Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Temporal Scalability through Adaptive M-Band Filter Banks for Robust AVC Video Coding | Hindawi Publishing Corporation EURASIP Journal on Applied Signal Processing Volume 2006 Article 1D21930 Pages 1-11 DOI ASP 2006 21930 Temporal Scalability through Adaptive M-Band Filter Banks for Robust MPEG-4 AVC Video Coding C. Bergeron 1 C. Lamy-Bergot 1 G. Pau 2 and B. Pesquet-Popescu2 1 EDS SPM THALES Communications 92704 Colombes Cedex France 2 TSI Department Ecole Nationale Superieure des Télecommunications 75634 Paris Cedex 13 France Received 15 March 2005 Revised 4 September 2005 Accepted 19 September 2005 This paper presents different structures that use adaptive M-band hierarchical filter banks for temporal scalability. Open-loop and closed-loop configurations are introduced and illustrated using existing video codecs. In particular it is shown that the MPEG-4 AVC codec allows us to introduce scalability by frame shuffling operations thus keeping backward compatibility with the standard. The large set of shuffling patterns introduced here can be exploited to adapt the encoding process to the video content features as well as to the user equipment and transmission channel characteristics. Furthermore simulation results show that this scalability is obtained with no degradation in terms of subjective and objective quality in error-free environments while in error-prone channels the scalable versions provide increased robustness. Copyright 2006 C. Bergeron et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Modern wireless communication applications relying on the use of video services and video streaming are facing a problem that high-speed wired networks seemed to have overcome for them the available bandwidth is still a limiting factor. Moreover IP wireless networks have to cope with both bit errors and packet losses. This is why a new generation of .
