Video monitoring method for preventing gathering of people

Abstract

The invention discloses a video monitoring method for preventing the gathering of people, and belongs to the technical field of image processing. The method is applied to video monitoring for preventing the gathering of the people in special places such as drug rehabilitation places, prisons and the like. The method comprises the following steps of: 1) acquiring a video monitoring image; 2) determining the background of a current frame; 3) calculating and binarizing a differential image between the current frame and the background of the current frame; 4) morphologically processing the binarized differential image, and extracting moving objects; 5) determining the positions, sizes and geometric center positions of the moving objects; and 6) calculating and judging whether a distance between the geometric centers of any two moving objects is less than a distance threshold value L or not, and transmitting an early warning signal if the distance between the geometric centers of any two moving objects is less than the distance threshold value L. By the method, the video monitoring is performed on places to be prevented from the gathering of the people, and automatic detection and judgment in the gathering conditions of the people are realized by a computer image processing technology, so the shortcomings of judgment made by the subjective experiences of users are overcome, and early warning accuracy and the efficiency of video monitoring workers can be improved at the same time.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to a video monitoring method for preventing people from gathering in special occasions (such as drug rehabilitation centers, prisons, etc.). Background technique [0002] In some special occasions (such as drug rehabilitation centers, prisons, etc.), people gather quite frequently. During the gathering process, drug addicts or criminals are likely to discuss how to end the current situation because they cannot bear long-term detention. In the situation of restricted freedom, if these personnel are not monitored, it is easy to have some unexpected accidents. [0003] Therefore, effective monitoring and management of the crowd in this special occasion is an urgent problem to be solved. At present, the main video method is still in the stage of manual monitoring. Although video monitoring has already been realized, whether a gathering of people occurs mainly depends on the subj...

AI Technical Summary

Problems solved by technology

At present, the main video method is still in the stage of manual monitoring. Although video monitoring has already been realized, it is mainly judged by the subjective experience of the monitoring staff on duty whether there is a gathering of people.

This manual method has the following disadvantages: 1) it is difficult to withstand long hours of heavy work and the eyes are prone to fatigue; 2) it is mainly judged by the subjective experience of the monitoring personnel, which is prone to misjudgment

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