A tile map update method and system

A technology of tile map and update method, which is applied in the direction of file system, file/folder operation, file metadata retrieval, etc. It can solve the problems of CPU and IO resource consumption, affecting map update efficiency, etc., and solves the problem of consuming too many resources , The effect of improving the update efficiency

Active Publication Date: 2022-04-26
SUZHOU SUPERENGINE FOR GRAPHICS & IMASOFTWARE TECH DEV
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Problems solved by technology

[0003] As time continues to accumulate, there will be more and more corresponding image files in the same area, and more and more files are used to generate a specific map tile. The generation of a map tile may require hundreds of Thousands or even more remote sensing image files with cover in the same area will consume a lot of CPU and IO resources in order to generate corresponding map tiles, which will affect the map update efficiency

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  • A tile map update method and system
  • A tile map update method and system
  • A tile map update method and system

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] The terms "first" and "second" in the specification and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus comprising a series of steps or units is not defined by listed steps or u...

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Abstract

The invention discloses a method and system for updating a tile map. According to a preset reference slice file, a target remote sensing image file is generated into a tile file; the spatial range of the tile map of the tile file is calculated and the tile corresponding to the reference file The intersection of the spatial ranges of the map is used to obtain the spatial range to be updated; based on the spatial range, the tile information corresponding to the tile to be updated in the reference slice file is obtained; according to the tile information, the tile map is updated to obtain the updated tile map. In the present invention, the newly released remote sensing image file is compared with the reference slice file, and then the tile map is updated based on the comparison area, which can solve the problem of consuming too many resources in the prior art to generate a large number of tile files , thereby improving the tile map update efficiency.

Description

technical field [0001] The present invention relates to the technical field of map making, in particular to a tile map updating method and system. Background technique [0002] The rendered pictures are cut into small pictures according to certain rules and scales. These pictures are called tiles. The tile map technology is the main way to solve Internet map services. There is such a type in the browsed tile map service: the presentation content of the tile map service is the overlay effect of time series remote sensing images in a certain area, the latest data is always on the top layer, but the latest data may not be all In the coverage area, where there is no latest data, the existing latest data is presented (from the current to the forward, and the latest data is covered). The traditional solution is to organize the remote sensing images in time series every time the service is updated for tile map service production. [0003] As time continues to accumulate, there wi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/16G06F16/14
CPCG06F16/16G06F16/148
Inventor 刘绪学李刚殷雄
Owner SUZHOU SUPERENGINE FOR GRAPHICS & IMASOFTWARE TECH DEV
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