Electronic map panorama acquisition method and system

Abstract

The invention discloses an electronic map panorama acquisition method. The method is applied to an electronic map panorama acquisition system comprising a client and a server. The method comprises the following steps that: the client acquires a screenshot area selected by a user in an electronic map display range, and acquires a resolution of the screenshot area input by the user; the client transmits the resolution and map data of a vector form in the screenshot area read from a client side to the server; the server determines a map hierarchy corresponding to the resolution, and splices a base map belonging to the map hierarchy in the screenshot area; the server draws map information on the base map according to the map data; and the server transmits an address of a drawn screenshot to the client in order that the client downloads the drawn screenshot according to the screenshot address.

Description

technical field [0001] The invention relates to the technical field of electronic maps, in particular to a method and system for obtaining a panorama of an electronic map. Background technique [0002] An electronic map is a digital map, which is a map that is stored and consulted digitally using computer technology. Electronic maps are stored on media such as computer hard disks, floppy disks, CDs, or magnetic tapes. The content of the map is represented by numbers, and these numbers need to be displayed, read, retrieved, and analyzed by special computer software. The method of storing information in electronic maps generally uses vector image storage. The scale of the map can be enlarged, reduced or rotated without affecting the display effect. In the early days, bitmap storage was used, and the scale of the map cannot be enlarged or reduced. Modern electronic map software generally uses geographical information systems to store and transmit map data, and other informatio...

AI Technical Summary

Problems solved by technology

[0003] In electronic map applications, screenshot is a commonly used function. It can download the image of the current screen range, which is convenient for users to view offline. However, the screenshot function of electronic map is different from other software screenshot methods, because Map information, POI (Point of Interest, point of interest) information, driving route information, etc. are all drawn by the server after real-time query. When the user drags and drops the map, these information will also be updated in real time, loaded in real time, and generated after recalculation. So, in theory, users cannot get screenshots outside the screen range

[0004] The screenshot function of existing map websites, such as Baidu map and Gaode map, etc., captures the image of the current screen through the system program interface, and then cuts it to get the current screenshot. High-resolution screenshots can only be obtained by manually taking multiple screenshots and then stitching them together

It can be seen that the images captured by the existing screen capture function will be limited by the resolution of the monitor, and users cannot obtain images exceeding the current monitor resolution, that is, they cannot capture images exceeding the screen resolution requirements, and obtain more accurate images through artificial splicing. Methods for high-resolution images are time-consuming, expensive, and error-prone

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