The mean of the Network Camera rise

The mean of the Network Camera rise
The emergence of IP Network Camera, intelligent video analysis technology has opened up a broad road. The technique utilizes a computer analysis of the video signal, and extract the "event". The amount of information of the video source, the more the stronger the functions can be realized in the future. The high amount of information must be based on high-resolution video image. If also limited by the resolution of 768 × 576, so many intelligent applications out of the question. IP Network Cameras allow people to completely get rid of the image clarity bottleneck, and thereby achieve a transformation from quantitative to qualitative.
Highly integrated, intelligent video surveillance system:
People know all about video surveillance technology, all these years, the video surveillance system technology has been a lot of progress.
Once upon a time, a few cameras, a few video lines, several monitors, a tape drive, constitute a set of video surveillance systems. Important task is to design a circuit video surveillance system integrators, to calculate the loop impedance, a bunch of thread, a bundle of a bundle of lines, as well as pick up numerous video cable, light cleanup thread you have ten and a half video switch matrix machine. Sweating engineers "electrician" is very familiar with the circuit design. That is the first generation of analog video surveillance system.
From "electrician" to the experts:
Do not remember from the DVR (digital hard disk video), instead of a tape drive; DVS (Digital Video Server) appeared in the video turned into a digital signal; gone video cable into cable ... In addition to the monitor on the wall, the system is a completely different world. The most discussed is no longer what impedance, 232 and 485 become MPEG4, H.264 becomes into video compression, CIF and 4CIF. The electrician "live slowly reduced, most of their time in front of computer monitors, and seems to have become a computer expert. Digitization process of the monitoring system.
Well, the video digitizer to the monitoring system to bring what? In fact, every person familiar with monitoring all know the answer. Analog video signal is turned into digital signals, all work easier. We give up a matrix of those bulky equipment and mess like video line, we have been able to take advantage of the digital transmission network to see the video screen thousands of miles away to be able to sit in front of a computer mouse click, and instantly a few years ago need to complete hard work live two weeks to complete.
Grab Webcam:
From this perspective, we digitization of video surveillance systems has been completed. Coincidentally at that time, and came out a new term - IP Network Cameras.
What is an IP Network Camera? In fact, it is easy to answer: there is such a camera, behind it in addition to a power line, access is not an analog video cable, but a network cable. It is no longer using DVS, and directly to the video signal transmitted to the Internet. Other people through the network can immediately see the the cameras monitor screen. It is said that a large number of IP Network Camera video surveillance system has become an international trend.
To tell the truth, just getting started with this thing, it feels a little funny: video Internet thing. I demolished a camera, then a DVS also demolished two things with the line is connected, tape a bunch of outside and then put on a big point of the box, plug in power, this is not the IP Network Camera thing. An energized, the video also flew the Internet, if no different.
IP Network Camera is really just the original analog camera + DVS it? Right philosophical point to the Netw IP Camera from analog camera + DVS, whether quantitative or qualitative change?
Early and looked, from a functional the IP Webcam analog camera + DVS combination indeed almost even quite as good as, from a certain point of view. For example, in order to ensure versatility, IP Network Camera is difficult to use well-designed unique video compression algorithm, which may reach less than DVS as video compression efficiency. Similarly, in the DVS technology delve superb today, IP camera difficult than mature DVS more flexible and has more features.
So to say, from the analog camera + DVS combination fanfare to launch IP Network Camera, there really is progress, even regressed from the function, the most they can claim to be a not very successful quantitative.
However, people who think so are wrong! This is definitely a major qualitative leap!
High resolution is a qualitative change:
Its qualitative change in where? In fact, very simple, is to abolish the analog video link. Familiar with the video surveillance system all know, analog camera + DVS combination is actually the analog video output access to DVS in digitization and network technology, and the IP camera from video photosensitive module start already completed digitization, after all links are in digital form for transmission.
At first glance, it seems the difference is not large, but should be aware that once appeared in the middle of the aspects of the analog video signal, no matter how short-lived, its resolution and the amount of information is limited to analog video standards. Take the PAL video standard for its resolution is 768 × 576. In other words, the analog camera DVR no matter what approach its maximum resolution is only 768 × 576. Would like to increase the resolution to increase the amount of information you have to change the standard analog video, this is very vast and complicated project.
Despite these nouns sounds a mouthful, but the meaning is very clear. From the standpoint of the clarity and resolution of the analog video signal there is a bottleneck, the bottleneck of a limiting amount of information. IP Webcam avoided precisely is the bottleneck!
Here, clearly, the disappearance of this bottleneck is the amount of information a lot of ideas when. Understand that the bottleneck of the analog video signal is not present, the camera's high-definition era has arrived.
However, rough look to improve the resolution of the video seems can see more clearly, if there is no big deal, is not to mention what a qualitative leap. Qualitative change? Exaggerated, right?
High resolution bring new applications:
And delve deeper technical staff of the video surveillance system is very clearly one of the major significance. Another technique because of the emergence of IP Webcam opened up a broad road. That is, intelligent video analysis technology.
Intelligent video analysis technology for intelligent video signal analysis, to allow the computer to complete the work of some smart judgment. However, the monitoring system to a large extent are afterwards inquiry system. To safety requirements forcing people to find ways to improve the efficiency of the monitoring system, the threat comes to discover abnormalities, as much as possible to avoid or reduce losses. Therefore, video analysis technology to become the first choice.
The so-called video analysis, computer analysis of the video signal, and extract the "event". Here estimated aside the technical realization, and detail, intuitive view, the more the amount of information contained in the video source, the more information can be extracted in the future, the stronger the functions can be realized. And all this must be based on high-resolution and highly informative video.
If limited to a resolution of 768 × 576, many future applications are out of the question. But now, IP Network Camera allow people to completely get rid of the bottleneck. Apply, that is: With it, anything is possible. You say that in the end is a quantitative or qualitative change
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