Interpreting the Top Ten Misunderstandings of IP Video Surveillance
Misunderstanding 1: DVR is the latest and best CCTV monitoring technology
The reality: DVR is generally considered the latest and best technology, many people also believe that DVR is an all-digital network technology. , but this is not the case. Compared with VCR, DVR has many advantages: needn’t to replace the tape, image quality is stable, search fast. However, analog cables are everywhere, and these cables can affect image quality, and they are quite expensive. IP monitoring has all the advantages and more features of DVR, including the following:
Scalability: IP monitoring can increase the speed of a single camera from one camera to thousands of cameras. And DVR is different, it will not appear 16-channel surge, IP monitoring provide a variety of frame rates for all types of cameras at any time, and no restrictions;
Economical architecture: Most devices are connected by twisted pair, so if you use IP architecture do not need additional wiring (CCTV installation project in a larger expenditure), and management of data, video, audio and other documents, To achieve efficient, low-cost management;
Remote access: securely access and control real-time or recorded video streams from anywhere via wired or wireless networks;
The camera's intelligence: dynamic detection, event handling, sensor input, relay output, time and date, and other built-in features enable the camera to make intelligent judgments to determine when the alarm is sent and the time the object is sent, and even the video is sent Frame rate or sharpness;
Low system cost: For many installation systems, the IP monitoring system has proven to be a less costly system. Open and standard networks, servers and storage devices to enable multiple vendors to compete in the market, breaking the single vendor monopoly DVR market situation. In addition, only the need for lower hardware as installation and maintenance costs, you can get better performance, it is clear that IP monitoring can save a considerable amount of cost.
Contrary to some of the erroneous statements, DVR is not the ultimate solution, but a milestone in the development of CCTV technology. Practice has proved that IP monitoring technology has its advanced nature, there is a big difference between these two technologies, and now people have just come to realize this.
Misunderstanding 2: IP technology is not yet mature
If this technology is better, why not push this technology?
IP monitoring is a relatively new technology, many of the current manufacturers have DVR as a competitive solution. These manufacturers want to protect the DVR investment, this is a very natural thing. New technologies and new ideas require a knowledge system and architecture between integrators, consultants and vendors to get rid of current traditional ideas and procedures. How many of us still remember when people were told that typewriters were able to meet all of our requirements, who did these new inventions, and whether it was a distant thing? Let's take a look at the cassette player or VCR, they have been replaced by DVD, and in order to change the already used technology and way of thinking is time-consuming.
The number of IP monitoring installations, as well as the number of integrators and agents, is growing every day. The market will soon find the superiority of IP monitoring, and support the number of such systems is growing rapidly.
If the evidence is not clear enough, then IBM has recently entered the network security market, Cisco and Proxim also began to study this area and other phenomena to further confirm our point of view.
Misunderstanding 3: IP monitoring can not meet the requirements of enterprise applications
The actual situation: the larger the installation scale, the higher the system performance requirements, the IP monitoring system will be able to show a strong competitive and superiority.
In the above obtained IP monitoring system, the advantages of scalability is required by high-end users. For example, orders received by Axis usually include more than 200 and 300 cameras, so far the largest number is 1,300 cameras, some of which are used in high security places such as international airports and prisons. This erroneous statement is easy to correct: IP monitoring applications prove that it can meet the requirements of the enterprise level. In fact, now the government and the airport and other large monitoring system contracts are proposed IP is the preferred architecture, and 12 months ago, the situation is not the case.
Misunderstanding 4: network video image quality is not good simulation
The actual situation: good quality network camera with analog cameras with the same high-quality image sensor (CCD) and lenses. Moreover, by using a video server, an analog camera or an existing analog camera can be combined with an IP monitoring system. We must emphasize that this is said that high-quality network camera is for the professional sector to use. These high-quality dedicated network cameras should not be confused with low-end networks or computer webcams. In fact, these types of cameras in function also reach the full-featured network camera level.
In the near future, when using megapixel resolution, network cameras and IP monitoring technology will be able to provide more advanced image quality, while the analog camera is subject to NTSC / PAL standard 0.4 Mpixel sharpness limit.
Misunderstanding 5: The cost of network cameras is higher than that of analog cameras, making IP monitoring expensive
The actual situation: the network camera is more expensive than the simulation, because they include a lot of functions, such as: digital, image compression and intelligent. If we analyze the total cost of hardware (cameras, cables and video equipment), we can see that IP monitoring systems are often more advantageous than DVRs. If we take into account the cost of installation, because the IP-based architecture in the cost of much lower than the analog coaxial cable, so the advantages of IP monitoring system is more obvious. In addition, the use of PTZ control system requires the laying of additional lines, and IP is not used. Ethernet power is another cost-saving feature that does not require a power cord and is connected to an uninterruptible power supply in the IT network center.
In the high-end installation project completed by Axis in 2002, 300 cameras were installed in a very important high security area and equipped with high frame rate video equipment. The total cost of installing a complete IP video surveillance system is $ 800,000 or $ 2,700 / road. The same function, if the installation of DVR is about 1.8 million US dollars, or 6000 US dollars / road, IP monitoring system more than 2 times more.