Intelligent analysis into the development of security industry

With the technology upgrade of the security industry, intelligent video analysis technology is one of the tools for market application. The manufacturers compete vigorously for R&D and improvement as the core technology for future development. Intelligent analysis technology has been gradually tried out in many fields. However, it has to be said that the current intelligent analysis technology with serious homogeneity and immaturity is underwhelmed by the needs of the gradually subdivided application industry.

However, for video intelligent analysis technology, its future market value still depends on high-definition monitoring. As computer technology continues to improve and user needs diversify, people demand real-time alarms on suspicious things to be realized on the basis of “seeing clearly”, that is, intelligent analysis technology bears the brunt; at the same time, this explains four developments in video surveillance. Phases: analog monitoring, digitization, networking, high definition, and intelligence.

There are usually two types of intelligent video analysis technology applied to video surveillance solutions. In the most widely used security market, the embedded system based on the intelligent video processor solution is the core. In the embedded system solution, the video analysis device is Placed behind IP cameras, but the future of intelligent analysis will be embedded in the front-end equipment to form an integrated design, the "integration" concept will be played incisively and vividly.

Whether it is video intelligent analysis technology or the future of security vendors, it seems to confirm the definite theory of "technical decision security." In addition, in this visit prior to the opening of the exhibition, various manufacturers have invariably introduced two major categories of products: high-definition equipment and integrated solutions.

Infinite imagination brought by intelligence From the application point of view, intelligent video analysis technology and the previous monitoring technology are essentially different, its main feature is the use of computer vision methods, almost without human intervention, through the camera recording The image sequence is automatically analyzed to locate, identify, and track the targets in the dynamic scene, and on this basis, the behavior of the target is analyzed and judged so as to be able to complete the daily management and timely perform the abnormal situation. Reaction. To put it more vividly, the biggest feature of this technology is the evolution of past visual discovery monitoring into a fully automated control and monitoring. Its advantages are also obvious:

Group behavior analysis: Including normal behavior and abnormal behavior analysis of crowd, traffic flow and other goals. Ability to analyze the normal behavior of the group in the scene, such as counting the number of people or vehicles crossing the entrance or designated area, freeway traffic flow, identifying the overall movement characteristics of the crowd, including speed, direction, etc.; can also be abnormal for the group in the scene Conducting analysis and judgments, such as detecting, classifying, tracking and recording past pedestrians, vehicles and other suspicious objects, judging whether there is any illegal parking of vehicles on the highway, whether vehicles are in trouble, whether pedestrians and vehicles have been prolonged in the restricted area, Staying, retrograde, and other behaviors, detecting whether there are abnormal behaviors such as gathering, running, fighting, etc. 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.

Effectively expand the use of video resources: Apply video resources to non-security areas, such as using the monitoring system of the mall lobby to automatically identify the characteristics of VIP users, and notify customer service personnel to do a good job of service in time, and find that someone in the crowd accidentally falls, promptly Inform the staff of the nearby mall to help. In addition, intelligent monitoring technology can help the owner of the retail store to count the number of customers patronized on the same day to analyze the sales situation.

Retention and Moving Objects Alarm: When a scene (such as a waiting room, conference room, etc.), an object (such as a parcel, a suitcase, etc.) stays in a sensitive area for too long, or exists in the original scene (such as a hand-held object). When the computer or valuable instrument is moved for no reason, the system will send an alarm signal and automatically look up the suspicious person in the previous video screen for placing the retentate or removing the original item.

Protection of the camera: The camera responsible for safety precautions must first have a self-protection function. This is the top priority. If the camera is not protected, everything else is free. Therefore, the intelligent monitoring technology can automatically transfer, alarm and notify maintenance personnel when the camera is blocked, moved, or blurred.

Reduce labor costs: In the actual operation process, using intelligent monitoring technology can greatly reduce the number of operators required. With the support of this technology, it is possible to reduce the time that the monitor stares at the monitor and can't do anything, freeing them up and focusing on the time period of potential threats, rather than just staring at the monitor.

The development of intelligent analysis industry is imperative At present, the industrial characteristics of intelligent analysis technology are not obvious, and the actual application effect is naturally not color. Therefore, it is imperative to carry out industrialized development of intelligent analysis technology.

Illumination changes in the actual environment, complexity of the target motion, occlusion, similarity of the target and background colors, and cluttered background all increase the difficulty of designing the intelligent analysis algorithm. When the environment of the application environment is complicated, and the change of the illumination causes the change of the target color and the background color, the analysis software may cause spurious detection and error tracking. The influence of this illumination change on the algorithm cannot be completely eliminated. In addition, when the moving object in the video image is partially or completely obstructed, or when multiple objects occlude each other, the absence of the target information will affect the stability of the intelligent analysis software in analyzing and tracking. In addition, on the one hand, the current intelligent analysis system must ensure the real-time performance of a large amount of information analysis and tracking, select an analysis algorithm with a small amount of calculation, and at the same time make the analysis algorithm more adaptable to complex backgrounds, changes in illumination, and occlusion, etc. To select a complex analysis and calculation method, it is difficult to satisfy both. Thus, when intelligent analysis technology is applied in various industries, if it is possible to distinguish between application environments and simplification of computing methods, to achieve a single application, specific development for each industry, and embed a special algorithm, or only for a certain kind Or simple analysis of several events, such as personnel tracking of important entrances and exits, the system only needs to embed analysis and tracking algorithms, etc., it will simplify the operation mode of intelligent analysis technology, and the intelligent analysis technology will be more in line with the characteristics of the industry demand, and more For accurate analysis and calculation.

The demand for industrialized development of intelligent analysis technology comes from industrial development and technical limitations on the one hand, and, at the same time, depends more on the actual feedback of actual application effects. At present, intelligent analysis technology has behavior analysis, feature recognition, video diagnosis, classification statistics, etc. The application of intelligent video analysis technology in different industries also has different focuses. For example, the intelligent analysis system in prisons is mainly for cross-border detection, event detection within the region, abnormal behavior identification, etc. The main purpose of this system is to prevent prisoners from being jailed and gang fights, and to maintain perimeter security. For the application needs of road transportation highways and other industries, it is mainly violation detection, traffic statistics, reverse driving, license plate recognition, and traffic incident detection. For public places such as airports and stations where the mobility of personnel is large, the need for detection and detection of abandoned objects is more prominent in order to prevent the occurrence of dangerous goods explosions and suspicious person crimes.

Therefore, it is necessary to carry out effective and reasonable intelligent analysis technology development and application according to the needs of various industries.

About intelligent analysis Intelligent video surveillance technology refers to the use of computer image visual analysis technology to analyze and track the targets that appear in the camera scene by separating the background and the target in the scene. According to the video content intelligence 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 reconstruct the scene of the alarm and take relevant measures.