Network Video Surveillance System Adaptive Technology

With the rapid development of Internet, Streaming Media has become the prime newly application. In the video monitoring system of the network, Streaming Media has more broad future and research value. Although, according to the requirement of real-time in the monitor data, how to resolve the inconsistency between the Qos (Quality of Service) architecture of Internet and the assurance of real-time has become a dominant area in today research for monitoring system.Present research to concentrate on mainly is compress standard and compress research of choice of way to digital audio frequency and video, because compression standard compress way is obvious to digital result that audio frequency and video produce, apt to become effective most. Compress standard and compress choice of way often restrict by the hardware, and source code scheme is very difficult to offer a good video quality assurance to video monitoring system of the network through video only. This text compares and analyses various kinds of compression standards of the digital audio and video at first, has chosen MPEG-4 compressed scheme as the video of monitoring system of video finally. Afterwards, the main content of this thesis -how to get a considerate Qos architecture through the improvement of control scheme of the congestion and the choice of the protocol which is suit to Streaming media in the transmission layers of ISO architecture. Internet is the "best-effort" network, it is based on TCP agreement that the majority is used. For guarantee and TCP compatible, this article discusses congested control technology AIMD to TCP organization. Because of the situation that changes in the network , streaming media that use TCP can cause video yards of fluctuation rapidly of rate to transmit to go on to transmit, thus cause decline quality of video, unable to get one satisfactory Qos scheme. On the basis of this discussion, this article introduce TFRC agreement emphatically. Thereafter, the article is utilized on the basis ofcongested MSTFP that based on the congested control of TFRC, with the buffer control we put forward design plan of adaptive technique, and finish the demonstration of the adaptive technique through the test datum that acquired from the scheme that is built up in the lab. At the end of the article, the article summarizes the whole systems to review, combine of the future generation network(IPv6) Qos research ,and explains how is current situation to realize monitoring system with adaptive technique to go on.