Organization and management method for space-time map tile data

Abstract

The invention discloses an organization and management method for space-time map tile data. The method includes the steps that parameter information of an original image is set or read, wherein the parameter information includes the tile hierarchy, start row number, start column number, terminal row number, terminal line number, shooting time, spatial range, proportional scale, map output format, tangent graph start and terminal point coordinates and version information in a pyramid model; each layer of image in the pyramid model is corrected; a database model is established with the tile hierarchy, shooting time and spatial range as the index; the parameter information of all the layers of tiles is correspondingly stored, and a time node mirror image version is established. According to the method, the map cutting scheme and data structure of an existing map cutting tool are expanded and optimized, the process of space-time electronic map production and incremental updating is constructed, the working efficiency of tile production, updating and issuing is improved, the server resource consumption and cost are effectively reduced, the requirement of redundant data for a large disk space is lowered, and the method is compatible with an international standard format and a mainstream tile generation tool.

Description

technical field [0001] The invention relates to the technical field of electronic maps, in particular to a method for organizing and managing spatio-temporal map tile data. Background technique [0002] With the development of earth observation technology and the accumulation and refinement of remote sensing image data, the value of fully mining massive image data is increasing, and users' demand for electronic maps is becoming stronger and stronger. Tiantu, ArcGIS Service, Geo Service, SuperMapiService) are all composed of image tile data released at different times through multiple services, and they do not support seamless incremental update of tiles, resulting in the existence of access tiles provided The historical version is limited, the server stores a large amount of repeated data, and the integration with the business is not close enough. [0003] In the prior art, for example, the patent "Multi-temporal tile data set organization and run-length coding indexing met...

AI Technical Summary

Problems solved by technology

However, it needs to fill in the tile metadata separately, and the starting position of the slice unit must be exactly the same, which is not compatible with the international standard format; when the map ranges of multiple tile datasets are different, there are certain levels between the map tile datasets There are gaps; it is not compatible with mainstream tile generation tools and does not support mainstream tile formats

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