A signal display method and system based on gis map

Abstract

The invention relates to the field of large-screen mosaic display, in particular to a signal display method and system based on a GIS map. The method is used in a splicing wall, the splicing wall is controlled by a control device, and a GIS electronic map is displayed on the control device, and the method includes the processing steps of the control device, specifically: receiving a marking signal for marking a video point on the map ; Assign a unique geographic identifier to each video point on the map according to the marker signal; associate the video signal corresponding to each video point with the corresponding geographic identifier; if the selection operation of clicking the video point on the map is received, or If the selection operation of selecting the target area on the map is received, the video point is searched in the target area; according to the video point found or the geographical identification of the selected video point, the associated video signal is selected; The associated video signal is called out and controls the video wall to display the called up video signal.

Description

technical field [0001] The invention relates to the field of large-screen mosaic display, in particular to a signal display method and system based on a GIS map. Background technique [0002] At present, video surveillance is widely used in various fields of urban management, including security, traffic police, emergency command and other fields. In some big cities or megacities, the number of surveillance video points can reach tens of thousands or even hundreds of thousands, covering almost every corner of the city. Conventional video surveillance based on a large screen is to drag the required surveillance video into the signal callout and control unit for display; although the number of video surveillance is large, the video display is relatively fixed, it is not convenient to switch signals at will, and the work efficiency is low . [0003] The patent application number CN201110217788.8 discloses a method and device for video monitoring and display based on GIS maps. ...

AI Technical Summary

Problems solved by technology

The first search method needs to pre-allocate each video point with its own number and the name of the location where the video point is installed. During the scheduling process, complex signal names or long lists are presented, which is not easy to use. Convenient, not intuitive, and slow to find

The latter two search methods are prone to miscalculation of the area of ​​the target area, resulting in not being able to select the video point that is really needed, which is inconvenient to use, and the efficiency of scheduling the signal of the video point is greatly reduced.

In addition, in this patent, both the map and the surveillance video are displayed on the video wall, and all operations are directly displayed on the video wall. On the one hand, the map occupies the display space of the video wall, and on the other hand, all operations are performed directly on the video wall. These include the display of GIS maps, the display and search of video points, etc., which will occupy the memory of the video wall, resulting in low efficiency in the search of video points and low display efficiency of the video wall

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