Method for obtaining target track complete graph of optimal map hierarchy

Abstract

The invention relates to a method for obtaining a target track complete graph of an optimal map hierarchy. The method comprises the steps that a front end sends the size of a map container of a current page to a background; the background divides the complete target track into n map containers by taking the sizes of the map containers as minimum units, obtains n central points, forms a central point array by the central points according to a certain sequence, and returns the central point array to the front end; after the front end acquires n picture addresses according to the central point array, the n picture addresses are transmitted to a background in an array form; and the background calls the corresponding original pictures according to the n picture addresses, performs picture synthesis according to the sequence, and finally generates a complete target trajectory large picture of the optimal map hierarchy. According to the method, corresponding map hierarchies can be selected according to needs, the complete suspected target trajectory diagram is exported, the complete trajectory of suspected target movement can be displayed, street information corresponding to the trajectory can be clearly seen, and target analysis and research and judgment in video tracking are facilitated.

Description

technical field [0001] The invention relates to the tracking of target activity trajectories, specifically a method for obtaining a complete map of target trajectories at an optimal map level, and belongs to the technical field of video processing. Background technique [0002] In the process of video investigation, according to the order of capture time in the surveillance video, the corresponding crime and escape trajectory of each suspected target can be drawn on the map, as shown in the attached figure 1 As shown, if the map level is at level 11, the complete trajectory of the suspect, the disadvantage of this display method is that the corresponding street information cannot be seen clearly, but after the map level is placed at level 19, the corresponding street information can be seen clearly. streets, but the complete trajectory of the suspected target cannot be seen, as shown in the attached figure 2 As shown, these two display methods restrict the investigators' a...

AI Technical Summary

Problems solved by technology

[0002] In the process of video investigation, according to the order of capture time in the surveillance video, the corresponding crime and escape trajectory of each suspected target can be drawn on the map, as shown in the attached figure 1 As shown, if the map level is at level 11, the complete trajectory of the suspect, the disadvantage of this display method is that the corresponding street information cannot be seen clearly, but after the map level is placed at level 19, the corresponding street information can be seen clearly. streets, but the complete trajectory of the suspected target cannot be seen, as shown in the attached figure 2 As shown, these two display methods restrict the investigators' analysis and judgment of the trajectory of the suspected target, which is not conducive to the detection of the case

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