A rate-distortion optimized rate shaping scheme for H.264 data partitioned video bitstream |
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| Authors: | Zhang Jinfeng Niu Jianwei He Rui Hu Jianping Wang Ronggang |
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| Affiliation: | 1. School of Computer Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191, P.R.China
2. France Telecom R&D, Beijing 100080, P.R.China |
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| Abstract: | To enable quality scalability and further improve the reconstructed video quality in rate shaping, a rate-distortion optimized packet dropping scheme for H 264 data partitioned video bitstream is proposed in this paper. Some side information is generated for each video bitstream in advance, while streaming such side information is exploited by a greedy algorithm to optimally drop partitions in a rate-distortion optimized way. Quality scalability is Supported by adopting data partition instead of whole frame as the dropping unit. Simulation results show that the proposed scheme achieves a great gain in the reconstructed video quality over two typical frame dropping schemes, with the help of the fine granularity in dropping unit as well as rate-distortion optimization. |
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| Keywords: | rate shaping frame dropping rate-distortion optimization data partition H 264 |
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