With the improvement of people's living standards and the popularity of the Internet, security protection has become more and more popular. Especially in recent years, the development of information technology and the improvement of people's living environment, people's awareness of family safety prevention has been unprecedentedly strengthened. Home network video surveillance, with its technically seamless compatibility with IP networks and the provision of remote real-time video processing capabilities and other network applications, has quickly become the fastest growing product in the market with a 40% annual growth rate. Its market demand is limitless.
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Commonly used home monitoring systems typically include a set of cameras, monitors, and a central storage unit (DVR) that multiplexes video inputs prior to storage. PCs with embedded DVRs can drive basic analysis functions as well as monitoring and storage. The analysis and alarm functions of the basic home monitoring system are usually limited to simple motion detection and time or date stamping. The HMI (Human Machine Interface) is limited to DVR devices. When connected to a PC, the control and monitoring functions are greatly improved.
More advanced surveillance systems add audio monitoring, more video input, remote control and monitoring of Internet links, CD burning, and comprehensive alarm and call features. The high-end system also includes a server (stream multiplexing) that uses a separate additional storage unit instead of a DVR. High-end systems also offer advanced motion detection capabilities, including smart zones and boundaries. For example, in the observation range of a camera, there are many people on the sidewalk that do not cause an alarm, and a large number of people in the area between the family and the sidewalk triggers a mobile alarm. Advanced analytics also include someone strolling and even parceling fall detection. The system is able to identify objects that move little or no. In very high-end home systems, the camera can perform analysis functions and perform real-time detection and alarms.
The PC-based DVR operating system is generally a Windows operating system, which has the characteristics of universal application, simple use, convenient maintenance in the future, and easy upgrade of software. However, the Windows operating system itself is unstable. When the system runs other software in addition to the DVR application software, the system will be unstable, and even serious problems such as "dead" will affect the normal operation of the system.
The market for network video surveillance is currently very broad. According to a 2005 report by Frost & Sullivan on the global video surveillance equipment market, sales of network cameras and video servers will increase from around $100 million in 2002 to $400 million in 2005 and $850 million in 2008. And it is expected to reach more than $1.2 billion in 2010. As part of video surveillance, home video surveillance is also growing and is being promoted as people pay more attention to their own security.
1. Video surveillance digitization. Video surveillance development has experienced three stages: analog video surveillance, semi-digital surveillance, and digital surveillance. For video surveillance, digital storage brings a revolutionary change. Digitization is the characteristics of the 21st century. The digitalization of video surveillance is an inevitable trend of surveillance technology.
2. Video surveillance is intelligent. Intelligentization is a relatively advanced level of video surveillance technology development. Because the amount of data monitored by video is very large, and the information that users really need is only a small part, or what really needs to be monitored is only some events with a low probability of occurrence, how to obtain valuable information through massive data or how to visually Interpretation becomes a new direction for the development of video surveillance technology. Because it is more important for users to turn video surveillance from static, after-the-fact forensics into dynamic, real-time prevention and alerting. In fact, the existing monitoring systems are equipped with automatic motion detection such as automatic motion detection, day and night adaptive switching storage, and early warning settings (such as suspicious photos, fingerprints, etc.). With the development of technology, the all-intelligent monitoring system will require the ability to identify and make correct judgments before the incident, and provide people with the most effective and timely rapid response measures.
3. Video surveillance IP. Video networks and IPTV are important applications for rapid network development. With the development of Internet technology, IP-based video surveillance is more acceptable. Network cameras use compressed video information to transmit multiplexed video over the Internet through TCP/IP protocol. The user can access the Internet at any time to realize the functions of command, scheduling, storage, and authorization control of the entire monitoring system. IP-based video surveillance will become mainstream in view of the impact of IPv6 on quality of service, network performance, and security improvements to improve the impact of Tier 1 IPv6 on next-generation Internet networks.
4. Video surveillance wireless. Wireless includes two aspects: First, the movement of the monitoring center. Usually, the monitored object or the camera is often fixed. As the user of the monitoring system (monitoring center), it can be dynamic. When the company leader is on a business trip, when you need to know the company's production situation, you can use the laptop to access the IP address of the camera anytime, anywhere. The second is the wirelessization of video surveillance networks. With the development of wireless broadband networks, 3G-based wireless video applications have received much attention. When the monitoring points are scattered and far away from the monitoring center, or the monitored objects are not fixed (such as taxis, cash trucks, etc.), video monitoring using traditional wired networks is often costly and difficult to implement, and based on multiple wireless transmissions. The means of mobile video surveillance has an irreplaceable advantage.
With the development of computer, codec and network transmission technology, video surveillance technology has experienced three stages of rapid development, and is now developing towards digital, intelligent, IP and network. At the same time, video surveillance combined with other technologies has produced many new applications, which help meet the needs of different home video surveillance users.
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