How to learn security monitoring knowledge?

The concept of intelligent video comes from computer vision technology. Computer vision technology is one of the branches of artificial intelligence research, which can establish the mapping relationship between images and image descriptions, so that computing can understand the content of video images through digital image processing and analysis. Intelligent video technology mentioned in video surveillance mainly refers to "automatically analyzing and extracting key information from video sources." If the camera is regarded as a human eye, then an intelligent video system or device can be regarded as a human brain. With the help of the powerful data processing function of the computer, intelligent video technology analyzes the massive data in video images at high speed, filters out the information that users don't care about, and only provides useful key information for monitors. Intelligent video surveillance is based on digital and networked video surveillance, but it is different from general networked video surveillance. It is a higher-end video surveillance application. Intelligent video surveillance system can identify different objects, find the abnormal situation in the surveillance screen, give an alarm in the fastest and best way, and provide useful information, thus helping security personnel to deal with the crisis more effectively and minimize false positives and false negatives. In today's increasingly severe global anti-terrorism struggle, intelligent video surveillance can obviously become a powerful auxiliary tool to deal with terrorist attacks and emergencies. In addition, intelligent video surveillance can also be used in traffic management, customer behavior analysis, customer service and other non-security related scenarios to improve the return on investment of users. Advantages of Intelligent Video Intelligent video surveillance is based on ordinary network video surveillance. In addition to the well-known advantages of network video monitoring, intelligent video monitoring system can also bring more benefits to users: all-weather reliable monitoring: completely change the previous mode of monitoring and analyzing monitoring images completely by security personnel, and continuously analyze monitoring images through intelligent video modules embedded in network cameras or video servers. Greatly improve the alarm accuracy: The webcam and video server integrate powerful image processing capabilities and run advanced intelligent algorithms, which enable users to define the characteristics of security threats more accurately, effectively reduce false positives and false negatives, and reduce the amount of useless data. Significantly improve the response speed: identify suspicious activities (such as people leaving suspicious items in public places or people staying in sensitive areas for too long), remind security personnel to pay attention to relevant monitoring pictures, make preparations in advance before security threats occur, and allow users to more accurately define the actions to be taken when specific security threats occur. The monitoring system itself ensures that the crisis handling steps can be carried out accurately according to the predetermined plan, effectively preventing delays caused by human factors in chaos. Effectively expand the use of video resources: apply video resources to unsafe areas, such as using the monitoring system in the lobby of shopping malls to automatically identify the characteristics of VIP users and inform customer service personnel to provide timely services; When someone in the crowd accidentally falls, inform the staff in the nearby shopping mall to provide help in time. In addition, the intelligent video system can also help retail store owners to count the number of customers patronized that day, so as to analyze the sales situation and so on. The main potential applications of intelligent video can be roughly divided into two categories: security-related applications and non-security-related applications. Security-related applications are the main intelligent video applications in the market at present, especially after 9 1 1 terrorist attacks, Madrid bombings and London bombings, the market demand for such applications is increasing. The main function of these applications is to assist the security department of the government or other institutions to improve the safety protection of outdoor public environment. This kind of application mainly includes: advanced video motion detection, object tracking, face recognition, vehicle recognition and illegal detention. In addition to security-related applications, smart video can also be applied to some non-security-related applications. These applications are mainly oriented to retail, service and other industries, and can be used as auxiliary tools for management and service to improve service level and turnover. Such applications mainly include: population statistics, crowd control, attention control and traffic flow control. Overview of intelligent video market at home and abroad From the perspective of market demand, with the increasingly severe anti-terrorism situation, intelligent video surveillance system has attracted more and more attention, and the demand is on the rise. Generally speaking, the foreign smart video application market is changing from the "proof of concept" stage to the "scale application" stage, and smart video has gradually begun to form an industry. Shortly after the conceptual model of intelligent video application appeared, some foreign companies began to develop related software and hardware products. For example, Sweden Axis Network Communication Co., Ltd., the leader of global network video market, launched its intelligent video products, including AXIS 242S IV video server and AXIS IVM 120 intelligent video application module. AXIS 242S IV integrates a special DSP chip (TI DM 642), which has strong image processing ability and can support the operation and development of third-party application software modules. AXIS IVM 120 intelligent video application module can make video monitoring equipment automatically calculate the number of people entering and leaving a specific area for users by analyzing the monitoring screen, which can effectively help managers in service, retail and other industries to analyze business conditions or improve service quality. Axis also plans to launch more intelligent video application modules in the near future, including license plate number recognition and illegal detention. Compared with foreign countries, there is still a big gap in the domestic smart video market, and it is still basically in a blank state. The so-called "intelligent video monitoring" in the monitoring system actually stays in the concept of ordinary network video monitoring. However, as the demand for intelligent video applications similar to those in foreign countries began to appear in the market, some domestic manufacturers began to introduce intelligent video software and hardware products and technologies from well-known foreign manufacturers, and planned to launch them in China in the form of OEM.