
With the rapid and rapid expansion of the data volume of video surveillance at an alarming rate, the mass data information formed by it has already surpassed the scope of effective manpower processing. The emergence of intelligent video surveillance technology has largely solved this problem. This technology is an effective means to filter out a large amount of redundant data. At present, it is the image processing technology most concerned by the security industry.
As an important part of the security field, video surveillance systems have been widely used in community security monitoring, fire monitoring, traffic violations, flow control, military, and banking, shopping malls, subways, airports and other public places in the prevention of security, and will have More extensive application prospects. However, existing video surveillance systems usually implement security protection through personnel monitoring and video recording. Actually, they cannot actively and effectively protect security. Especially when there are too many monitoring points, personnel monitoring cannot take care of all monitoring scenarios at the same time. It is difficult to ensure that all surveillance scenes can be accurately and efficiently monitored within 24 hours. In addition, "passive video recording" can usually only be played back after the occurrence of an "event". To restore, on the other hand, the efficiency of the method of collecting evidence by manual playback video is very low.
Because of its method of using computer vision, intelligent video surveillance, through the automatic analysis of the image sequence recorded by the camera, requires no human intervention to locate, identify, and track the targets in the dynamic scene. On the analysis and judgment of the target's behavior, so as to be able to complete the day-to-day management and can react in an abnormal situation in time, so in the security field favored.
In the field of security, intelligent video surveillance technology in the application process and the previous monitoring technology are essentially different, and graphically speaking, the biggest feature of this technology is to make the past visual discovery monitoring evolved to a fully automated control and monitoring, its advantages More obvious, for example:
Group behavior analysis: Including the analysis of normal behaviors and abnormal behaviors of crowds, traffic flows, etc., can analyze the normal behaviors of the groups in the scene, such as counting the number of people or vehicles crossing the entrance or designated area, traffic flow of the expressway, and identifying the crowd. The overall movement characteristics, including speed, direction, etc.; can also analyze and determine the abnormal behavior of groups in the scene, such as detecting, classifying, tracking and recording passing pedestrians, vehicles and other suspicious objects, and judging whether there are illegal vehicles parked on the highway. Whether there is a faulty vehicle, whether there are pedestrians and vehicles in the restricted area for prolonged periods of time, stoppages, retrograde behaviors, etc., and whether there are any abnormal behaviors such as crowd gathering, running, and fighting in public places.
Intrusion Detection and Moving Target Tracking: Detects suspicious targets that enter the surveillance area abnormally and can identify single or multiple target movements (such as direction of movement, speed of movement, etc.). After the suspicious object is detected, a control instruction is sent to cause the camera to automatically track the target. After the object exceeds the monitoring range of the camera, the adjacent camera is automatically notified to work cooperatively, and the tracking is continued and an alarm signal is issued.
As China's security industry develops faster and faster, the market scale continues to expand, and more and more companies are engaged in the security industry. Intelligent video surveillance technology with advanced intelligent analysis not only greatly enhances the ability to monitor, reduces unsafe hidden dangers, but also saves manpower and material resources, reduces costs, and will be greatly developed and applied in the security industry.
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