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Map tile conversion method, system and equipment and storage medium

A technology of map tiles and tiles, which is applied in graphics and image conversion, image data processing, 3D modeling, etc., can solve the problems of cumbersome process and heavy workload, and achieve the effect of improving precision and accurate image data

Active Publication Date: 2021-11-23
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome at least one defect of the above-mentioned prior art, and provides a map tile conversion method, system, device and storage medium for solving the current method of converting tile data of the WGS84 coordinate system into a Mercator projection. The problem of large volume and cumbersome process

Method used

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  • Map tile conversion method, system and equipment and storage medium
  • Map tile conversion method, system and equipment and storage medium
  • Map tile conversion method, system and equipment and storage medium

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Embodiment 2

[0138] Based on the same idea as the map tile conversion method provided in Embodiment 1, such as Figure 9 As shown, this embodiment provides a map tile conversion system, including:

[0139] The longitude and latitude conversion module 100 is used to determine the arrangement of each tile in each level of tiles in the Mercator projection according to the latitude and longitude range of each level of tiles of the map tiles in the WGS84 coordinate system;

[0140] A blank carrier creation module 200, configured to create a corresponding blank data carrier for each tile in the Mercator projection;

[0141] The blank carrier data processing module 300 is used to determine the XY coordinate range of each blank data carrier in the Mercator projection according to the arrangement of each tile in the Mercator projection; The XY coordinate range of the blank data carrier in the Mercator projection determines the tiles corresponding to all the blank data carriers in the map tiles in ...

Embodiment 3

[0159] Based on the same idea as the previous embodiment, this embodiment also provides a computer device, including a memory and a processor, the memory stores a computer program, and the processor implements the map described in Embodiment 1 when executing the computer program The tile conversion method has corresponding functions and beneficial effects.

Embodiment 4

[0161] Based on the same idea as the foregoing embodiment, this embodiment also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the map tile conversion method described in Embodiment 1 is implemented, It has corresponding functions and beneficial effects.

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Abstract

The invention provides a map tile conversion method, system and device and a storage medium. The method comprises the following steps: determining the arrangement of each tile in each level of tiles in Mercator projection according to the longitude and latitude range of each level of tiles of map tiles in a WGS84 coordinate system; creating a blank data carrier corresponding to each tile in the Mercator projection; determining an XY coordinate range of each blank data carrier in the Mercator projection according to the arrangement of each tile in the Mercator projection; according to the XY coordinate range of all blank data carriers in the Mercator projection, determining tiles corresponding to the blank data carriers in map tiles in the WGS84 coordinate system; and copying the determined image data in the corresponding tile to a blank data carrier, wherein the blank data carriers of all copied image data form the map tile under the Mercator projection after conversion. The method does not need vector data of a WGS coordinate system, and does not need to convert vector data of a WGS84 coordinate system into vector data of a Mercator coordinate system and re-layer dicing and image cutting.

Description

technical field [0001] The present invention relates to the field of map tile data processing, and more specifically, to a map tile conversion method, system, device and storage medium. Background technique [0002] In map applications, map tiles are one of the common map data. It is multi-level image data generated by cutting vector data or raster data according to a certain coordinate system. Among them, the WGS84 coordinate system and the Mercator projection are the two most commonly used coordinate systems. WGS84 (World Geodetic System 1984) is an internationally adopted geocentric coordinate system. The Z-axis of the coordinate system points to the direction of the protocol earth pole (CTP) defined by BIH (International Time Service Agency) 1984.0, the X-axis points to the intersection of the zero meridian plane of BIH 1984.0 and the CTP equator, and the Y-axis is perpendicular to the Z-axis and X-axis to form the right hand Coordinate system, known as the 1984 World G...

Claims

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Application Information

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IPC IPC(8): G06T17/05G06T3/00
CPCG06T17/05G06T3/073
Inventor 陈泓坤
Owner GUANGDONG VTRON TECH CO LTD
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