With the development of the times, traditional analog monitoring can no longer meet the requirements of the government and society for the quality of security monitoring. In this context, the voice of HD surveillance will follow. After the market cultivation in the past two years, the application of high-definition products has been significantly accelerated. In addition to the increased use of financial and transportation industries, with the construction of safe city projects around the country, the upgrading of existing projects, high-definition surveillance cameras The scope of application is also expanding year by year. HD surveillance is playing a role in various industries and fields.

Modern HD: "seeing" to "seeing clearly"

Regarding the definition of HD, most manufacturers use the concept of "HDTV" in the field of digital television to call video capture, transmission, display, and recording devices that meet the 720P, 1080P, and 1080I formats as high-definition devices, including high-definition cameras, high-definition encoders, and high-definition Monitors, NVRs, HD decoders and other devices also include companion megapixel lenses.

The performance of the market also confirms that Digital Million HD will lead the future of video surveillance products. According to the survey, the shipments of HD surveillance cameras reached 900,000 units in the first half of 2011. It is expected that the HD camera shipments for the whole year of 2011 will maintain a 100% growth rate, and it is expected to reach 200 units by the end of the year, and the increase will double. . Most monitoring equipment manufacturers are also optimistic that in 2015, megapixel digital high-definition cameras will surpass the analog cameras and become the overlord in security surveillance.

From the “visible” in the past to the current “seeing clearly”, the development of digital high-definition camera technology has laid a good foundation for the development of network security, high-definition, and intelligent security monitoring in the future. In the clear picture that HD surveillance has, intelligent analysis can be implemented to identify, compare, and judge the people or things in the scene of the surveillance picture, and to prompt or alarm the user about the abnormal phenomenon, most of the current video surveillance only Recording, video recording, and the role of playback query after an accident, change to active recognition, alarm, and take preventive measures.

After the "Year of the High-Definition Years": Three Generations of High-Definition Concepts Since 2010, the video surveillance industry has entered the "high-definition first year," and high-definition surveillance projects have sprung up everywhere. In 2011, the Wuhan City Video Surveillance System project completed the construction of 5,000 municipal high-definition surveillance sites. The follow-up will continue to build 20,000 high-definition surveillance sites. In 2012, Quanzhou began investing in and constructing 8,000 high-definition monitoring sites, and Changsha began investing and building 30,000. High-definition monitoring point, Guangdong Public Security Department launched the “Eye Eye Project” to build 96 million high-definition surveillance sites across the province from 2012 to 2014.

The rapid start of the high-definition surveillance market has directly promoted the improvement of high-definition surveillance products and technology upgrades. The major monitoring manufacturers have introduced different high-definition monitoring solutions in different stages of technological development in response to changing user needs. Three generations.

The first generation of high-definition monitoring systems: In 2000, the digitalization of monitoring products accelerated, and the industry gradually reached consensus on the development trend of “digital, networking, and intelligent” monitoring technologies. However, network cameras have always been due to image quality, delay, and price. Various factors are difficult to be accepted by the market until the first generation of high-definition monitoring systems emerged in 2006. This situation has only changed.

The first generation of high-definition monitoring system, mainly composed of "megapixel" cameras and video management software, is suitable for small and medium-sized monitoring sites. Compared with traditional analog surveillance systems, the first generation of high-definition surveillance systems have clearer images and broader coverage. The same surveillance area can replace many existing fixed-point cameras or omnidirectional cameras. Although the initial stage of market promotion was not accepted by the market and it was difficult to apply on a large scale, the introduction of the first generation of high-definition monitoring systems laid a good foundation for “high-definition monitoring” and promoted the attention of the industry to “high-definition monitoring” as a follow-up “high definition”. The vigorous development of monitoring has played an indelible role.

Second-generation HD surveillance system: The second-generation HD surveillance system has emerged with the maturity of high-definition IPCs, high-definition codecs, high-definition optical transceivers, NVRs, and IPSANs, and the rapid start-up of the high-definition surveillance market. The second-generation HD monitoring system has brought unprecedented high-definition experience to users, directly stimulating market demand. In 2010, local security bayonet projects and electronic police projects began to adopt a second-generation high-definition monitoring system on a large scale, and the high-definition monitoring market began. Entering the high-speed development stage, therefore, the industry will call this year "the first year of high-definition."

The third generation of high-definition monitoring systems: In the past two years, the second generation of high-definition monitoring systems has entered a high-speed development stage. Many large-scale safe city projects have begun to use large-scale second-generation high-definition monitoring systems for construction, but they are also used in large-scale markets. It revealed a series of problems that could not be solved in the short term, such as loss of image on the wall and delay in PTZ control, and thus promoted the application of HD-SDI technology in the surveillance industry.

During the use of various systems, people have found that whether it is the original analog surveillance system, the second generation of HD or HD-SDI, there is no place to let it go. The original analog monitoring system has not yet reached the service life. Many outlets are still used, and all are replaced with high-definition. Not only is the investment huge, but it will also face huge risk of decision-making. The second-generation HD system has basically met the needs of users, but in the occasions with high real-time requirements, the performance of large scenes and other images with high definition and detailed requirements is still unsatisfactory. As a result, the third-generation high-definition monitoring system that can both play the advantages of high-definition IPC and high-definition HD-SDI, but also overcome their shortcomings, and can seamlessly access the original analog monitoring system was born.

The third-generation high-definition monitoring system realizes the hybrid access of IP high-definition, HD-SDI high-definition, and standard-definition analog video and mixes with the wall. It is not simply by compressing and encoding the HD-SDI image and analog image into a unified one. The IP image is then realized by unified decoding on the wall display. If only the HD-SDI image and the analog image are compression-encoded and then uniformly decoded on the wall, the significance of the HD-SDI image and the analog image is lost because the IP image is displayed on the upper wall.

The third-generation high-definition monitoring system can be separately connected according to the different characteristics of IP images, HD-SDI images, and analog images. At the same time, different images are displayed on the wall by means of technical means. The IP image display is delayed. , Defective decoded images, HD-SDI images show no delay, lossless original high-definition image, analog image display is a lossless, no delay of the original simulation results. The third generation of high-definition monitoring system truly combines high-definition IPC images, standard definition IP images, high-definition HD-SDI images, and standard definition analog images. The system can meet the requirements of high-definition, high-real-time images, and meet the requirements of digital storage and IP network transmission. Really realize any networking, scheduling, switching, and control of IP high-definition video, HD-SDI high-definition video, and analog video. At the same time, the third generation of high-definition monitoring system is a multi-service integrated system. In addition to video and audio, it can also support the access of multiple signals such as data, Ethernet, and digital signals, and can solve simultaneous access of multiple services on the same platform. The problem.

High-Definition Surveillance Road: Ethnic Brands Take Their Opportunity to Rise The huge market of high-definition surveillance has attracted many companies to invest in it. A wide range of high-definition products has mushroomed into the market, bringing with it a growing market for smoke. Statistics show that: China has more than 600 small and medium-sized enterprises capable of producing various kinds of cameras, of which more than 50 are foreign-funded (including Hong Kong, Macao, and Taiwan) companies, and annually produce more than 15 million surveillance cameras, with an output value of more than 12 billion yuan. The wealth has accounted for about 8% of the national security GDP.

The fierce market competition is an inseparable gap for some companies that do not have R&D capabilities and follow HD, because they cannot face the high-definition access thresholds that are different from the analog surveillance era, they cannot master the core technologies, and they cannot complete product updates. Replacement and continuous service. However, for those powerful companies that are at the forefront of high-definition R&D, they have mastered the core technologies, have strong R&D production capabilities and technical service capabilities, and are able to respond to the needs of technological upgrades at any time, becoming brand enterprises in the high-definition era.