Compared to analog cameras, IP cameras bring users technological changes and new user experiences. On the technical level, traditional white balance, backlight compensation, and wide dynamic technology are the lowest standards. The technology is continuous development and progress. The reason why IP cameras can develop so rapidly is that the fast-growing market demand for the security industry and the construction of networked system architecture are the basis. Camera manufacturers continue to intensify R&D, investment, and fierce market competition. The important reason is that IP cameras are changing not only in terms of technology, function, and design.
IP Camera Development
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. 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 double filter design. Infrared lamps also use the most common technology and are early experimental products.
By 08 and 09, video encoding technology and applications have become increasingly sophisticated. IP infrared cameras that support D1 resolution have begun to appear more and more, and have gained more and more applications with the popularity of network video surveillance. This batch of IP infrared cameras uses professional LED infrared technology, 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 achieve the 720P, 1080P HD image clarity, but also use the latest generation of infrared light Technology, equipped with a high-end dual filter design.
Accompanied by the rapid penetration of network HD technology in safe cities and other fields, some higher-end HD IR network cameras have also begun to become more and more. Typically, such as Kodak's high-definition laser PTZ network camera, the camera is configured 100 meters. Laser infrared light, using 18 times high-definition movement, is a high-end product in safe city. In addition, high-definition infrared domes, high-definition infrared guns, and infrared hemispheres have also developed rapidly and have attracted the attention of many IP surveillance vendors.
For a long time, many products in the security market lacked certain industry standards. This is one of the conditions that restricts the construction of major security protection. In recent years, ONVIF, which is self-organized by SONY, Axis, and other well-known IP camera manufacturers, is providing IP cameras with certain industry standards. Although companies have spontaneously formed standards, they have received more and more responses from companies. It still has very important significance.
It is believed that in the next few years, standardization will become the passport for IP cameras to go to market.
The further enhancement of transmission technology is an important basic technology for the development and improvement of IP cameras. At present, self-built optical fiber networks or local area networks are usually used to implement 1000M bandwidth networks in projects such as safe cities and financial network monitoring. This kind of Gigabit bandwidth resources, installed in the front-end installation of 100 1080P full-real-time high-definition network cameras (even if each channel occupies resources 4Mbps calculation), occupying less than 50% of the total bandwidth resources; if you use 720P transmission, the bandwidth can also be reduced by half, This can effectively support the practical application of high-definition network cameras.
In addition, the deployment of 3G mobile data networks makes it possible to use wireless networks as video image carriers. 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 areas such as emergency command and bus monitoring. Of course, as long as the characteristics of the monitoring screen can be viewed through a mobile phone with a 3G network, let It also applies to ordinary consumers, to achieve civilians, family, public service.
In the future, with the continuous improvement and development of monitoring technology, IP cameras as one of the main directions for the development of monitoring technology, combined with optical imaging technology, intelligent analysis technology, network transmission technology, etc. to bring about new changes, continue to meet the needs of market competition At the same time, it tends to be a perfect realization of oneself. It profoundly influences the field of surveillance technology and will profoundly change our way of life.
For the future technological development trend of IP cameras, Xu Weicheng, head of product line manager of Hikvision, stated: “The future technological development trends of IP cameras are: HD trend, COMS gradually replacing CCD, intelligent analysis function, standardization and transmission technology. Further improvement.
High-definition technology applications gradually deepening
Today, the most prosperous is the concept and application of high-definition surveillance, and the success of many large-scale projects also shows that high-definition surveillance has gradually become mainstream. The development of high-definition IP cameras can be described as rapid progress. In addition to the current high-megapixel, 1.3-megapixel, and 2-megapixel, 3 million-pixel, 5-megapixel, and 8-megapixel products have appeared in the market, and even 10 million. And more than 10 million pixels of products have begun to show their clues in the monitoring industry. In the investigation of the HD network camera of this publication, we have found that since 2009, with the high demand for high-definition monitoring in some industries such as finance and transportation and Ping An city, together with the Shanghai World Expo, Guangzhou Asian Games, Shenzhen Universiade and other large-scale activities to promote high-definition Under the monitoring trend, high-definition network cameras (resolution ≥ 720P) have mushroomed rapidly. Some mainstream network video surveillance vendors such as Panasonic, Sony, Hikvision, Kodak, Axis, Dahua, and the Yellow River have all launched megapixel network cameras to compete in the field of high-definition network surveillance. According to the survey, the total number of domestic HD network cameras shipped in 2010 exceeded 200,000 units, an increase of more than 200% compared to 2009, accounting for approximately 34% of all network cameras. In HD network cameras, megapixels account for 56%, 2 million pixels account for 37%, and 3 million pixels or more account for 7%.
Noise reduction technology continues to improve
Today, 3D digital noise reduction technology and ultra-wide dynamics are also very common in IP cameras. If it is in the past, it is proud. Of course, new technologies are also being applied to IP cameras. Such as Hikvision's smartir technology. This technology uses intelligent image processing technology to intelligently adjust the brightness curve by detecting the brightness of multiple blocks of an image, thereby preventing overexposure and underexposure of the image, solving the problem of near-exposure of the infrared camera, and evenly distributing the brightness of the image. Restore more real and delicate. Axis' "Lighter" technology. This technology has a very high sensitivity to low illumination, allowing the camera to see the subject even in a dark environment. Panasonic's SmartHD technology, the technology is the first manifestation of high-definition, another technical feature is intelligent analysis, in fact, is a comprehensive embodiment of Smart and HD.
CMOS promotes the development of network cameras
Image sensor As the core component of the IP camera, CMOS has a tendency to gradually replace the CCD. With the development of technology, the performance of CMOS sensors is rapidly improving. CMOS sensors have faster, better, and lower response speeds than CCDs, and are therefore more suitable for high-volume monitoring of large data volumes. From the market point of view, SONY, the traditional manufacturer of CCDs, has begun to shift its focus to CMOS sensors. In its high-definition network cameras, CMOS sensors have been used almost exclusively. This may be regarded as a CMOS sensor. Staged victory.
Application of intelligent video analysis technology
Intelligent video analysis can be said to be another hot topic outside the HD concept of IP cameras. The intelligent analysis functions that have been implemented or are currently being implemented in HD network cameras include: video occlusion and video loss detection, video change detection, video blur detection, video motion detection, entrance and exit statistics, crowd movement, and congestion identification. Item identification, intrusion recognition, etc.
IP Camera Development
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. 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 double filter design. Infrared lamps also use the most common technology and are early experimental products.
By 08 and 09, video encoding technology and applications have become increasingly sophisticated. IP infrared cameras that support D1 resolution have begun to appear more and more, and have gained more and more applications with the popularity of network video surveillance. This batch of IP infrared cameras uses professional LED infrared technology, 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 achieve the 720P, 1080P HD image clarity, but also use the latest generation of infrared light Technology, equipped with a high-end dual filter design.
Accompanied by the rapid penetration of network HD technology in safe cities and other fields, some higher-end HD IR network cameras have also begun to become more and more. Typically, such as Kodak's high-definition laser PTZ network camera, the camera is configured 100 meters. Laser infrared light, using 18 times high-definition movement, is a high-end product in safe city. In addition, high-definition infrared domes, high-definition infrared guns, and infrared hemispheres have also developed rapidly and have attracted the attention of many IP surveillance vendors.
For a long time, many products in the security market lacked certain industry standards. This is one of the conditions that restricts the construction of major security protection. In recent years, ONVIF, which is self-organized by SONY, Axis, and other well-known IP camera manufacturers, is providing IP cameras with certain industry standards. Although companies have spontaneously formed standards, they have received more and more responses from companies. It still has very important significance.
It is believed that in the next few years, standardization will become the passport for IP cameras to go to market.
The further enhancement of transmission technology is an important basic technology for the development and improvement of IP cameras. At present, self-built optical fiber networks or local area networks are usually used to implement 1000M bandwidth networks in projects such as safe cities and financial network monitoring. This kind of Gigabit bandwidth resources, installed in the front-end installation of 100 1080P full-real-time high-definition network cameras (even if each channel occupies resources 4Mbps calculation), occupying less than 50% of the total bandwidth resources; if you use 720P transmission, the bandwidth can also be reduced by half, This can effectively support the practical application of high-definition network cameras.
In addition, the deployment of 3G mobile data networks makes it possible to use wireless networks as video image carriers. 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 areas such as emergency command and bus monitoring. Of course, as long as the characteristics of the monitoring screen can be viewed through a mobile phone with a 3G network, let It also applies to ordinary consumers, to achieve civilians, family, public service.
In the future, with the continuous improvement and development of monitoring technology, IP cameras as one of the main directions for the development of monitoring technology, combined with optical imaging technology, intelligent analysis technology, network transmission technology, etc. to bring about new changes, continue to meet the needs of market competition At the same time, it tends to be a perfect realization of oneself. It profoundly influences the field of surveillance technology and will profoundly change our way of life.
For the future technological development trend of IP cameras, Xu Weicheng, head of product line manager of Hikvision, stated: “The future technological development trends of IP cameras are: HD trend, COMS gradually replacing CCD, intelligent analysis function, standardization and transmission technology. Further improvement.
High-definition technology applications gradually deepening
Today, the most prosperous is the concept and application of high-definition surveillance, and the success of many large-scale projects also shows that high-definition surveillance has gradually become mainstream. The development of high-definition IP cameras can be described as rapid progress. In addition to the current high-megapixel, 1.3-megapixel, and 2-megapixel, 3 million-pixel, 5-megapixel, and 8-megapixel products have appeared in the market, and even 10 million. And more than 10 million pixels of products have begun to show their clues in the monitoring industry. In the investigation of the HD network camera of this publication, we have found that since 2009, with the high demand for high-definition monitoring in some industries such as finance and transportation and Ping An city, together with the Shanghai World Expo, Guangzhou Asian Games, Shenzhen Universiade and other large-scale activities to promote high-definition Under the monitoring trend, high-definition network cameras (resolution ≥ 720P) have mushroomed rapidly. Some mainstream network video surveillance vendors such as Panasonic, Sony, Hikvision, Kodak, Axis, Dahua, and the Yellow River have all launched megapixel network cameras to compete in the field of high-definition network surveillance. According to the survey, the total number of domestic HD network cameras shipped in 2010 exceeded 200,000 units, an increase of more than 200% compared to 2009, accounting for approximately 34% of all network cameras. In HD network cameras, megapixels account for 56%, 2 million pixels account for 37%, and 3 million pixels or more account for 7%.
Noise reduction technology continues to improve
Today, 3D digital noise reduction technology and ultra-wide dynamics are also very common in IP cameras. If it is in the past, it is proud. Of course, new technologies are also being applied to IP cameras. Such as Hikvision's smartir technology. This technology uses intelligent image processing technology to intelligently adjust the brightness curve by detecting the brightness of multiple blocks of an image, thereby preventing overexposure and underexposure of the image, solving the problem of near-exposure of the infrared camera, and evenly distributing the brightness of the image. Restore more real and delicate. Axis' "Lighter" technology. This technology has a very high sensitivity to low illumination, allowing the camera to see the subject even in a dark environment. Panasonic's SmartHD technology, the technology is the first manifestation of high-definition, another technical feature is intelligent analysis, in fact, is a comprehensive embodiment of Smart and HD.
CMOS promotes the development of network cameras
Image sensor As the core component of the IP camera, CMOS has a tendency to gradually replace the CCD. With the development of technology, the performance of CMOS sensors is rapidly improving. CMOS sensors have faster, better, and lower response speeds than CCDs, and are therefore more suitable for high-volume monitoring of large data volumes. From the market point of view, SONY, the traditional manufacturer of CCDs, has begun to shift its focus to CMOS sensors. In its high-definition network cameras, CMOS sensors have been used almost exclusively. This may be regarded as a CMOS sensor. Staged victory.
Application of intelligent video analysis technology
Intelligent video analysis can be said to be another hot topic outside the HD concept of IP cameras. The intelligent analysis functions that have been implemented or are currently being implemented in HD network cameras include: video occlusion and video loss detection, video change detection, video blur detection, video motion detection, entrance and exit statistics, crowd movement, and congestion identification. Item identification, intrusion recognition, etc.
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