Compared to analog cameras, IP cameras bring users a technological change and a new user experience. On the technical level, traditional white balance, backlight compensation, and wide dynamics are the minimum standards. Technology is constantly evolving and progressing. The reason why IP cameras can develop so rapidly is that the security industry's rapidly growing market demand and networked system architecture are the foundation. Camera manufacturers continue to increase their R&D, investment and market competition. The important reason is that IP cameras are not only changing in technology, function and design.
This article refers to the address: http://
Development of IP cameras
With the rapid development of network video surveillance and the continuous changes of digital video processing technology, traditional infrared cameras have been increasingly developed in the direction of network and high definition in recent years. Around 2007, some IP surveillance vendors began to launch early IP infrared cameras. However, this batch of IP infrared cameras generally only supports CIF resolution, and there is no dual filter design. Infrared lamps also use the most common technology and belong to early experimental products.
By 2008 and 2009, video coding processing technology and applications have become more and more mature. IP infrared cameras supporting D1 resolution have begun to appear more and more, and more and more applications have been obtained with the popularity of network video surveillance. This batch of IP infrared cameras uses professional LED infrared technology, and the infrared working distance can cover 15 meters to 80 meters.
In 2010, with the rapid rise of high-definition video surveillance, a new generation of IP infrared cameras, high-definition infrared network cameras, began to emerge. These cameras not only achieved 720P, 1080P HD effects, but also adopted the latest generation of infrared lamps. Technology, equipped with a high-end dual filter design.
Along with the rapid penetration of network HD technology in areas such as Safe City, some higher-end HD infrared network cameras are also beginning to appear more and more. Typical HD laser PTZ network cameras such as Kodak are equipped with 100 meters. Laser infrared light, using 18 times high-definition movement, is a high-end product in the safe city. In addition, high-definition infrared fastball, high-definition infrared gun and infrared hemisphere have also developed rapidly, and have received the attention of many IP monitoring vendors.
All along, many products in the security market lack certain industry standards, which is one of the conditions that restrict the construction of large security. In recent years, ONVIF, which is organized spontaneously by well-known IP camera manufacturers such as SONY and Axis, is providing certain industry standards for IP cameras. Although the standards formed by enterprises spontaneously, they are getting more and more enterprises' responses. , still very important.
It is believed that in the next few years, standardization will become a passport for IP cameras to go to market.
The further improvement of transmission technology is an important basic technology construction for IP cameras to develop and progress. At present, in the safe city, financial network monitoring and other projects, the self-built optical network or local area network is usually used to realize the 1000M bandwidth network. This kind of Gigabit bandwidth resource is installed with 100 channels of 1080P full-time HD network cameras on the front end (even if it is calculated by 4Mbps per channel), which occupies less than 50% of the total bandwidth resources; if 720P transmission is used, the bandwidth can be reduced by half. This can effectively support the practical application of HD network cameras.
In addition, the deployment of 3G mobile data networks makes wireless networks possible as video image carriers, and mobile video surveillance is an important development direction in the future. 3G video surveillance is a typical representative of 3G multimedia services with high-end and differentiated features. It is suitable for professional fields such as emergency command and bus monitoring. Of course, as long as the mobile phone with 3G network can watch the characteristics of the surveillance screen, let It is also applicable to ordinary consumers, achieving civilianization, familyization, and public service.
In the future, with the continuous improvement and development of monitoring technology, IP cameras, as one of the main directions of monitoring technology development, combine optical imaging technology, intelligent analysis technology, network transmission technology, etc. to bring new changes and continuously meet the market competition needs. At the same time, it tends to be a perfect realization of oneself. It profoundly affects the field of surveillance technology and will profoundly change our way of life.
IP camera core technology application
For the future technological development trend of IP cameras, Hikvision's front-end product line manager Xu Weicheng said: "The future development trend of IP cameras is mainly: high-definition trend, COMS gradually replaces CCD, intelligent analysis function, standardization and transmission technology. Further improvement.
HD technology applications are gradually deepening
Today, the most prosperous is the concept and application of high-definition surveillance, and the success of many large projects also indicates that high-definition surveillance has gradually become mainstream. The development of high-definition IP cameras can be described as a thousand miles. In addition to the current contact with megapixels, 1.3 million pixels, and 2 million pixels, 3 million pixels, 5 million pixels, and 8 million pixels have appeared on the market, even 10 million. Products with more than 10 million pixels have also begun to show signs in the surveillance industry. In the survey of high-definition network cameras in this journal, we found that since 2009, with the high demand for high-definition surveillance in the financial, transportation and other industries and some projects in Safe City, plus the Shanghai World Expo, Guangzhou Asian Games, Shenzhen Universiade and other large-scale activities to promote high-definition Under the trend of monitoring, high-definition network cameras (resolutions greater than or equal to 720P) have sprung up like mushrooms. Some mainstream network video surveillance vendors such as Panasonic, Sony, Hikvision, Kodak, Axis, Dahua, and Yellow River have launched megapixel network cameras to compete in the field of high-definition network monitoring. According to the survey, the total shipments of HD network cameras in China exceeded 200,000 units in 2010, an increase of more than 200% compared with 2009, and the proportion of network cameras is about 34%. In HD network cameras, megapixels account for 56%, 2 million pixels for 37%, and 3 million pixels or more for 7%.
Noise reduction technology continues to improve
Today, 3D digital noise reduction technology and super wide dynamics are also very common in IP cameras. If they are in the past, they are proud. Of course, new technologies are constantly being applied to IP cameras. Such as Hikvision's smartir technology. The technology adopts intelligent image processing technology to intelligently adjust the brightness curve by detecting the brightness of multiple blocks of images, thereby preventing image overexposure and underexposure, and solving the problem of overexposure of the infrared camera, so that the brightness of the image is evenly distributed. The restoration is more realistic and delicate. Axis's "Twilight" technology. The technology is extremely sensitive to low illumination, allowing the camera to see the subject even in a dark environment. Panasonic's SmartHD technology, the technology first reflects HD, and another technical feature is intelligent analysis, which is actually a comprehensive manifestation of Smart and HD.
CMOS promotes the development of network cameras
As a core component of IP cameras, CMOS has a tendency to gradually replace CCD. With the development of technology, the performance of CMOS sensors is rapidly increasing. CMOS sensor response speed is faster, better and lower than CCD, so it is more suitable for large data volume characteristics of high-definition monitoring. From a market perspective, SON's traditional manufacturer SONY has begun to shift its focus to CMOS sensors. In its high-definition network cameras, CMOS sensors are almost exclusively used. This may be regarded as a CMOS sensor. Staged victory.
Intelligent video analysis technology application
Intelligent video analysis can be said to be another hot spot beyond the HD concept of IP cameras. Currently, intelligent analysis functions that have been implemented or are being implemented in high-definition network cameras include: video occlusion and video loss detection, video change detection, video blur detection, video motion detection, entrance and exit number statistics, crowd movement and congestion recognition, Item legacy identification, intrusion identification, and more.
Stainless Steel Lost Wax Casting
Lost Wax Casting,Steel Lost Wax Casting,Stainless Steel Lost Wax Casting,Lost Wax Stainless Steel Sand Casting
Dongguan Formal Precision Metal Parts Co,. Ltd , https://www.formalmetal.com