Integrated cameras are mostly used in government projects, high-end high-rise buildings, shopping malls, schools, hotels, hotel lobbies, etc., as well as dust-proof and low-temperature, non-sparking explosion-proof machines that are especially suitable for places with high environmental requirements such as hospital operating rooms. Products. After decades of development, the integrated camera broke the monopoly of foreign products (Sony, HITACHI, Samsung, Panasonic, LG, and CNB), and lower and lower prices have attracted the attention of industry players. Outside the enterprise, enterprises such as Zhejiang Dahua, Aipu Vision, Wanjiaan, Onix, and Digital China have mastered the core technology of high-definition integrated cameras.
Now, with the development of IP high-definition technology, the uniqueness of the integrated camera, which is incomparable with traditional cameras, has become the new favorite of surveillance. Tiandi Weiye Wang Liang believes that the current high-definition integrated machine industry is still relatively small, the price is also high, but the development trend of high-definition night vision one machine, while the integrated camera intelligent analysis features will be more and more, such as the more line alarm, mobile Detection, etc.; Therefore, networked, high-definition, and intelligent are also the development direction of the all-in-one. Moreover, from the perspective of cost-effectiveness and practicality, the all-in-one is replacing traditional cameras and becomes the new darling of the monitoring system. The balance of the market is being slowed down. Slowly breaking, the market share of all-in-one will become larger and wider, and applications will become more and more widespread.
At present, the HD network cameras used in the field of security monitoring mainly include gun-type cameras, integrated cameras, dome cameras, and high-speed dome cameras. According to the survey statistics, currently high-definition camera products, due to high-definition integrated camera and other models of research and development technology has not yet been popular, gun-type high-definition camera with its own "foremost" early, mature technology and cost-effective advantage of occupying most of the low-end market and some high-end market. Even so, many of its drawbacks can not be ignored.
Focus point offset problem
Gun-type cameras are mainly composed of two parts: the body and the lens. Its high performance depends on the perfect match between the body and the lens. In the monitoring project, if the user or constructor lacks expertise, the camera and the lens will be unreasonable, which will affect the performance of the camera. In security applications, users often use manual focusing lenses. However, manual focusing is dependent on visual inspection and manual adjustment by the human eye. The efficiency and accuracy are not satisfactory. In addition, the gun type is susceptible to moisture, vibration, and thermal expansion. The cold shrinkage and other environmental factors interfere with the environment. After a period of use, it is prone to problems such as blurring, instability, and aging of the camera caused by camera focus shift.
Back focus (back focus) adjustment problem
Due to the unevenness of the target surface of the camera image sensor and the difference in back focus between different lenses, the gun back focus (back focus) adjustment technology has always been a key technology for fixed gun camera manufacturers. The early back-focus adjustment method is mainly the way of the back focus adjustment ring + back focus lock screw, the lock screw is easy to damage the adjustment ring after many adjustments, affecting the stability of the back coke; the other way is the slope self-locking Adjustment mechanism, usually made of plastic material, may also cause back focus to coke due to thermal expansion and contraction in extreme environments. In addition, some new methods use more precise and reliable thread focusing mechanisms, but the cost of the manufacturer's investment in the mold will be more.
For the problem of running out of focus after a period of use, the user and the manufacturer have solutions. Users (or engineers) usually send technicians to the site for processing. Monitoring the front-end equipment is far away in terms of network monitoring. This will also greatly increase the cost of monitoring and maintenance. A few manufacturers also include an electronic back-focus adjustment mechanism in the camera. However, this will undoubtedly increase the cost of the camera.
Night vision problem
Both the user and the manufacturer expect the camera to bring about the same excellent picture quality both during the day and at night. In order to realize all-weather monitoring, in addition to expecting high-sensitivity and high-sensitivity image sensors, manufacturers have to adopt various methods to enhance image effects in low-light environments. For example, day and night infrared cut-off dual filter automatic switching mechanism, color to black, 3D digital noise reduction, digital wide dynamic image enhancement technology.
However, no matter how low the product's minimum illuminance value is, the effect of night surveillance is still somewhat different from that during the day. To get a clear picture, the scene needs to be filled with light (white light, normal infrared, or laser night vision). As far as the gun camera is concerned, the impact of the lens on the camera's low illumination is also of decisive importance. In addition to the megapixel camera, the megapixel HD camera must have a corresponding megapixel camera lens design. Of course, an image sensor with excellent performance in low-light environments, a stable and reliable filter mechanism, a good lens, and an excellent image enhancement algorithm are all good gun camera products. The elements, but these are not affordable for low-priced products.
Zoom problem
Many of the bolt lenses used in the market today are auto-iris manual zoom type, and the focal length is several millimeters to several tens of millimeters. The focal length needs to be adjusted and locked in place during installation. Therefore, the bolt can usually only be used in areas with limited monitoring scope, such as indoors, corridors, parking entrances and exits, etc. where monitoring positions are relatively fixed. Of course, gun-type cameras can also use electric zoom lens, but the electric lens technology is complicated and the production cost is high, so the current electric lens on the market is more expensive. The lens manufacturer adopts strict lens selection, adopts alloy materials commonly used in aerospace technology, and uses high-precision CNC machine tools to make one-time processing. The lens and lens mount connection parts are tightened with locking rings to improve camera stability. This kind of zoom lens is usually used in forest environment and fire prevention monitoring, border defense and other special occasion applications, ordinary users are difficult to popularize. In addition, due to the problem of network delay, manual control of secondary focusing problems caused by power zoom is undoubtedly a major problem.
The market has a technological gap! Because of the many shortcomings of gun cameras in the high-definition era, the advantages of integrated cameras have become more apparent. Hikvision's interview with Tong Zhenhua said that compared with gun cameras, the integrated camera has the characteristics of variable zoom and auto focus, which is very useful for monitoring a narrow and long channel, and can achieve overall monitoring and can be seen clearly. Local details. Gun-type cameras need to be equipped with optional lenses and they must be installed and debugged on the spot. All these tedious tasks are not required for the one-piece machine. All-in-one machines only need to be installed and do not need to be debugged.
In addition, the volume of the all-in-one camera is smaller than that of the general gun-type camera, and the installation is convenient and it is suitable for installation in many locations. The use of a network integrated machine is even more convenient. Only one network cable is required to achieve power supply, video output, and control. Bao Qianli Chen Yanghui's point of view on this topic is the contrast between the integrated camera and the bolt machine or the ordinary model, mainly reflected in the auto focus, the image picture can be kept clear at any time.
Autofocus detects the position of the main object surface of the image by the camera autofocus algorithm, and automatically adjusts the focus motor of the lens according to its focus on the camera's image sensor. In this way, multi-flashing can achieve full automatic focusing of the zoom control, and the image is zoomed. Keep a clear picture at all times during the process. The main technical difficulty of auto focus is to improve the speed and accuracy of the focus, and the accuracy will affect the results of the later image processing. The distance between the subject and the shot in the scene changes every moment, and fast focus is especially important. Day and night automatic conversion technology makes security monitoring become more intelligent, continuous monitoring 24 hours a day. The integrated camera integrates dual filter switching mechanisms. Because the lens is fixed, there is no need to consider the back-focus adjustable mechanism. The integration is high, stable and reliable. In addition, the integrated camera has excellent features such as wide white balance, ultra-wide dynamics, digital noise reduction, and low illumination. Even at night, surveillance images are still good.
In addition, the high-definition network integration camera integrates video, PTZ control, alarm, and power supply into the network. It has functions such as SD card local video storage, motion video image detection, PoE power supply, WiFi, etc., truly realizing pass-through; Xin Luo Zhong Liang believes that, compared to the ordinary bolt machine, the bolt is generally a fixed-focus lens, the focal length must be adjusted in the installation. However, the all-in-one machine can realize zooming, auto focus, self-alignment balance, etc. At the same time, it has excellent wide dynamic capability and automatic infrared filter switching function. After the installation of the PTZ, the mobile observation can be effectively carried out, and the monitoring range is greatly expanded. Compared with the dome camera, it has a certain cost advantage under the conditions that can meet the technical and environmental requirements. Kim Sang-kang Conway holds the same viewpoint as above. He said that the integrated camera is more convenient than the traditional gun-type camera in terms of installation. Its power supply, video, and control signals all have a direct socket, unlike traditional cameras. Troublesome connection.
In addition, the good waterproof function is one of the characteristics of the integrated camera. The outdoor camera of the integrated camera has the waterproof function. In terms of the production process and the service life, the integrated camera lens is well sealed and affected by the external environment than the traditional camera. Small, longer life. However, the all-in-one machine is also available in various types and has different functional characteristics. Compared with other ordinary “camera-in-line type integrated machinesâ€, the Panasonic PTZ camera has better environmental adaptability and image performance capabilities. Functional expansion capabilities. ZTE Li Weilin Tie Nan also added to this topic, the integrated camera is more suitable for monitoring corridors and other monitoring areas compared to ordinary bolts. If used with a PTZ, it is more suitable for a wider monitoring area.
Now, with the development of IP high-definition technology, the uniqueness of the integrated camera, which is incomparable with traditional cameras, has become the new favorite of surveillance. Tiandi Weiye Wang Liang believes that the current high-definition integrated machine industry is still relatively small, the price is also high, but the development trend of high-definition night vision one machine, while the integrated camera intelligent analysis features will be more and more, such as the more line alarm, mobile Detection, etc.; Therefore, networked, high-definition, and intelligent are also the development direction of the all-in-one. Moreover, from the perspective of cost-effectiveness and practicality, the all-in-one is replacing traditional cameras and becomes the new darling of the monitoring system. The balance of the market is being slowed down. Slowly breaking, the market share of all-in-one will become larger and wider, and applications will become more and more widespread.
At present, the HD network cameras used in the field of security monitoring mainly include gun-type cameras, integrated cameras, dome cameras, and high-speed dome cameras. According to the survey statistics, currently high-definition camera products, due to high-definition integrated camera and other models of research and development technology has not yet been popular, gun-type high-definition camera with its own "foremost" early, mature technology and cost-effective advantage of occupying most of the low-end market and some high-end market. Even so, many of its drawbacks can not be ignored.
Focus point offset problem
Gun-type cameras are mainly composed of two parts: the body and the lens. Its high performance depends on the perfect match between the body and the lens. In the monitoring project, if the user or constructor lacks expertise, the camera and the lens will be unreasonable, which will affect the performance of the camera. In security applications, users often use manual focusing lenses. However, manual focusing is dependent on visual inspection and manual adjustment by the human eye. The efficiency and accuracy are not satisfactory. In addition, the gun type is susceptible to moisture, vibration, and thermal expansion. The cold shrinkage and other environmental factors interfere with the environment. After a period of use, it is prone to problems such as blurring, instability, and aging of the camera caused by camera focus shift.
Back focus (back focus) adjustment problem
Due to the unevenness of the target surface of the camera image sensor and the difference in back focus between different lenses, the gun back focus (back focus) adjustment technology has always been a key technology for fixed gun camera manufacturers. The early back-focus adjustment method is mainly the way of the back focus adjustment ring + back focus lock screw, the lock screw is easy to damage the adjustment ring after many adjustments, affecting the stability of the back coke; the other way is the slope self-locking Adjustment mechanism, usually made of plastic material, may also cause back focus to coke due to thermal expansion and contraction in extreme environments. In addition, some new methods use more precise and reliable thread focusing mechanisms, but the cost of the manufacturer's investment in the mold will be more.
For the problem of running out of focus after a period of use, the user and the manufacturer have solutions. Users (or engineers) usually send technicians to the site for processing. Monitoring the front-end equipment is far away in terms of network monitoring. This will also greatly increase the cost of monitoring and maintenance. A few manufacturers also include an electronic back-focus adjustment mechanism in the camera. However, this will undoubtedly increase the cost of the camera.
Night vision problem
Both the user and the manufacturer expect the camera to bring about the same excellent picture quality both during the day and at night. In order to realize all-weather monitoring, in addition to expecting high-sensitivity and high-sensitivity image sensors, manufacturers have to adopt various methods to enhance image effects in low-light environments. For example, day and night infrared cut-off dual filter automatic switching mechanism, color to black, 3D digital noise reduction, digital wide dynamic image enhancement technology.
However, no matter how low the product's minimum illuminance value is, the effect of night surveillance is still somewhat different from that during the day. To get a clear picture, the scene needs to be filled with light (white light, normal infrared, or laser night vision). As far as the gun camera is concerned, the impact of the lens on the camera's low illumination is also of decisive importance. In addition to the megapixel camera, the megapixel HD camera must have a corresponding megapixel camera lens design. Of course, an image sensor with excellent performance in low-light environments, a stable and reliable filter mechanism, a good lens, and an excellent image enhancement algorithm are all good gun camera products. The elements, but these are not affordable for low-priced products.
Zoom problem
Many of the bolt lenses used in the market today are auto-iris manual zoom type, and the focal length is several millimeters to several tens of millimeters. The focal length needs to be adjusted and locked in place during installation. Therefore, the bolt can usually only be used in areas with limited monitoring scope, such as indoors, corridors, parking entrances and exits, etc. where monitoring positions are relatively fixed. Of course, gun-type cameras can also use electric zoom lens, but the electric lens technology is complicated and the production cost is high, so the current electric lens on the market is more expensive. The lens manufacturer adopts strict lens selection, adopts alloy materials commonly used in aerospace technology, and uses high-precision CNC machine tools to make one-time processing. The lens and lens mount connection parts are tightened with locking rings to improve camera stability. This kind of zoom lens is usually used in forest environment and fire prevention monitoring, border defense and other special occasion applications, ordinary users are difficult to popularize. In addition, due to the problem of network delay, manual control of secondary focusing problems caused by power zoom is undoubtedly a major problem.
The market has a technological gap! Because of the many shortcomings of gun cameras in the high-definition era, the advantages of integrated cameras have become more apparent. Hikvision's interview with Tong Zhenhua said that compared with gun cameras, the integrated camera has the characteristics of variable zoom and auto focus, which is very useful for monitoring a narrow and long channel, and can achieve overall monitoring and can be seen clearly. Local details. Gun-type cameras need to be equipped with optional lenses and they must be installed and debugged on the spot. All these tedious tasks are not required for the one-piece machine. All-in-one machines only need to be installed and do not need to be debugged.
In addition, the volume of the all-in-one camera is smaller than that of the general gun-type camera, and the installation is convenient and it is suitable for installation in many locations. The use of a network integrated machine is even more convenient. Only one network cable is required to achieve power supply, video output, and control. Bao Qianli Chen Yanghui's point of view on this topic is the contrast between the integrated camera and the bolt machine or the ordinary model, mainly reflected in the auto focus, the image picture can be kept clear at any time.
Autofocus detects the position of the main object surface of the image by the camera autofocus algorithm, and automatically adjusts the focus motor of the lens according to its focus on the camera's image sensor. In this way, multi-flashing can achieve full automatic focusing of the zoom control, and the image is zoomed. Keep a clear picture at all times during the process. The main technical difficulty of auto focus is to improve the speed and accuracy of the focus, and the accuracy will affect the results of the later image processing. The distance between the subject and the shot in the scene changes every moment, and fast focus is especially important. Day and night automatic conversion technology makes security monitoring become more intelligent, continuous monitoring 24 hours a day. The integrated camera integrates dual filter switching mechanisms. Because the lens is fixed, there is no need to consider the back-focus adjustable mechanism. The integration is high, stable and reliable. In addition, the integrated camera has excellent features such as wide white balance, ultra-wide dynamics, digital noise reduction, and low illumination. Even at night, surveillance images are still good.
In addition, the high-definition network integration camera integrates video, PTZ control, alarm, and power supply into the network. It has functions such as SD card local video storage, motion video image detection, PoE power supply, WiFi, etc., truly realizing pass-through; Xin Luo Zhong Liang believes that, compared to the ordinary bolt machine, the bolt is generally a fixed-focus lens, the focal length must be adjusted in the installation. However, the all-in-one machine can realize zooming, auto focus, self-alignment balance, etc. At the same time, it has excellent wide dynamic capability and automatic infrared filter switching function. After the installation of the PTZ, the mobile observation can be effectively carried out, and the monitoring range is greatly expanded. Compared with the dome camera, it has a certain cost advantage under the conditions that can meet the technical and environmental requirements. Kim Sang-kang Conway holds the same viewpoint as above. He said that the integrated camera is more convenient than the traditional gun-type camera in terms of installation. Its power supply, video, and control signals all have a direct socket, unlike traditional cameras. Troublesome connection.
In addition, the good waterproof function is one of the characteristics of the integrated camera. The outdoor camera of the integrated camera has the waterproof function. In terms of the production process and the service life, the integrated camera lens is well sealed and affected by the external environment than the traditional camera. Small, longer life. However, the all-in-one machine is also available in various types and has different functional characteristics. Compared with other ordinary “camera-in-line type integrated machinesâ€, the Panasonic PTZ camera has better environmental adaptability and image performance capabilities. Functional expansion capabilities. ZTE Li Weilin Tie Nan also added to this topic, the integrated camera is more suitable for monitoring corridors and other monitoring areas compared to ordinary bolts. If used with a PTZ, it is more suitable for a wider monitoring area.
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