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The so-called intelligent video analysis is based on video surveillance and based on the content of video surveillance, corresponding video analysis is performed. But it is different from simple video surveillance. If you compare video surveillance and intelligent video analysis, the former is to see bad people do bad things and can not take the initiative to call the police, but the need for artificial vision to determine. When the latter sees an action that is not allowed in the setting, it can automatically alarm to remind people of the danger.
About the intelligent alarm, its definition: English called IVS (Intelligent Video System), refers to the computer image visual analysis technology, through the background and the target in the scene is separated and then track the target appearing in the camera scene. According to the video content analysis function, the user can preset different alarm rules in different camera scenes. Once the target has violated the predefined rules in the scene, the system will automatically send an alarm, and the monitoring workstation will automatically pop up alarm information. A warning tone is issued, and the user can click on the alarm information to realize the scene reorganization of the alarm and take related measures.
The above is the definition of intelligent video analysis, then what role can it play in security? First we look at the functional classification of smart video analytics.
Video Analysis
Perimeter intrusion detection, object movement direction detection;
Object movement, stop state change detection;
Object appearance and disappearance detection;
Volume statistics include (person flow, traffic volume statistics);
PTZ automatic tracking system;
Camera intelligent self-test function
The so-called video analysis, its main function is to find objects in the monitoring screen, and detect the motion characteristics of the object. Such as the location of the object relative to the pixel, the direction of movement of the object and the relative speed of the pixel, the shape of the object itself in the picture and its changes.
Video recognition system
Video recognition
Face recognition system;
License Plate Recognition System;
Photo matching system;
Machine vision system on industrial automation.
The main technology of video recognition is to find out the commonness of some pictures in the video in the video picture. For example, a person's face must have two eyes. If we can find a dual purpose location, then we can determine the location and size of the person's face.
Video improvement
Night vision image enhancement processing;
Image stabilization system;
License plate recognition image enhancement system.
The main function of video improvement is to increase the monitorable performance of the video by optimizing some previously invisible, obscure or vibrating images.
In summary, we can know that in the security work, the intelligent video abstract mainly plays the role of timely and accurate automatic early warning, real-time tracking and recognition, and optimized monitoring. Intelligent video summary can not only track and analyze objects according to the motion characteristics of objects, but also can find local commonalities in the screen to measure data, and has recognition systems such as face and license plates. And in the external environment interference, with automatic improvements, so that previously invisible, blurred images become clear, so as to achieve the effect of monitoring and early warning, its role is that the general video surveillance is completely unmatched. In security, its role is reflected not only in the quality of security. In a society that advocates simplicity and convenience, it guarantees the quality of security while also providing the following advantages:
Create a virtual electronic fence, without installing any physical fences, without affecting the appearance of the environment Suitable for large-area surveillance, for early warning of suspicious behavior occurring inside and outside the perimeter Compared to traditional alarm sensors, such as infrared, vibration, electronic fence, ground vibration Sensors, intelligent video analysis can provide greater coverage, without the need for on-site installation, inspection, or gain.
At the same time, the alarm will automatically pop up the video, the user can confirm the wireless network can be used twice, reduce the complexity and cost of network cabling can alarm linkage third-party equipment, deterrence, blocking intrusion, to avoid further damage behavior support PTZ automatic tracking, camera indirect After the force tracking the suspicious target alarm, the video automatically pops up without the need for personnel to monitor the screen in full time.
This is an intelligent video analysis system. It greatly reduces the workload of security personnel, improves the accuracy of work, and strengthens the timeliness of early warnings, so that security personnel can find dangers and solve dangers in the first place. From its birth to application to actual combat, it has always been the leader in security surveillance video surveillance, and is an indispensable killer in the video surveillance family.
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In the current security environment, video surveillance has become an important means of security. From large-scale exhibitions to leaders' gatherings, to small-scale bank monitoring and warehouse security, we can all see the shadow of surveillance cameras. The deteriorating security environment requires security personnel to make quick and accurate judgments and immediately detect dangers and eliminate dangers. This requires security personnel at the remote monitoring level to have a high sense of responsibility and meticulous observation. But when people are not machines, there is always time for slacking. When it comes to security, video surveillance alone is not enough. We must put the surveillance cameras on the brain and let them see what we think. As a result, intelligent video analytics was born.