Research On Video Compression Techniques Based On H.264 And It's Application In The Net Video Surveillance System

With the development of information technology, compression coding technology for still image and video sequence is widely used in broadcast television, video surveillance and home entertainment. H.264|ISO MPEG4 Part 10 of MPEG4 standard is a new generation video compression technology for low bit-rate visual communications, which was developed by Joint Video Team (JVT). JVT is made up of ITU-T Video Coding Experts Group (VCEG) and ISO/IEC Motion Picture Experts Group (MPEG). H.264 standard and its key technologies were analyzed. The search algorithm of fast motion estimate was improved, and fast motion estimate was one of the most time-consuming modules. Demonstration program based-on H.264 by TCP/IP in LAN was implemented. At last, the dissertation gave an example of net video surveillance system.The details are studied as follows:Chapter one briefly introduced the general situation of video compression technology. The developing and the current situations of video compression were summarized. Some key technologies for net video surveillance system were set forth. At last, the main contents and general structure scheme of the dissertation were presented.Chapter two studied H.264 standard and its new technologies, the difference from traditional standard were summarized. A simulation experiment was done by H.264 standard's JM85 test model. The result was given, and its performance was analyzed.Chapter three researched fast motion estimate search algorithm, which was one of the most time-consuming module. The improved fast motion estimate search algorithm was set forth based-on systems analysis for some traditional search algorithms.Chapter four set forth error resilience's general situations and its keystone. Now some error resilience technologies, which were often used, were summarized. Researched on new error resilience of H.264 standard, and analyzed its performance.Chapter five studied the H.264's codec model, and detailedly design for system software, implemented demonstration program with two layers based-on H.264 by TCP/IP in LAN.Chapter six set forth a net video surveillance system's example with three layers.