Implementation of Multiple Macroblock Mode Overlapped Block Motion Compensation for Wavelet Video Coding |
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| Authors: | Jiazhong Chen Jun Xu Dong Xiang Chunjing Geng |
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| Affiliation: | (1) College of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China;(2) Department of Electrical and Computer Engineering, University of Florida, P.O. Box 116130, Gainesville, Florida 32611-6130, USA;(3) School of Computer Science and Technology, Wuhan University of Technology, Wuhan 430070, People's Republic of China |
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| Abstract: | This paper proposes a hybrid video coding framework based on discrete wavelet transform and multiple macroblock mode overlapped
block motion compensation (OBMC). Studying the neighborhood in multiple macroblock mode situations, we set rules for the selection
of neighboring blocks in OBMC. Based on experimental results, the raised cosine window and the best neighboring blocks are
chosen for their outstanding performance. The multiple macroblock mode OBMC has a good performance in reducing the blocking
effect, and the coding efficiency is improved. The proposed scheme can provide a 1 dB coding gain compared to MPEG-4, and
its performance is close to the latest H.264 standard. From a subjective point of view, the new framework is also better than
the standards. |
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