The 2001 terrorist attack on September 11 led to security surveillance business opportunities for more than ten years. The current demand for high-definition image capture and intelligent image analysis is increasing, and products are gradually being diverted from general purpose (General Purpose) to vertical applications (Vertical Application). Take vehicle-mounted applications as an example. From the control of traffic conditions to the maintenance of homeland security, it highlights the importance of security monitoring. In terms of architecture, IP Surveillance has become the mainstream and is gradually replacing traditional analog CCTV and DVR systems. .
Network digital surveillance can become the mainstream, but it has many advantages. Yang Xingyao, general manager of NEXCOM’s Intelligent Surveillance Division, said that from high-resolution image capture, intelligent image analysis, and far-reaching network transmission and distribution The architecture of monitoring and video storage, to the central monitoring and management platform of hundreds of cameras, etc., out of the pattern of analog CCTV and DVR architecture. If the industry wants to compete for the on-board surveillance business opportunities, it needs to be comprehensive and fully grasp the six basic elements of image capture, transmission, video recording, monitoring, system integration, and central monitoring management.
High-definition images can be captured with more vehicle environment variables
Image capture takes clarity as the primary indicator. Therefore, the network camera needs to integrate elements such as high resolution, high image update rate, image stabilization, and wide dynamic images to ensure that the captured images are clear and smooth, and meet the needs of subsequent identification and image analysis. In terms of resolution, the current resolution of network cameras can easily reach millions of pixels, and the technology of millions of pixels has already come out.
In addition, there are many environmental variables in the vehicle, which also brings many challenges to image capture. For example, the vehicle is moving fast and the camera’s image capture speed is too slow, which will cause the monitoring screen to be inconsistent. The frame update rate (FPS) of 30FPS needs to be increased to 60FPS to meet the needs of on-board monitoring. In addition, the bumpy driving will cause the image to shake. In order to stabilize the image, the network camera needs to have intelligent analysis and use algorithms to correct the horizontal and vertical shaking.
The interior and exterior of the car are bright and dark, and the high-brightness contrast lighting conditions will make some areas in the captured image too bright or too dark to be recognized. The network camera can provide the “Wide Dynamic Range” function. Yang Wenlang, Director of the Product Planning Department of NEXCOM’s Intelligent Monitoring Division, explained that wide dynamic images can suppress backlighting and strengthen darker foregrounds through multiple exposures, while balancing over-bright or over-dark areas in the image, compared to digital DWDR Compared with the practice, it can improve the overall picture clarity more effectively.
Digital monitoring network to build a complete vehicle monitoring solution
In terms of transmission, video recording, and monitoring, on-board monitoring needs to be highly mobile in accordance with the application environment. The traditional analog architecture relies on coaxial cables to transmit the captured images from the camera to the background DVR video monitoring system. The transmission distance is limited by the cable length, and only single point video and monitoring are supported in the application. The network digital monitoring architecture adopts the far-reaching network transmission, which is not limited by this. It can transmit the single-point monitoring screen to various places to realize the remote backup of the image and the simultaneous monitoring of multiple points.
In addition, in-vehicle monitoring can also be equipped with Wi-Fi wireless access point (AP) to simplify system setup, or integrate the on-board computer to return surveillance images and driving information such as route tracking to the back-end central monitoring and management platform (CMS). Assist remote monitoring personnel to further understand the on-site conditions.
In terms of monitoring and management, the traditional analog architecture relies on the DVR system to digitize and compress analog images in order to perform subsequent image analysis, which not only burdens the DVR system, but also causes picture delays, delays in warnings or other relational response execution. The built-in image analysis of the network camera can help the system accurately identify the details of the event. The back-end system has a lighter load, and the system notifications are more real-time. Later, image retrieval and retrieval are more convenient.
Vehicle monitoring requirements are widely seen in all types of vehicles. Yang Xingyao, for example, in public transportation such as buses, MRT or school buses, drivers can use the vehicle monitoring to watch passengers getting on and off, the condition of the carriages, and the blind spots of the side view of the vehicle to enhance passenger safety. , Curb graffiti, bullying, pickpocketing and other criminal acts, and can also record driving conditions to avoid bad driving behavior. Law enforcement vehicles are also equipped with on-board monitoring systems to record the entire process of police officers’ law enforcement. The recorded images can not only be used as prosecutors to prosecute the evidence, but also can be restored to the scene to avoid police and civilian disputes and reduce case disputes.
NEXCOM has been deeply involved in the automotive market for many years. Solutions include network cameras, video recording systems, GPS, industrial-grade Wi-Fi wireless base stations, etc., with all-round supply capabilities.
NEXCOM Computer Co., Ltd., founded in 1992, is headquartered in Taipei, Taiwan. Its business unit spans five major application markets: industrial computers, on-board computers, multimedia, network security, and intelligent surveillance, and has subsidiaries in seven countries around the world. Provide global services. NEXCOM specializes in deep industry cultivation, and currently holds a leading position in fanless rugged computers (NISE series), in-vehicle computers (VTC series), network security platforms (NSA series), and multimedia (NDiS series).
NEXCOM (China) Co., Ltd.
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