Study Of AVS-M Video Coding Technology And Its Application

With the rapid development of wireless communication networks and new high-efficiency video compression technology, video transmission in mobile communications networks and terminals is getting an increasing broad application. At present a number of video compression standards have being used in wireless network video transmission, among which the MPEG-4 and H.264 have the best development prospects. However, the core technology and patent of such standards are controlled by the foreign institutions and enterprises, which has become the bottleneck of domestic mobile video industry.Accompanied by the launching of 3G networks and the flourish development of mobile multimedia business, the video compression technology with independent intellectual property rights are urgently needed to upgrade domestic core competitiveness and support the industry sustainable development. To meet the needs described above, Audio Video coding Standard Workgroup of China formulates a new generation of mobile video compression standard AVS-M, which has the independent intellectual property rights and aims at the rapid development of wireless networks and mobile equipment, including the application of interactive storage media, broadband video service, multimedia mail, multimedia service based on IP network, remote video surveillance, video conferencing, video telephone, etc. The formulation of AVS-M standards begins at the 8th meetings of AVS Workgroup, in Shenzhen in March 2004, and in December 2004 at the 11th meeting the final draft document and the corresponding reference software encoder and decoder are generated. After three times revisions, in September 2005 at the 14th meeting the standards document is frozen for the approving of government. Currently, the standard has been submitted to the relative government of China, expected to be the next generation of mobile video coding national standard.As a new video compression standard, its performance in practical application gets much concern in the industry. The key technology differences and the performance comparison between AVS-M and H.264 are studied and advantages of AVS-M is summarized for the first time in this thesis; For the first time, real-time AVS-M decoder on current different middle and high-grade mobile terminals is realized with the speed above 15 frames per second decoding QCIF format video by...