The Performance of CMOS Sensor Signal Noise System in Network Video Surveillance

Compared with traditional video surveillance, network video surveillance has more flexible monitoring methods. Network-based video surveillance breaks the limitations of time and area, eliminates the cost of traditional wiring and line maintenance, and reduces monitoring costs. In the case of authorization, it can be monitored on demand at any time to implement plug-in, ready-to-use, and ready-to-use. The many flexible features and powerful networking features of network cameras have become a topic of interest for a short time. Many optimists in the industry predict that digital cameras will replace analog cameras within two years and network video surveillance systems will replace analog surveillance systems. A large number of production analog cameras and supporting equipment companies in the industry will die out. In order to keep up with the pace of development of the times, many manufacturing companies scrambled to join the digital camera production team.

However, in an applause, the development prospect of the network video surveillance market is not satisfactory. Some industry analysts believe that online video surveillance will also quickly spread in 3 to 5 years. However, some experts believe that it is still too early to predict the popularity of network monitoring. Then the network video surveillance in the end to solve the problem?

Low-light and signal-noise processing of CMOS products Although the megapixel camera products based on CMOS technology currently have shortcomings in low-light environments and signal-to-noise processing, this does not fundamentally affect its application prospects. First, related international companies are stepping up efforts to solve these two problems. It can be believed that the effect of CMOS will be closer and closer to that of CCD, and the price of CMOS devices will be lower than that of CCD devices; on the other hand, the Chinese domestic engineering The integrator's flexibility in engineering skills can greatly reduce the impact of the environment on monitoring performance through work on construction wiring and external lighting. Therefore, the market will still leave a considerable space for CMOS technology network HD cameras. CMOS megapixel cameras are also practical in engineering.

How does a user choose a product system with different resolutions In an actual project, how should a user choose a D1-level system or a mega-pixel-level system based on the project's actual needs and surrounding conditions? This is a very practical issue.

To solve this problem, experts in the industry believe that: Building a high-definition video surveillance system will lead to many improvements in network bandwidth, video storage space, and image decoding capabilities. Correspondingly, in the actual project, we must consider various factors in order to make the right choice between the traditional D1 or even CIF video surveillance system and the new high-definition video surveillance system. These factors are ultimately attributed together and are mainly determined by the customer's ability to bear the funds for project construction and the customer's expectations for the effectiveness of the video surveillance system.

Whether the price is the threshold for high-definition network monitoring applications Currently, network monitoring is tempting to hit the platform system, and the price is relatively expensive. Once the network high-definition monitoring system is established, the price threshold will also be expensive, not the average user can afford. So, the price will not become the threshold for high-definition network monitoring applications.

Some people in the industry believe that the price will not be a threshold for the application of megapixel-class high-definition surveillance systems. The reason is that most of the front-end HD IP cameras use CMOS sensors and ASIC compression chips, so it has a very high cost performance, CCD high-definition The price of the sensor has also dropped to a reasonable range; in the platform part, HD and SD are the same architecture; PC-based client display, because the quad-core has become the mainstream configuration of desktop computers, and many graphics cards themselves High-definition hardware decoding capabilities, so the PC client to display high-definition images is no problem; hardware decoding, dedicated high-definition ASIC decoding chip has also matured, high cost performance.

Industry experts believe that megapixel products are also divided into high, medium, and low grades, among which the price of low-end products will not be very high. In fact, the price of high-definition products being sold in the industry has become more and more popular. However, the construction of high-definition video surveillance systems brings about all kinds of supporting investment, it is still very expensive. Therefore, under the current conditions, high investment will become an obstacle to the promotion of high-definition video surveillance systems.

At present, these industrial users with strong HD demand are basically not very sensitive to prices. What they really care about is quality. From any new technology development, we can see such laws, demand, technical feasibility, and high starting prices. With the development of industrialization and industrial penetration, prices will gradually decline until a new technology completely replaces old technologies. Mainstream. The current price constraint of megapixel-class HD system products is mainly the front-end image sensor. Therefore, in the short term, the price may be slightly restricted, but with the progress of image sensor technology, more and more demand for high-definition trends, the cost reduction is inevitable. High-definition monitoring system products are certainly higher in cost than traditional D1 and CIF monitoring systems. At the same time, the entire monitoring system is related to the network and storage prices, and high-definition encoders are also subject to the price of high-definition cameras. In the short term, price will be a factor, and it is very likely that it will only be applied to local high-end customers. However, with the development of industry and technology, high-definition IP cameras are gradually becoming popular, and the price factor will become smaller and smaller.

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