning technology and mobile Internet technology have been widely used, which has also driven the development of navigation and location service related industries. At present, the navigation software is developing in the direction of intelligence, convenience, and personalization, and the most important element in the information of the navigation map is the road, so a key point in the navigation application is the organization of the road information. [0003] Since the main requirement of navigation applications for roads is fast and accurate retrieval, the current method of organizing road information is mainly to establish spatial indexes. The so-called spatial index refers to a data structure arranged in a certain order according to the position and...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29G06F40/00
CPCG01C21/36G06F17/00G06F40/00G06T11/00
Inventor 贾双成陈岳叶旻
Owner ALIBABA (CHINA) CO LTD