Compared to analog cameras, IP cameras to the user is a technical change and the new user experience. At the technical level, the traditional white balance, backlight compensation, wide dynamic technology has the lowest standard. Technology is evolving progress, the IP camera is the reason why such a rapid development, the security industry, the fast-growing market demand and network system architecture construction is the foundation, and camera manufacturers continue to intensify R & D, investment and fierce market competition is the most important reason, IP cameras not only in technology, functionality and design are ever-changing.
The development of IP cameras
With the rapid development of network video surveillance and digital video processing technology continues to change, traditional infrared cameras in recent years more and more to the development of network-based, high-definition direction. 07 years ago, some IP surveillance vendors began to launch early IP infrared camera. But in general this group of IP infrared camera only supports up to CIF resolution, there is no dual-filter design, infrared light is the most common technology is the product of the early experimental.
08,09 years, video coding processing technology and applications become more sophisticated, IP infrared camera support D1 resolution more appeared, and with the popularity of network video surveillance more and more applications. This group of IP IR camera with a professional LED infrared technology, infrared working distance can cover 15 meters to 80 meters.
2010, with the rapid rise of high definition video surveillance, a new generation of IP infrared camera - high-definition infrared network cameras have begun to emerge, these cameras not only the sharpness of the image to achieve the 720P, 1080P HD, but also uses the latest generation of infrared light technology, with a high-end dual-filter design.
Network HD technology along with the rapid penetration of the city in peace, some of the more high-end high-definition infrared network cameras more and more typical HD laser PTZ network cameras such as Kodak, the camera is configured with 100 m infrared laser light, 18 times high-definition movement, safe city in high-end products. In addition, high-definition infrared fastball, high-definition infrared gun with infrared hemisphere is also developing rapidly, the attention of a lot of IP surveillance manufacturer.
The security market a wide range of products has been a certain lack of industry standards, this is one of the conditions of restricting the big security building. In recent years, SONY, Axis, and other well-known IP camera manufacturers to self-organized ONVIF are certain industry standards and corporate self-organized formation of standards, but its response to get more and more enterprises look to the IP camera , or has very important significance.
I believe that within the next few years, the standardization will be the IP camera to the market permits.
Transmission technology to further enhance the construction of IP cameras can be an important foundation for development and progress of technology. Currently in a safe city, financial and network monitoring projects are usually self-built fiber-optic network or local area network 1000M-bandwidth networks. This Gigabit bandwidth resources, installed in the front-end 1080P Full real-time HD network camera 100 road (even if the per Road resource 4Mbps calculation), and occupied less than 50% of the total bandwidth resources; 720P transmission, bandwidth can also be reduced by half, This can effectively support the practical application of high-definition network camera.
In addition, the deployment of 3G mobile data networks, wireless networks become possible as a video image carrier, mobile video surveillance is an important future development direction. 3G video surveillance is a typical representative of 3G multimedia services with high-end and differentiated characteristics, emergency command, bus monitoring, and other professional fields, but, of course, by phone with 3G network can view the features of the monitor screen. let it also applies to ordinary consumers, to achieve the civilian population, family and public service-oriented.
The future, as monitoring technology continues to improve and develop the IP camera as the main direction of one of the monitoring technological developments, combined with optical imaging technology, intelligent analysis techniques, and network transmission technology, and so bring new changes, continue to meet the demand for market competition at the same time, tend to be a self-perfection. A profound impact on the monitoring technology, and it will profoundly change our way of life.
The core technology of IP cameras
Future trends in technology for IP cameras, the Hikvision front-end product line manager Xu Xuan was said: "IP cameras future trends in technology: HD trend, the COMS gradually replace the CCD, intelligent analysis capabilities, standardization, and transmission technology further improved.
HD technology gradually in-depth
Today, the most prosperous of the concept of monitoring is high definition and application, and the success of many large-scale projects also shows that the HD monitor has gradually become the mainstream. Development of high-definition IP cameras can be described by leaps and bounds, in addition to the current contact with more megapixels, 1.3 million pixels, 2 million pixels, 3 million pixels 5 million pixels, 8 million pixels of products on the market, or even tens of millions and ten million The above pixel products are inklings in the surveillance industry. Other high-definition network camera investigation found that: since 2009, with the financial, transportation and other industries as well as the peaceful city part of the project HD monitor high demand, coupled with the Shanghai World Expo, Guangzhou Asian Games and Shenzhen Universiade and other large activities to promote the trend of high-definition monitor, HD network camera (resolution greater than or equal to 720P) rapid growth mushroomed. Some mainstream network video surveillance, such as Panasonic, Sony, Hikvision, Kodak, Axis, Dahua, Yellow River and other vendors have been offering megapixel network cameras in high-definition network monitoring field, a new round of contention. The survey shows that the domestic high-definition network camera in 2010 annual shipments of over 200,000 units, compared with 2009 growth of more than 200%, about 34% of total network camera. In high-definition network cameras, megapixel accounted for 56%, accounted for 37 percent of 2 million pixels, 3 million pixels or more accounted for 7%.
Noise reduction technology and improve
Today, 3D digital noise reduction technology with super wide dynamic IP camera is also very common, and if placed in the past, but proud existence. Of course, new technologies are constantly applied to the IP camera which Such as the Hikvision smartir technology. The technology uses intelligent image processing technology to intelligently adjust the brightness curve through the multi-block brightness of the detected image, thereby preventing the image overexposure and lack of exposure phenomenon to solve the problem of the infrared camera near overexposed, so that uniform distribution of image brightness, the screen restore a more realistic, delicate. Axis "seek light" technology. The technology of illumination has high sensitivity, the camera even in a dark environment, step down and see the monitor object. Panasonic SmartHD technology, the technology embodied in the first high-definition, another technical feature is the intelligent analysis, in fact, is a comprehensive reflection of Smart and HD.
CMOS promote the development of network cameras
The image sensor as a core component of the IP cameras, CMOS has gradually instead of the CCD trend. With the development of technology, the CMOS sensor's performance is being improved rapidly. CMOS sensor response speed faster than CCD, better lower and therefore more suitable for large amounts of data and high-definition monitor. From a market point of view, the traditional manufacturers of CCD SONY has begun to shift the focus of the CMOS sensor in its production of high-definition network camera is almost exclusively using CMOS sensors, which may be regarded as one of the CMOS sensor The initial victory.
Intelligent video analysis technology in-depth
Intelligent video analysis can be said to be another hot addition to the IP camera HD concept. Has been achieved in high-definition network camera or intelligent analysis functions are implemented: video block detection and video loss, video change detection, video fuzzy detection, video motion detection, entrance people counting, crowd movement and congestion identification. items left over recognition, intrusion identification.