At the moment, now the rapid development of mobile internet technology, there is an ubiquitous Internet connection and the need for remote monitoring, and the smart camera market will grow rapidly. 4K HD resolution, edge-based video analysis and new technologies such as H.265 HD video coding penetration are further stimulating the desire of consumers.
According to Global Market Insights Inc latest research report, from 2017 to 2024, IP cameras worldwide shipments of more than 25% compound annual growth rate of rapid growth. 2024, IP cameras global market will exceed $ 20 billion.
Faced with a huge market space, how many new technologies into intelligent camera products, effectively combining software, hardware, networking, design and intelligent automatic monitoring and care of the equipment, and thus enhance the user experience, reduce input costs, become smart camera manufacturers point of force. So AI camera users to buy what it needs to be considered?
First, from the hardware side, the need to focus on, such as appearance, structure design, whether the interface is complete, installation and so on.
Design in general there are several types of gun-type cameras, dome cameras, dome cameras, one machine, fisheye / panoramic camera, PTZ camera. Box camera usually installed in more outdoor applications (with a cover), and some can also be applied in indoor environments, such as corridors, entrances and exits. Dome Camera with indoor multi-application, such as corridors, lobbies, entrances, hallways, the elevator car, stairs and so on. Dome due to general have a higher degree of protection and more used outdoors, such as squares, roads, equally suitable for indoor applications, such as airports, railway stations and so on. PTZ cameras are generally used as a high-altitude vantage, such as cities, forests, and other commanding heights of the border for outdoor models. Current integrated camera appears in a circular, square tubular style machines. Itself with zoom, even the stars fill light level night vision function, while the high degree of protection, both outdoor and indoor applications. Gun-type optical zoom camera having a function of fixing the dome and the angle of view. Fisheye / panoramic camera panoramic two different types of monitoring equipment, fish-eye lens is a single, multi-camera panorama stitching, both of which have a high degree of protection, which is a fish-eye type indoor applications, is the panoramic indoor and outdoor dual-use, multi-monitor in the lobby for a larger field of vision, railway stations, roads, airports and other occasions. With the advent of smart cameras, the integration of devices have become more sophisticated, users greatly increased in accordance with options available to use environment and installation conditions.
For the front of the camera, the camera function is important, structural design can not be ignored, the current camera is nothing more than a variety of materials and new metal alloys PVC plastic, selection of materials related to the user. Further structure is solid, whether the design, whether the material having corrosion resistance, as well as whether there bolt supporting brackets, protection of the camera, heat dissipation, power consumption, if there wipers, whether a wire extension braids, whether automatic zoom etc., installation and post are closely related.
As for the interface aspects of the camera, the main consideration is included PoE function, if it is a mobile surveillance camera, focus on communication function 4G and WiFi modules, as installation, consisting essentially of bracket mounting ceiling, wall-mounted and mobile monitoring and consumer camera placed on desktop etc., interfaces and installation generally regular camera manufacturers have good design, the details of the aspects you need to consider installing your own environment, here stop here.
Secondly, the software side, we need to focus on the client ease of use.
Client design user-friendly or not, will determine whether the camera easy to use. But analog camera has withdrawn from the stage of history, the end customer network cameras flexible, overall operation of the client end network camera is easy to use, can be B / S, C / S both clients to operate the equipment through, configuration parameters can also be achieved by NVR, platform. But relatively speaking, domestic mainstream brands of cameras client the most easy to operate, followed by small and medium brands, international brands, especially Japanese and Korean products, because many features, for the people, and learning to control a little slower.
Finally, from the functional aspects, the user should be concerned even more.
For example, video and image clarity of intelligence, illumination effects, wide dynamic range, data transmission face optimal selection / alignment, license plate capture / comparison, perimeter / tripwire invasion, as well as other basic intelligent detection, camera subsequent upgrades and scalability, these are the user in the selection should be concerned. Determine when the user purchases the smart camera determines what scenarios pit to avoid.
The current mainstream resolution of the camera is 1080P, from cost, operation, imaging is, 1080P has been basically meet the needs of face recognition, is currently the largest manufacturers developed a kind of resolution of the product, and 4K, ultra-high resolution of the product will result in increased storage costs, and the obvious economic benefits in most cases, unless there is a requirement to capture high-definition aspects of procurement generally does not recommend the adoption of smart cameras. The lack of clear resolution of 720P and below, effectiveness, impact imaging results, thus affecting the function of the smart play. But in the field of intelligent transportation, it is recommended to select more than 1080P, eg 700 million or 4K, ultra-high pixel products, license plate recognition and road monitoring, ultra high-definition surveillance cameras generally more lanes, more conducive to saving costs, construction costs, operation and maintenance costs.
The current mainstream monitor manufacturers starlight level camera has become increasingly popular, but each product strength varies, the practical application scenarios, such as the illumination of the city's road, street, etc., even in the middle of the night to reach 0.01Lux still more illumination, So the choice of products to meet 0.001Lux, while the enclosed space, dark area, on the outskirts of the place, needs matching 0.0001Lux super Star products. Although 2017--2018 Star Ultra grade products frequent new, but the measured performance varies greatly, and some of the ones with the target specifications deviations greater practical application, the actual user must verify the selection of illumination over imaging. If the camera has a fill light, we need to pay attention to whether the actual application environment can use the fill light (such as night license plate capture, whether lights affect drivers line of sight; whether to capture human face lights up when the suspect will cause alert, so be more closely supervised Wait). Further, when needed at the square, stadiums and other scenes, from the fill light meets the needs, according to whether the low-color display, the user needs to be considered truly.
Poor low light imaging situation
If the camera is mounted on the chiaroscuro entrances, windows and other obvious scenarios use, requiring a wide dynamic function can be achieved more powerful in the face of a good snap. At present, the mainstream brand cameras are claimed to achieve basic standards of 120dB wide dynamic, however, in the measurement process, the effect of some products less than ideal situation if the yin and yang face, shadow, etc. occur. If the camera is not strong contrast effect application area, major brand cameras in the indoor or outdoor lighting to meet the basic human face capture effect, if the practical application of backlighting in many cases, it also needs to verify the actual effect of wide dynamic re-purchase.
, H.265 has been basically in the mainstream camera manufacturers in the popularity of the brand before SVAC2.0 implementation, and with the development of the network, the network also means that the cost of transmission aspect decline, in addition to the camera to be used in rural or poor network signal wilderness area, usually in an urban scene or need to set up a separate towers, transmission ability of the camera to meet the basic needs. Found although some cameras delay is large, the occupier more single network, but as long as found within 500ms delay, fluctuation in the stream under conditions CBR set value ± 20% belong reasonably acceptable range, greatly accelerates found in mainstream skin brand cameras, no phenomenon beyond the scope of discovery. With the further development of the network, 5G laying of globalization, we believe that the network transmission, the camera will not affect the basic selection.
Select the face for the camera, the primary consideration is whether to quickly detect a human face, is able to quickly filter angle is too large, poor clarity of face images can automatically select the optimal capture, capture images at the same time reducing the number of ensure the quality of the output face image, thus ensuring the accuracy of recognition. In addition, the more important point is that, if the scenario in railway stations, airports, concerts, sporting events and other high traffic-intensive sites, need to focus on low repetition rate of the camera and high-density face capture effect, the goal of preventing duplication and omission.
However, in addition to face the camera can capture the optimum image outside, might only to capture the perspective of the poor, not enough high-definition images, in which case you need facial features and human features combined analysis of the application. Does anyone face database front-end camera, can directly implement human face than at the same time whether the size of the face inventory reserves to meet the daily needs. If the configuration database front-end camera no face, or the need to transfer pictures to a back-end for comparison. The effect of the ratio of how, you need to focus on facial features and analysis algorithms effect the human body characteristics, these effects will take time to verify, not a one of the test can be concluded.
Smart cameras for vehicles, usually backstage than on the license plate, only need to focus on whether the type can be identified under special license plate, and backlight or low light at night, license plate capture effect, other aspects than the license plate recognition technology is mature, can basically meet the current user It needs. As for application of smart cameras in virtual perimeter of the main manufacturers of color will depend on whether the powerful video algorithms perimeter, perimeter set terms, the technology is mature. Tripwire intrusion, motion detection, video blind, intelligent detection aspects of video quality diagnosis, has basically become a standard camera configurations are available.
Finally, as a function of Huawei's software-defined concepts presented attention of the camera, that camera scalability. How the strength of the camera's software, hardware under the same conditions for the realization of the function is strong, whether the software version of the camera can be upgraded remotely subsequent iterations, realized version of the update, on the basis of the existing hardware, supports more powerful, but also need to focus on It points. In fact, prior to this, the basic mainstream brands also support the camera software upgrade, update, currently in the software-defined camera Huawei proposed, it is to encourage manufacturers to maximize the utility software.
summary
In fact, the effect of the choice of smart cameras, the most difficult trade-offs and resolution is intelligence, which is excellent or not mainly by manufacturers of intelligent analysis algorithm to adapt to the scene or not, or not in place, was detected with the target or not, the degree of change in the environment and other factors interference, especially in technology from different manufacturers uneven, resulting in brand selection, equipment selection, intelligent application selection more difficult, and whether there will be launched after acclimatized also need to go through the actual verification be known. Intelligent analysis, in this author's advice is do not believe too much product promotion, and after put the product into the point you want to use a period of testing, according to the detection results do assessments. Read the full text of the original title: the procurement of smart cameras focus on what you need?
Article Source: [Micro Signal: Asmag001, WeChat public number: Safety Automation] Welcome to add attention! Please indicate the source of the article.
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