IP high-definition monitoring platform integration needs strong

After more than 30 years of development, the security industry has made major breakthroughs in its products, technologies and services. The industry expects that the sales growth of network video surveillance equipment will exceed 25% in 2012, and the demand for video surveillance equipment is maintaining a strong development trend. With the rapid development of network video surveillance and the continuous transformation of digital video processing technologies, traditional infrared cameras have increasingly developed in the direction of networking and high-definition in recent years. Network monitoring came into being. Under the premise of rapid development of the security market, network monitoring gradually embarked on the HD route.

IP HD is gradually on the right track IP high-definition surveillance has been in the market promotion period since 2010. With the application of high-definition products such as the Shanghai World Expo, Guangzhou Asian Games, and Ping An City, the network HD has achieved a 30% growth rate in the past two years. the above. This also shows that the overall high-definition network effects and solutions have been accepted by users. With the gradual maturity of high-definition technology, the low-lightness and bandwidth problems of high-definition network products have been greatly improved, and the cost has also shown a declining trend. It can be said that high-definition is gradually on the right track, and analog HD is an irreversible trend. .

The advantages of IP high-definition monitoring are high definition, ease of use, and freedom from interference, but it should not be overlooked that relative standard definition monitoring has a relatively high price, products have not yet been fully popularized, and the inherent market acceptance needs to continue to increase. The main technical application features of ip HD monitoring are high-definition images brought by its high pixels, and it is very convenient to implement multi-area networking and remote control through network transmission. This is of great significance for security monitoring.

The larger coverage area, one of the advantages of the ip HD camera is that the coverage area is wider, and the same surveillance area can replace the existing multiple fixed-point cameras or omnidirectional cameras. This is for dense places, such as airport security checkpoints, stations, subways, shopping mall entrances and exits, parking lots, factories, bank tellers, etc. It was originally necessary to design multiple dense low resolution cameras to protect the blind spots. Now, deploy ip HD. The camera is a good choice.

Better Image Quality As the so-called "details determine success or failure", ip HD cameras use advanced photoreceptors to make image details clearer, especially for moving objects, the progressive scanning method can provide better image quality and effectively solve interlaced scanning. Comb-like blurring. Reliable image quality details = reliable and rapid investigation and analysis, so that all the hard disk data stored in video are valuable image data, which is of great significance for applications such as license plates and face recognition. On the contrary, if the image is of poor quality and lack of detailed information, it will undoubtedly bring enormous difficulties to the investigation and analysis work in the future.

Multi-area networking is more convenient The high-definition embedded nvr products that are more compatible with ip HD monitoring have become more and more abundant. They play a very important role in the popularity of IP cameras, especially ip HD cameras. Its main function is to The network video stream is used for video recording and storage, and provides real-time display and proxy forwarding functions. Generally, it uses an embedded architecture. Hard decoding supports multi-channel network standard definition or high-definition camera access. The ip HD network camera can greatly improve the interconnection and interoperability through the ip network, realize the interconnection and intercommunion of multiple platforms, integrate the entire social resources, and coordinate the various command centers and information centers to achieve information exchange and resource sharing. , Technology compatibility, is conducive to the sharing of the entire social resources, for the treatment of various types of events can be an effective and rapid response, plug and play mode of use provides a flexible extension.

The civilian market has great potential with the gradual increase in security awareness, security began to enter the era of civilian use, it can be said that security products are no longer only for the professional market, which requires more security products more appropriate for people's lives, to facilitate the use of the common people, for the people Price has become a major factor in the purchase of decisions. For home users, the main role of civil monitoring is to meet the needs of the elderly, children, or family security at home. Its main purpose is to ensure that when the user is out, he can still keep abreast of the situation at home. So under such a premise, the first requirement of home monitoring equipment is positioned as "visible". According to our understanding, the current minimum price for SD 700 line ccd monitoring is between 200 yuan and 300 yuan, and 600 line cmos monitoring is around 200 yuan. At present, the ip HD monitor market price is more than 400 yuan, and most users will choose SD.

For ip high-definition monitoring, this will be a very promising market. With the improvement of user security awareness, SD may not be able to meet people's needs. High-definition, low-price surveillance products may set off the civil security market and drive IP high-definition at the same time. Monitor great development. At the same time, he also believes that ip HD surveillance is not only the HD video capture, that is, the installation of ip HD video cameras, but through the video capture, encoding, transmission, storage, control, decoding output, to the entire node of the center management software, from In this sense, high-definition monitoring is not achieved by a certain product or several products. It must be a protracted war. What is needed is an overall solution.

Although ip HD monitoring technology has matured, due to price factors in the embarrassment of applause, in the civil security market call, may require the manufacturers to develop pricing as appropriate, to the security market users to provide a higher cost of ip HD monitoring, Set off a wave of ip HD monitor civilian applications.

Ip monitoring is eagerly awaiting platform integration. The intelligent demand monitoring system has begun to move from enterprises and people to people's daily lives. Monitoring points are increasing, and it will be increasingly difficult to rely solely on manual methods to discover and retrieve large amounts of video data. In particular, the construction of a safe city is in full swing. The public security system, as the most direct user, will face the surveillance image of the entire city. It is difficult for humans to achieve 24-hour staring at the screen to monitor the entire city. To give a simple example, a museum has lost an item. If there is no intelligent analysis technology, we can only look through all the video files to find clues. However, if smart analysis technology is introduced, we can set a “removal rule” that will automatically alarm when items in the designated area disappear, preventing theft in advance. And there are many intelligent analysis technologies that can provide similar solutions, including "intrusion rules", "stringage rules" and "people statistics", "face recognition" and so on. These technologies will effectively increase the effectiveness and efficiency of the use of the monitoring system.

The initial concept of product category refinement appears to be limited to the gun-type network camera. However, as the technology matures and user needs become increasingly clear, the network camera also derives multiple types and gradually segments the market. At present, we can also see infrared integrated network cameras, gun-type shield network cameras, fast ball network cameras, variable-speed ball-type network cameras and wireless network cameras, network-powered network cameras and other products. We can find a commonality among these products, that is, the webcam is developing in a simpler and easier way. For example, infrared network cameras solve the problem of night-time monitoring. Gun-type shield-type network cameras have achieved monitoring requirements in harsh environments. Fast and variable-speed network cameras have solved network camera PTZ control problems at the same time, and their inherited excellence. The ball head performance also enables it to be competent in a variety of environmental applications. As for the wireless network cameras, network monitoring under remote or inconvenient network environments is solved, and terminal access problems are solved in one step. Network-powered network cameras are a big step in the easy-to-use direction. Currently, the network cameras that support the poe function are also widely used in foreign countries. It is predicted that with the improvement of manufacturers' promotion and practical application environments in the country, this demand will also be increasingly taken into account.

The improvement of the algorithm The core technology of the network camera is its video coding technology. At present, the network cameras mainly include two major implementations of the general dsp chip technology and the asic chip technology. The latter is relatively difficult to develop and can be developed directly based on the chip pci interface, but the algorithm optimization space is small, basically depends on the chip itself, such as intime, vweb, his, wis and other chips.

The former has higher flexibility and can customize system functions, including the introduction of intelligent analysis technology, but it requires manufacturers to do their own algorithms, such as ti, equator, and blackfin.

At present, there are many m-jpeg algorithms used by foreign network camera products. This is an algorithm that treats moving video sequences as continuous still images. This compression method compresses each frame individually and completely. Each frame can be stored randomly in the editing process, and frame-by-frame editing can be performed. However, the m-jpeg compression efficiency is relatively low, and the space occupied by storage is as large as 8 to 8 frames per frame. 15k bytes, it is best to only achieve 3k bytes per frame, so the higher bandwidth is occupied, but also because the video file of this algorithm is legally recognized abroad, and the user is to sacrifice its frame rate. Solve the problem of high bandwidth usage. However, domestic users are more sensitive to bandwidth and frame rate requirements, and they still need to meet the transmission rate of 25 frames at low bandwidth. Therefore, mpeg-4 algorithm, especially h.264 algorithm, has a great market in China. The compression ratio of the h.264 algorithm is 2-3 times that of mpeg-2 and 1.5-2 times that of mpeg-4. Therefore, in the h.264 algorithm optimization, all manufacturers have a lot of room for improvement to meet the customer's demand for bandwidth.

The need for platform integration as a monitoring terminal product, the network camera must be inseparable from the back-end platform software support. Therefore, it will become the main competition point for future development in terms of system software functions, applicable scale, system expansion, system stability, and humanization of operation. In the current network monitoring system, the number of monitoring points and the number of system users have both increased exponentially, and the number of system levels has also increased. A large-scale network monitoring platform is the key to uniting hundreds of network terminals into a whole. At the same time, in a system, we cannot expect only one product of a network camera, and the system should also be compatible with more network video servers, dvr and other product lines. With the construction of safe cities in China and the introduction of telecom carrier-grade product quality requirements, the system platform should be able to be able to have network management, disaster resistance, prevention, and recovery.