Research And Realization On The Software Of Digital Supervise System Video Player

With progress in science and standard of living, more and more video supervise system is adopt in industry manufacture and daily live. Traditional analog video supervise system have evolution to digital video supervise system.Digital video supervise system is a compositive system, which contained the technology of hardware, software and networking. The video player is one of the best important parts of digital video supervise system. It gathers all data from long-distance host computer and accomplishes the task of decoding the data of video, displaying and processing. The efficiency of video decoder of video player and the performance of display is very important to video supervise system. In order to realize a multi-ways video player, we have lucubrated in the efficiency of video decoder, error concealment and video transport in network, accomplished an efficient multi-ways video player.In chapter one, first we review the history of video supervise system and in statement the arithmetic of image compression and standard the video coding. In particular, analyze the status the product of digital video supervise system in domestic and broad, and give the background of research and following content.In chapter two, using the instruction of SIMD and memory in Pentium to optimize IDCT, motion compensation and recompose frame and improving executive speed of IDCT to utilize VLCD and IQ. By integrating motion compensation and recompose frame, classifying the integration according to the mode of macroblock coding and motion compensation integration, and combination in another way to achieve to improve the performance of decoder.In chapter three, in order to reduce the impact of error data corrupt to image, we analyze and compare many error concealment methods and improved hybrid error concealment utilized the trait of the standard of MPEG-1. Process I frames with block-matching error concealment and B, P frames with error replacement concealment.In chapter four, analyze some network transferring technologies about TCP/IP. A resolving method through TCP, UDP, IP Multicast and RTP, is present to transfer video.In the chapter five, design a function model in supervise system to accomplish a multi-ways video player in COM. based on LAN.established a model of supervise system modelIn chapter six, all of the work in this thesis is summed up. The future research of digital video supervise system is prospected.