2014 Chinese security video surveillance industry technology development analysis
Security video surveillance industry technical standards and technical characteristics
From a technical point of view, the development of video surveillance system is divided into first-generation analog standard-definition video surveillance systems (CCTV), to the second generation in the core of the DVR digital video surveillance system, the third generation network video surveillance system based entirely on the network .
The first generation of video surveillance is a traditional analog CCTV video surveillance systems (CCTV), rely on cameras, cables, video recorders and monitors, and other special equipment, the presence of a large number of analog CCTV limitations; second-generation video surveillance
DVR is at the core of digital video surveillance systems, digital video surveillance system is the core of the DVR video surveillance solutions, from cameras to DVR still using coaxial cable output video signal,
Also supports recording and playback via DVR can support a limited network access; third generation is the future of video surveillance network video surveillance system based entirely on the network, the network camera and built-in network transmission module provides Ethernet port directly, from any location in the network access, monitor, record.
Currently the video surveillance market is moving from analog to digital, high-definition, networked, intelligent transition, digital video surveillance system has become the mainstream market.
(1) Digital
Digitization process security video surveillance products has already begun in the 20th century, mainly as an analog tape recorder is replaced DVR. With the associated video capture, processing, analysis, transmission and display technologies into
Cooked, analog SD camera market share will also be replaced by all-digital network cameras and HD camcorders coaxial reduced. Coaxial-based HD camcorder HD SDI camera is through coaxial cable
An HD real-time uncompressed digital video cameras, with no delay, lossless uncompressed image, follow the existing analog surveillance systems, etc.; compared to analog cameras are network cameras with higher image resolution and more abundant
Feature-rich video surveillance, IP network through a variety of all-digital process complete security industry technology.
(2) high definition
HD is one of the most mainstream video surveillance industry trends, current, high-definition video surveillance are mainly based on two important development direction of HD and SDI-based network, such as coaxial HD. Compared with the standard definition, either from
Resolution display or fluency, the HD than SD advantage. HD technology will provide more reliable and more efficient basis for intelligent video surveillance, improving functionality and efficiency monitoring system.
(3) Network
Structure of networked video surveillance systems means that the system will be lumped to distributed development. Structure of distributed systems using multi-layer hierarchical, so that the whole network system hardware and software resources
Source, tasks and load can be shared. In a networked video surveillance system can be coded front acquisition, storage, display, analysis, transmission, management modules distributed in various nodes of the network, a variety of monitoring information along the network
Distribution and transmission networks, users can view real-time. Network monitoring system, so that the monitoring more convenient access to information, installation, management and maintenance more flexible and convenient. Network camera is digital and network development results, and the network
A higher degree of network HD DVR will follow the process of promoting the network and the applications.
(4) Intelligent
With the rapid development of video surveillance, content and scope of the monitoring will be more extensive. The development will feature intelligent video surveillance systems mainly engaged after tracing prior warning and turned to the analysis of the main things, which have
Effectively improve the functionality and efficiency of video monitoring system itself. Intelligent video surveillance based on powerful data processing capabilities and video analysis technology to monitor the scenes video content analysis, extraction of key information in the scene, and
The formation of the corresponding event monitoring and early warning, thus improving the functionality and efficiency monitoring system.
Future intelligent video surveillance system will be developed in two directions: one is to adapt to a more complex scenario, two more to be able to identify and analyze the behavior and abnormal events. Which behavioral pattern recognition, biometrics, target detection and analysis, automatic tracking recognition, motion and other techniques to understand the main content of intelligent technology.