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
CN113689562AActive Publication Date: 2021-11-23GUANGDONG VTRON TECH CO LTD
5 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
GUANGDONG VTRON TECH CO LTD
Publication Date
2021-11-23

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More