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Error resilience and recovery in streaming of embedded video

机译:嵌入式视频流中的错误恢复和恢复

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The three-dimensional(3-D) SPIHT coder is a scalable or embedded coder that has proved its efficiency and its real-time capability in compression of video. A forward-error-correcting(FEC) channel(RCPC) code combined with a single automatic repeat request(ARQ) proved to be an effective means for protecting the bitstream. There were two problems with this scheme: the noiseless reverse channel ARQ may not be feasible in practice; and, in the absence of channel coding and ARQ, the decoded sequence was hopelessly corrupted even for relatively clean channels. In this paper, we introduce a new method of partitioning wavelet coefficients into spatio-temporal(s-t) tree blocks to achieve error resilience.
机译:三维(3-D)SPIHT编码器是一种可扩展的或嵌入式编码器,已证明其在视频压缩中的效率和实时能力。事实证明,前向纠错(FEC)信道(RCPC)代码与单个自动重复请求(ARQ)相结合是一种保护比特流的有效手段。该方案存在两个问题:无噪声反向信道ARQ在实践中可能不可行;并且,在没有信道编码和ARQ的情况下,即使对于相对干净的信道,解码序列也无可避免地受到破坏。在本文中,我们介绍了一种将小波系数划分为时空(s-t)树块的新方法,以实现误差恢复能力。

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