Digital video surveillance system is bright in the future

At present, with the development of society, the security industry is also developing rapidly, and the digital video surveillance system is advancing by leaps and bounds. By establishing a digital surveillance network covering the main trunk roads and intersections of the city, equipped with corresponding image monitoring equipment and software, the traffic conditions of the traffic intersections are transmitted to the dispatch center in real time, and the traffic road video monitoring system that monitors the running condition of the road vehicles, thereby The public security traffic management department can control the road traffic flow according to the actual situation on the site, arrange the vehicle to the smooth road section, reduce the congestion, ensure the smooth flow of road traffic, and realize the intelligentization of urban traffic management. Among them, road surveillance cameras are the core of intelligent management of road monitoring.

As a video image signal acquisition device, the road surveillance camera is specially used to monitor moving objects such as vehicles, drivers, pedestrians and markers on the road. It requires 24/7 operation and can be captured in real time and clearly. Feature information of the target object (such as number plate, color, face, outline, shape, etc.). The development and urgent needs of the domestic intelligent transportation industry have further deepened the application of road surveillance cameras in the transportation field and continue to play a major role. Because the environment of road surveillance cameras is complex, harsh, and unpredictable, the standards for design, production, and manufacturing are more stringent than other common surveillance cameras. It must be able to be used effectively in a variety of complex road environments, and the quality of the captured video images is clearer and more accurate. The performance requirements of road surveillance cameras are also getting higher and higher, and the product form is more specialized and serialized. In recent years, according to various application requirements, high-definition cameras, infrared cameras, automatic tracking cameras, network cameras, strong light suppression cameras, wide dynamic cameras and other new products with high technical content have been introduced.

1, high-definition monitoring. As the city's "watchman", you must have a pair of bright eyes to see more "clear" and more "far". HD surveillance is the first choice and the must-select product for road surveillance cameras. As the demand continues to increase, the image resolution It also increases. If it is the main road of urban traffic, the camera image reaches 540 lines or even 600 lines. How to use a zoom camera, optical zoom 18 times, 25 times, etc., can meet the needs of long-distance monitoring.

2. Signal to noise ratio and color reproduction. Road surveillance cameras are all-weather monitoring and have strict requirements on products. Especially in extreme weather or poor light conditions, surveillance cameras with high signal-to-noise can meet the monitoring standards. If the signal-to-noise ratio is 50db, the image has a small amount of noise, but the image quality is good; if it is 60db, the image quality is excellent and no noise occurs. The general road monitoring camera signal-to-noise ratio should be greater than 50db. Considering the quality of a camera depends on its color reproduction degree - white balance, in order to ensure the image output effect.

3. It has the function of coping with extreme weather. Road surveillance cameras are placed outdoors and must have strong skills in dealing with extreme weather. In current road surveillance cameras, there are more and more cameras with wide dynamic and infrared night vision effects. Not only can they guarantee surveillance and capture in low light conditions, but they can't escape the "electronic police" eye at night. If you live in a city like “Fog Capital”, perhaps one of the camera's fog-passing night vision reference elements.

4, excellent shell and waterproof, explosion-proof function. All-weather surveillance cameras on the road must have a hard metal casing and can withstand wind and rain for many years. The waterproof, explosion-proof and anti-fog functions of the products should also be prominent. In addition to the special functions mentioned above, these manufacturers require more honing in the process. An integrated camera is a good choice.

The road video surveillance technology has also undergone such a development process: from the early use of analog video surveillance, to the combination of analog and digital, and now to the digital video surveillance; to achieve the analysis of the surveillance image from the complete human resources, Judging that the analog video signal is output by the front-end analog camera, the back end captures the useful image through the computer for digital processing and intelligent analysis, and then the front end is an intelligent IP digital network camera. Today's monitoring technology introduces a large number of computer technologies to assist people in collecting and managing all video information, so that the performance of the monitoring system has been effectively improved. Although most of the current traffic monitoring systems use a mature solution combining analog and digital, the obvious advantage of digital video surveillance technology is that it is developing rapidly. With the development of computer and network technology, advanced and mature digital video surveillance systems will Become the mainstream.