Systematic lossy error protection of video based on H.264/AVC redundant slices
Systematic lossy error protection of video based on H.264/AVC redundant slices
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DOI：
10.1117/12.650857
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发表时间：
2006-01
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影响因子：
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通讯作者：
S. Rane;B. Girod
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文献类型：
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作者：
S. Rane;B. Girod
我们建议使用H.264冗余片系统的有损错误保护（SLEP）的视频信号传输在一个容易出错的通道。在SLEP中，视频信号在没有信道编码的情况下被传输到解码器。此外，传输视频信号的Wyner-Ziv编码版本，以便提供错误恢复。在信道错误的情况下，Wyner-Ziv描述被解码作为主视频信号的易出错部分的替代。由于Wyner-Ziv描述通常比主视频信号更粗糙，因此SLEP是一种有损错误保护技术，其权衡残余量化失真以获得改进的错误恢复特性，诸如解码器画面质量的适度降级。我们描述了如何使用H.264冗余切片来生成Wyner-Ziv描述，并给出了仿真结果，以证明这种方法比传统的方法，如FEC的优势。
We propose the use of H.264 redundant slices for Systematic Lossy Error Protection (SLEP) of a video signal transmitted over an error-prone channel. In SLEP, the video signal is transmitted to the decoder without channel coding. Additionally, a Wyner-Ziv encoded version of the video signal is transmitted in order to provide error-resilience. In the event of channel errors, the Wyner-Ziv description is decoded as a substitute for the error-prone portions of the primary video signal. Since the Wyner-Ziv description is typically coarser than the primary video signal, SLEP is a lossy error protection technique which trades-off residual quantization distortion for improved error-resilience properties, such as graceful degradation of decoder picture quality. We describe how H.264 redundant slices can be used to generate the Wyner-Ziv description, and present simulation results to demonstrate the advantages of this method over traditional methods such as FEC.