Network map service publication method and system

Abstract

The invention relates to a network map service publication method and system. The method includes: creating tile map sources at a server end, compiling a tile cache configuration file, defining the storage mode as hybrid loose cache, applying JPEG formats to the tiles in the middle of a cache area, and applying PNG formats to the tiles on the periphery of the cache area; changing the name suffixes of the generated tiles into PNG so as to unify data types, and changing the tile format parameter in the tile cache configuration file into PNG; publishing a map service, and providing a TMS and WMTS access interface to a client. The method has the advantages that hybrid slicing technology is used, advantages of PNG and JPEG are fully utilized, the hybrid tiles of high-resolution images are enabled to be fast accessed in the Internet through the TMS and WMTS interface, and tiles on the periphery of the cache area can be well displayed when the images are overlaid with other map resources.

Description

technical field [0001] The present invention relates to the technical field of map services, in particular to a method and system for publishing network map services. Background technique [0002] With the popularity of Internet electronic maps and the development of high-resolution images, electronic maps with high-resolution images have gradually entered the eyes of the public. Affected by Internet bandwidth and large image data, image electronic maps currently on the Internet mostly use tile pyramids to organize data, and provide external access interfaces through TMS or WMTS (Tile Map Web Service). [0003] The tiles of the image tile pyramid mostly use PNG or JPEG format. For high-resolution images, if the PNG format is used, the average size of a single tile can reach more than 50kb. In this way, in the network environment, especially in the mobile network environment Under the circumstances, the waiting time for image display is long, and the network data traffic c...

AI Technical Summary

Problems solved by technology

[0004] However, since the tiles in JPEG format do not have the property of transparent display, when a regional high-resolution image is superimposed on a map area with a high zoom ratio, the data-missing areas in the edge tiles of the high-resolution image will be covered. The map on the lower layer is not conducive to users to view the map, and the visual effect is not good, which obviously does not meet people's requirements

Images