Learn more about IPC product technology

IPC is an abbreviation of IP camera and represents a camera that transmits network video signals over an IP network. With the advent of the era of big data, traditional cameras have been transformed into networks, and cameras have entered the security system through the Internet, which is a requirement of modern security systems. IPC therefore developed rapidly. Do you really understand IPC and how will it develop in the future?

IPC products "The network camera has been developing in blowout mode since 2010, and it will continue to maintain rapid growth in the next 3-5 years. At present, the number of existing cameras is estimated to have exceeded 100 million, and HD cameras have been shipped. The volume accounts for only 20% of total shipments, and this proportion will continue to increase in the coming years.As people's awareness of the security industry increases rapidly, the demand for IPC monitoring is increasing.Low illumination, wide Dynamic, regional coding, fogging modes, corridor modes, intelligent analysis, etc. have become indispensable functions of IPC, and the future development will be more intelligent, high-definition, easy to carry, and miniaturization.

The technical low-lightness statistics of IPC products show that more than 90% of public security cases occur at night, so monitoring at night is more important than daytime monitoring. Whether IPC has high low-light performance is an essential requirement for large-scale projects such as Safe City. In the case of insufficient lighting conditions at night, clear images can be obtained. The requirements for high-definition IPC cameras are relatively high, and it is particularly difficult to obtain images with no noise or less noise. Minimum illuminance is an indicator that people evaluate the camera's sensitivity to brightness. The industry calls this camera a illuminance of less than 0.1 Lux as a low illuminance camera. The lower the value, the higher the camera's sensitivity and the better the performance. The professional high-performance low-light IPC uses the ICR double filter technology to obtain real-time and clear screen output, and can also solve the problem of virtual focus after the color is turned black.

Ultra-wide dynamic wide dynamic technology is used in many indoor applications where there is light, such as bank counters, mobile Unicom business offices, and classrooms. IPC's wide dynamic technology mainly solves the phenomenon of dark indoor scenes caused by strong contrast between the brightness of the camera illumination scene. In general indoor scene monitoring, a large amount of sunlight penetrates from the window or outside the door. When the IPC camera displays the image, the indoor scene will be dark or black. The general backlight compensation can make the indoor view clear, but the outdoor scene is basically It is white; the wide dynamic camera balances the image with the outdoor scene suppression technology by compensating the indoor scene; this can not only see the indoor scene but also the outdoor scene. The wide dynamic range is the ratio of the brightest luminance signal value to the most recognizable dark luminance signal value of the image. Generally, the larger the value, the better the adjustment performance of the IPC camera. Now the mainstream manufacturers can achieve 120dB wide dynamics.

ROI area coding technology High-definition IPC brings unprecedented visual impact to people with high-definition picture quality, but HD also brings with it some problems. High-definition picture quality will occupy relatively large transmission bandwidth and occupy a relatively large storage space. At present, the domestic bandwidth is relatively limited, and the development of high-definition IPC has encountered bottlenecks. In order to solve this problem, ROI region coding technology came into being; this technology is mainly through some algorithms to draw out the area of ​​interest in the screen, this part of high-definition display, the rest of the uninterested part or unimportant part of the standard definition display; And this technology supports one scene to draw out multiple regions of interest. In this way, under the condition of ensuring the clarity of the part of the image, the bandwidth consumption of the image is greatly reduced; the video transmission is smoother and the storage space is more economical. The technology has been widely used in industries with limited network conditions such as banking, warehousing, and public security.

The fog-transmitting mode has increased as a result of the increasing fog and haze in our country, which has brought great harm to our normal life and at the same time has caused inconvenience to our security. Many cameras display hazy images with poor contrast and distant targets that are indistinct and difficult to distinguish, thus affecting the perception of the surrounding situation. The result is that the object is essentially invisible and loses its significance. With the development of IPC, mainstream manufacturers have integrated the fogging technology into the camera well. The principle is that in the range of invisible light, a frequency of light can penetrate the fog, and the camera needs to be processed according to different wavelengths. In order to achieve the purpose of focusing on it, it is also necessary to redesign the camera to image the invisible light at this frequency. Since this invisible light has no corresponding visible light color map, the rendered image is black and white. Photographing objects through clouds and water vapor is equivalent to passing through a double lens (water droplets and actual lens), except that the R light can be correctly focused on the CCD image plane, and the GB in the RGB light cannot be projected onto the CCD image normally. On the surface, it prevents the normal mode lens from getting normal and clear images from clouds and water. In order to obtain better processing results, IPC manufacturers will add a special image processing chip, which can automatically detect the density of the image and keep the details of the image signal to the maximum to achieve color enhancement, contrast enhancement, edge enhancement, contrast enhancement, and brightness enhancement. , And the density division, deblurring and other operations, so that the video quality under different scenes was significantly improved to achieve the purpose of fog. Since the IPC has a fog-transmitting mode, it can better adapt to outdoor hazy weather, and it can also be widely used in ships, ships and other places to adapt to the extremely harsh marine environment, fog, rain, moisture and other common weather.

Corridor model With the increase of monitoring requirements in hotels, guesthouses, communities and other places, the need for monitoring in narrow aisles or corridors will increase. Ordinary IPCs have problems such as lack of vertical vision monitoring in narrow corridors such as “corridors” and “fire lanes”. Corridor scenes in the distance may not be taken into account, or the depth of field may be too deep to see the details of the characters. In order to solve this problem, the model that adapts to this environment is specially customized in the IPC camera—the corridor mode. The "corridor model" is a new technology proposed and applied in the field of security monitoring in recent years. The IPC with this technology can convert the image from the original 16:9 display format to the 9:16 display format, which makes the surveillance area more extensive.

The intelligent analysis and security industry has been developing in China for more than 30 years. In order to meet people's security requirements, monitoring equipment has been updated again and again, and the speed of updating is getting faster and faster. The main purpose of security is security. The key lies in "defense." Today's security can no longer stay in the era of the incident after the occurrence of the incident through the investigation of video, we need the predictability of the incident, do not make a gun. This requires us to analyze the front-end video. Once suspicious phenomena occur, we immediately take measures to kill the incident in the bud.

The intelligent analysis function of IPC began to be used many years ago. However, because of the poor resolution of video images, many false positives will occur, and the development of intelligent analysis of IPC is limited. At present, the resolution of high-definition IPC images has reached 1080P, providing a very good platform for the development of intelligent analysis functions. In terms of technology, currently IPC's intelligent video analysis technology is mainly divided into pattern recognition and behavior analysis technologies. Pattern recognition technology includes: face detection, face comparison, license plate recognition, pyrotechnic identification detection, etc. Behavior analysis includes: crossing lines, entering, leaving, missing, leftovers, crowd gathering, slipping and so on. The core of intelligent analysis is the video algorithm. Currently, the embodiment of the algorithm includes the integration into the hardware and the software-only mode. The effect is basically the same.

IPC's innovative point cloud technology, cloud computing, will revolutionize the business model of the security industry and enable users to use security services like water and electricity. With the continuous development of virtualization, big data, and networks, security clouds are constantly emerging. As an important part of the security system, IPC has achieved cloud storage with the NVR. After the NVR connected to the cloud IPC is damaged, the IPC is automatically stored in other NVRs of the cloud to which the NVR belongs, thus realizing the disaster recovery of the cloud IPC. storage.

It is no longer a dream for civilian IPCs to enter the home. Many and many manufacturers will enter the civil sector. Easy installation, easy operation and easy learning will be the basic requirements for IPC. It is an inevitable trend that the mobile phone will be able to browse the home in real time, and the mobile phone will control the opening and closing of home appliances. IPC will play an irreplaceable role in the smart home.

Wearable wearable cameras are becoming more popular and sought after. Miniaturization and intelligence are the pursuit of miniature cameras by modern people. People's everyday life is dripping inadvertently. Even if you use the most mobile phone, you have to take out your mobile phone. Then you can open the camera or video mode to record it. If you can use a wearable camera, you can Real-time video recording, record moments. The launch of Google Glasses provides journalists with a very good tool. It allows journalists to not miss any scenes she sees. We believe that future IPC cameras will also be a must for people to travel.

Application and technology trends Bio-shake application Bio-shake technology has been very mature, because the various components of the IPC are linked through mechanical equipment, the current anti-shake methods are electronic anti-shake technology, the technology To a certain extent, it can solve the image jitter problem. However, after a long period of vibration, there will be poor contact between the devices, which will affect the service life of the device. Experts have applied biological anti-shake technology to IPC cameras to solve the problem of screen shake caused by external forces. The biological anti-shake technology was discovered by athletes of extreme sports. They installed the camera on the chicken's head and carried the winged flight with the chicken, resulting in a very stable picture. The technology has already been adopted by experts in the security industry. The bio-shake camera will soon be available.

The application of 3D printing technology to provide products in a timely manner and increase supply capacity is the ultimate goal of all manufacturers. 3D printing technology is now familiar and has slowly penetrated into the security industry. Rapid prototyping technology for 3D printing will provide IPC production, quickly provide raw materials, and greatly reduce the IPC production cycle. The application of 3D printing technology will completely change the production methods of IPC, and the production cost will be greatly reduced. Whoever can take the lead in mastering 3D printing technology will be able to have an absolute advantage in the price war. When the security industry manufacturers reshuffle the card, Very likely.