Video surveillance technology highlight

video surveillance technology is in transition
video surveillance technology is in transition, new technologies, new products continue to emerge, gives us more choices. but the transition is not simply replace the old and new, but combining the two gradually, blending, transformation process. advantage of the digital nature can get richer information and expression, and to a greater reduction of system resources. in the process of digitizing video systems, there is finally a video cable too long, both in the analog to digital conversion where the question is how to ensure that the system can get better image quality.
promotion of high-definition surveillance system, we must first clear hd images in what areas can exhibit its advantages. clearly, in the observation image and want to get the local image detail information, the value of high-definition images can be reflected. such as: electronic police or road during bayonet plate recognition system when sufficient number of pixels to receive a higher recognition rate. but often the real-time monitoring environment, high-definition images with the sd picture little difference observed effect; behavioral analysis of the image, the image frame rate stability (time resolution) is demanding, but the image (spatial) resolution rate is not high; for target separation and analysis is mainly based on the target contour, color and other information, does not focus on image details.
hd video surveillance system technology road hd-cctv and network video two programs. the publicity from the media perspective, network video calls seem high, recent reports about hd-cctv voice was growing gradually, in fact, mature technology and image quality, which is an advantage, but by the transmission bandwidth limitations, there is a limit on the scope of application.
hd-cctv, by the way broadcast television systems sdi evolved from a system architecture point of view: it is an extension of the traditional monitoring mode, the core is characterized by a closed structure and the special nature of the transmission medium. it is not the camera output video stream subcontracting, no compression, so send images without distortion, no jitter, real-time, as the background image intelligence analysis system provides the best image. such a structure conducive to the system from sd to hd, smooth from analog to digital conversion, but that does not mean fully compatible with smooth transitions, so-called "plug on the use of" is wrong, that it is identical with the analog video view is wrong. system using coaxial cable or connector bnc cctv systems and simulation products in performance is completely different.
online video, using the network platform digital video systems. its characteristics are open, the system can be self-generated, easy system expansion and upgrades. currently, network-based video surveillance system has been transferred a large number of applications, but with analog video surveillance systems, in image quality also showed no advantage.
currently, many new technologies on resources and environmental conditions demanding applications will be subject to certain restrictions; same time, the effect can be achieved with the expectation still lagging behind. therefore, a proper understanding of the applicability and limitations of new technologies, do not blindly pursue new technology to generate high expectations are healthy development of industry a major focus.
prominent feature of the practical application of video surveillance
video surveillance technology in security systems occupy an important position. it has a practical application in which salient features?
1) video surveillance itself is an active means of detection, which is different from the way the light intensity detection is a direct target of the probe, while
it can take several detection results correlate accurate judgment, therefore, is the best means of real-time dynamic monitoring. image technology can achieve security system all the elements (detection, system monitoring, perimeter and access control).