A new unequal error protection scheme based on FMO |
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Authors: | Jhong-Yu Shih Wen-Jiin Tsai |
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Affiliation: | (1) Department of Computer Science, National Chiao-Tung University, Hsinchu, Taiwan, Republic of China; |
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Abstract: | This paper presents a novel scheme for video transmission over error-prone networks. The proposed scheme exploits the error
resilient features of H.264/AVC and employs an unequal error protection (UEP) approach to protect effectively the streams.
A novel algorithm is proposed to classify macroblocks into slice groups using the explicit mode of Flexible Macroblock Ordering
(FMO). A rate distortion optimized algorithm is used to assign unequal amounts of FEC protection to the resulting slice groups
according to their importance. In addition, a Converged Motion Estimation (CME) is proposed to further improve the proposed
UEP scheme. The idea behind the CME is to make the macroblocks be referenced in a skewed manner, such that highly important
macroblocks are converged on only a few and the use of redundancy for error protection is efficient. Simulation results show
the superiority of the proposed method over other approaches for transmission of H.264/AVC streams. |
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Keywords: | |
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