Method and system for video surveillance

Abstract

The invention discloses a video monitoring method and a system. According to the method and the system, the operation speed and the response speed of the video monitoring system can be increased, the target tracking performance is optimized, and the timeliness of target tracking is improved. The method includes: a second video monitoring device receives coordinates of the current physical positions of a to-be-tracked object sent by a connected first video monitoring device at regular intervals of the preset duration, the visual angle of the first video monitoring device is fixed, the visual angle of the second video monitoring device is adjustable, and the first video monitoring device and the second video monitoring device perform coordinate calibration of the physical positions by employing the same coordinate calibration method; and the second video monitoring device determines the to-be-tracked object from two or more moving objects according to the received coordinates of the more than one current physical positions, and locks and tracks the to-be-tracked object.

Description

technical field [0001] The invention relates to the technical field of video monitoring, in particular to a video monitoring method and system. Background technique [0002] At present, in terms of video surveillance and tracking technology, in order to avoid the problem that a single video surveillance device tracks the target and easily leads to the narrowing of the monitoring range, two or more video surveillance devices have been linked to realize video surveillance and target tracking. [0003] In a system where multi-device linkage is used for video surveillance and tracking, multiple video surveillance devices generally have a master-slave relationship. [0004] The advantage of multi-device linkage with a master-slave relationship is that the control method is simple. However, as the cost of video surveillance equipment decreases and the penetration rate of intelligent analysis functions increases, the disadvantages of multi-device linkage with a simple master-slave ...

AI Technical Summary

Problems solved by technology

[0004] The advantage of multi-device linkage with a master-slave relationship is that the control method is simple. However, as the cost of video surveillance equipment decreases and the penetration rate of intelligent analysis functions increases, the disadvantages of multi-device linkage with a simple master-slave relationship are also highlighted.

The multi-device linkage of the master-slave relationship mainly depends on the calculation and processing of the master video surveillance device. Every action from the video surveillance device to find the target to the precise positioning needs to be carried out after the master video surveillance device indicates. The determination of the tracking target and the entire tracking The analysis of the movement of the tracking target during the process is carried out on the main device side. Suppose that during the analysis of the movement of the tracking target by the main video surveillance device, the tracking target quickly moves out of the monitoring screen of the main video surveillance device. At this time, the main device is still If the calculation of motion trajectory, coordinates, etc. has not been completed, it is impossible to instruct follow-up tracking from the video surveillance equipment

[0005] It can be seen that the existing video surveillance system is limited by the computing power of the main video surveillance equipment and the linkage response time between the systems, which reduces the response speed of the video surveillance system and makes it difficult to achieve high real-time tracking

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