Surveillance applications are becoming more mature, the trend of electronic police HD is obvious

The electronic police system uses video dynamic detection technology, visual recognition technology, computer image processing technology, communication technology and automatic control technology, database technology, and uses high-definition CCD cameras as detection sensors to process dynamic traffic video images in real time. As the eyes of the electronic police, the camera is a commonly used shooting tool for the video electronic police, with stable performance and convenient image transmission. The electronic police monitoring application is also becoming more mature, with broad prospects for future development.

The advantages of the electronic police system are highlighted

The electronic police system can overcome the interference of weather, pedestrians, bicycles, environmental background changes, etc., so as to realize the supervision and detection of the driving behavior of motor vehicles, and has functions such as road condition image monitoring. The electronic police system has seven advantages:

1. The use of advanced video detection technology and license plate recognition technology greatly improves the technical content of the system and greatly reduces the system's false shooting rate and missed shooting rate.

2. Using advanced virtual detection technology, there is no need to bury sensors, sensors and other equipment, reducing engineering investment.

3. Not only record illegal vehicles, but also record the illegal location (intersection name), illegal red light running time (accurate to the second) and other information, which provides a wealth of information for law enforcement.

4. The combination of panorama and close-up is used to make the captured information more sufficient. The panoramic picture can show the red light signal sign on the opposite side, the panoramic view of the vehicle not passing the parking line, and the illegal process of the vehicle crossing the parking line. The close-up picture can fully provide the illegal vehicle. The license plate number, car model, vehicle color, etc. provide sufficient evidence for law enforcement.

5. Superimpose video information characters directly on the picture. The unification of pictures and character information is ensured, and it is difficult for internal personnel to tamper with it manually, which is convincing.

6. The panoramic camera adopts a high-performance color camera specially developed for traffic characteristics, and the close-up camera adopts a high-definition integrated color camera, which can provide high-quality illegal pictures and a wide shooting range.

7. The system adopts high-definition image acquisition technology, with clear images and good color reproduction.

Electronic police camera surveillance applications are maturing

The cameras used by the electronic police are mainly panoramic cameras and close-up cameras. The selection of the camera needs to be determined according to the actual application environment. First of all, two points must be considered: First, the performance of the camera. The performance of the camera is directly related to whether it can shoot a clear picture under various conditions, whether it can see the license plate at night, and whether the color of the captured image is true to meet the requirements of use; The second is the reliability of the camera. The camera must work stably for a long time under various hostile environments that may occur to ensure that the image quality does not deteriorate and the failure rate is low. Road surveillance cameras are installed on very high poles. Installation, commissioning, and maintenance require elevated vehicles, and they also affect normal traffic. If the camera has a high failure rate, its after-sales maintenance service costs are high, and it also affects the reputation of the contractor.

Panoramic cameras can choose 1/3CCD color cameras and 1/2CCD color cameras. Usually 1/2CCD road monitoring color cameras are more commonly used. This kind of camera has low illumination, wide viewing angle, good color, high signal-to-noise ratio, and backlight compensation. Good features. The choice of camera is directly proportional to performance and price. If the requirements for image color, clarity, signal-to-noise ratio, illuminance and other indicators are high, or the local road environment is dark, the general camera cannot shoot images that meet the requirements. Need to use high-end cameras.

The close-up camera is mainly used to see the license plate of the vehicle in the license plate recognition. There are many types of this kind of cameras, such as: 1/2CCD camera, 1/3CCD camera plus supplementary light system, 1/4CCD integrated camera plus supplementary light system. According to the difference in image quality requirements and application environment, different cameras are selected in the design.

1. The road lighting at night is very good. You can choose more types of cameras, such as low illumination 1/3CCD camera with a small amount of LED lights for light or 1/2CCD low illumination color camera or integrated camera with light for compensation. If you want to take pictures of the license plate but also see the color of the car body, but also have low signal noise and high-definition images, you can only use high-end cameras.

2. The road light is dim, and the general camera needs a more powerful supplementary light source. In addition to the clear license plate, the car body contour and color in the image are poor and there are many noise points. If you use 1/2CCD low-illuminance camera plus fill light, you can get better results.

3. The road light is very dark and the front vehicle license plate needs to be recognized, such as city entrances and exits, community entrances and exits, and building entrances and exits. Because the front lights of the car are bright, the ambient light is very dark, the light contrast is large, and the strong vertical light spot is required to photograph the license plate, an auxiliary light source is required, and the selection of the camera is also very demanding. If you need to take long-distance fill light shooting, you must not only take pictures of the license plate but also see the color of the vehicle outline. This requires not only 1/2CCD high-definition, low illumination, high signal-to-noise ratio, and good backlight compensation cameras, but also experienced engineering Repeated debugging by technicians.

4. In road monitoring projects, it often happens that the camera's night parameters are adjusted to meet the requirements. The effect is very poor during the day, or strong backlighting will occur according to the direction of the road. At this time, the camera can not guarantee every Satisfactory pictures were taken within the time period. According to the actual needs of the project, an intelligent license plate recognition camera has come out. It can automatically adjust the camera parameters, turn on the fill light, and fill the light intensity according to the changes in the monitoring scene light to achieve full intelligent control, so as to achieve the priority effect.

Whether it is a panoramic or close-up camera selection, it is necessary to meet lower technical indicators. If you want to pursue better video effects or meet special needs, you need to choose high-performance cameras.

Five Development Trends of Electronic Police System

With the development of the industry, the electronic police industry will present the following five development trends in the future.

Trend 1: Video detection technology will gradually replace coil detection technology

As the coil detection type electronic police is installed, it is inevitable to close the road and break the road for construction and installation, which makes the road surface more serious. After construction, there are many hidden dangers such as road boiling and collapse, which cause a lot of waste of manpower, material and financial resources. Video detection technology has the advantages of easy installation (no need to break the road at all), easy upgrade, and low maintenance cost. Therefore, with the continuous improvement of video detection technology, coil detection technology will gradually be replaced by video detection technology.

Trend 2: High-definition and ultra-clear electronic police products

The original optical film camera and digital camera capture electronic police, their digital cameras use ordinary civilian equipment instead of industrial-grade products specially developed for electronic police. Due to technical limitations, they cannot provide continuous illegal process pictures and have many defects. Therefore, the equipment and performance cannot meet the standards of the Ministry of Public Security, and it has long been withdrawn from the stage of history. Nowadays, high-definition industrial-grade network cameras with high-speed continuous shooting, real-time video, video detection, high stability, and low failure rate have become the mainstream image capture equipment in the industry.

Trend 3: Diversified electronic police functions

The functions of the electronic police system will be expanded from illegal vehicle capture to various applications such as traffic flow collection, traffic monitoring, and traffic guidance, and become the basis of an intelligent traffic management system. The future electronic police system functions will also break through the existing singleness of running red lights and speeding snapshots.

Trend 4: Intelligent management of electronic police equipment

Establish equipment tracking based on electronic map, equipment parameter management configuration, equipment failure alarm, equipment operation report display, etc. to realize intelligent equipment management.

Trend 5: Information sharing in electronic police systems

The construction of an intelligent transportation integrated management platform is the only way to promote the electronic police system and realize modern traffic management.

Establish a road traffic management information platform that integrates road traffic information, vehicle illegal information, equipment information, blacklist information, and video data information of intersections, seamlessly integrates with the car driving management system, and reserves GIS and GPS interfaces to achieve data The unified storage, organization and processing of data can more accurately and effectively ensure the association of data, improve the utilization rate of information and system work efficiency, and lay the foundation for the modernization of road traffic management.