Title :
Hybrid-mode embedded compression for H.264/AVC video coding system
Author :
Chen, Tung-Chien ; Chen, Yu-Han ; Wu, Ke-Chung ; Chen, Liang-Gee
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Applications of high resolution videos have great potential for H.264/AVC. However, due to the multi-frame motion estimation and large search range (SR) requirement, the ultra high system bandwidth becomes the challenge for the plateform based video codec. In this paper, a hybrid-mode embedded compression (EC) is proposed. Two different strategies are respectively used to compress the reconstructed macroblocks (MBs) of intra- and intermode. Up-to 9.2 times of compression ratio (CR) can be achieved even with lossless-compression constraint. Besides, with resource sharing, this system can be integrated into H.264/AVC codec with almost no area overhead. According to the simulation results, the system bandwidth can be reduced by 66.2% and 75.3% in average for high and median quality situation.
Keywords :
data compression; image reconstruction; motion estimation; video coding; H.264-AVC system; hybrid-mode embedded compression; large search range; lossless-compression constraint; multiframe motion estimation; reconstructed macroblocks; video coding system; Automatic voltage control; Bandwidth; Chromium; Codecs; IEC standards; Image reconstruction; Motion estimation; Strontium; Video coding; Video compression;
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2005. ISPACS 2005. Proceedings of 2005 International Symposium on
Print_ISBN :
0-7803-9266-3
DOI :
10.1109/ISPACS.2005.1595395
