System and method for generating electronic chart pictures capable of being seamlessly spliced

Abstract

The invention discloses a system and a method for generating electronic chart pictures capable of being seamlessly spliced, wherein the system mainly comprises an electronic chart data read module, a proportion level display module, a preprocessing module, a chart object, a display content filtering strategy setting module, an electronic chart picture display and render module and an electronic chart picture storage module, whereas in an implement method, a chart picture proportional scale can be set by utilizing the proportion level display module, and the chart object and the content thereof can be selectively displayed by utilizing the chart object and the display content filtering strategy setting module thereof, thereby enabling a generated picture to be simpler; the geographical coverage range of all electronic chart pictures capable of being seamlessly spliced can be calculated by utilizing the preprocessing module; and attractive electronic chart pictures can be generated by utilizing the electronic chart picture display and render module. Based on the characteristics, the generated electronic chart pictures can be seamlessly spliced and are simple and attractive by utilizing the system and the method.

Description

Technical field: [0001] The invention relates to the technical field of marine geographic information, in particular to a system and method capable of generating seamlessly spliced ​​electronic chart pictures. Background technique: [0002] WebGIS based on image (Tile) technology (such as Google Map, Baidu Map, etc.) has been widely used in recent years due to its user-friendliness. Its technical feature is to trade space for time to increase the speed at which the client can display the map. Specifically, the geographic data is used to draw electronic maps at different scales, and then the drawn maps are cut into many small electronic map pictures (such as 256px×256px) with equal sides and seamless stitching. When a user accesses a map of a certain area, only a small amount of electronic map small pictures are downloaded from the server, and then they are seamlessly stitched together and displayed to the user for reference. Therefore, each time the user accesses the elect...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that none of the existing tools for generating electronic map pictures can be used to generate electronic chart pictures, and a system capable of seamlessly decomposing electronic charts, and the system realizes seamless electronic charts seam decomposition method

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