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首页> 外文期刊>Journal of visual communication & image representation >A joint source and channel coding algorithm for error-resilient SPIHT-coded video bitstreams
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A joint source and channel coding algorithm for error-resilient SPIHT-coded video bitstreams

机译:防错SPIHT编码视频比特流的联合源和信道编码算法

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摘要

We propose an analytical rate-distortion optimized joint source and channel coding algorithm for error-resilient scalable encoded video for lossy transmission. A video is encoded into multiple independent substreams to avoid error propagation and is assigned forward error correction (FEC) codes and source bits using Lagrange optimization. Our method separates video coding and packetization into different tiers which can be easily incorporated into any coding structure that generates a set of independent compressed bit-streams. To demonstrate the performance, we use the 2-state Markov model to describe the burst loss channel and Reed-Solomon codes as forward error correction codes. Simulation results show that the proposed channel incorporated rate-distortion optimization approach have better performance.
机译:我们提出了一种针对速率误差优化的联合源和信道编码算法,用于有弹性的可伸缩编码视频的有损传输。视频被编码为多个独立的子流,以避免错误传播,并使用拉格朗日优化将其分配给前向纠错(FEC)码和源位。我们的方法将视频编码和打包分为不同的层,可以轻松地将其合并到生成一组独立的压缩比特流的任何编码结构中。为了演示性能,我们使用2状态马尔可夫模型将突发损失信道和Reed-Solomon码描述为前向纠错码。仿真结果表明,所提出的信道合并率失真优化方法具有更好的性能。

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