Error-Resilient Scheme for Wavelet Video Codec Using Automatic ROI Detection and Wyner-Ziv Coding Over Packet Erasure Channel
Error-Resilient Scheme for Wavelet Video Codec Using Automatic ROI Detection and Wyner-Ziv Coding Over Packet Erasure Channel
复制标题
使用自动 ROI 检测和数据包擦除通道上的 Wyner-Ziv 编码的小波视频编解码器的容错方案
DOI：
10.1109/tbc.2010.2058371
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发表时间：
2010-08
影响因子：
4.5
通讯作者：
Yip, Pik-Yee
中科院分区：
文献类型：
--
作者：
Xue, Zhuo;Loo, Kok Keong;Cosmas, John;Tun, Myo;Feng, Lifang;Yip, Pik-Yee
作为数据包擦除通道的网络视频传输的容错一直是一项艰巨的任务，受到了广泛的关注。主要的矛盾问题在于容错性和带宽利用率之间的矛盾。为了实现健壮的传输，必须添加额外的冗余数据，这导致了巨大的带宽使用。本文提出了一种基于接收端驱动的分层Wyner-Ziv编码框架的wner - ziv容错方案（WZER）。WZER有意强调帧中感兴趣区域（ROI）区域的保护，从而在带宽使用和容错性之间实现更好的权衡。WZER设计用于在包擦除信道上基于小波的视频编码场景，其中使用了几种技术，包括自动ROI检测、ROI掩码生成、率失真优化（RDO）量化、分层设计的WZ编码和包级低密度奇偶校验（LDPC）码。基于亮度、感知重构和带宽利用率的平均PSNR对WZER的性能进行了仿真，并与正常的前向纠错（FEC）全保护方案和无保护方案进行了比较。实验结果表明，所提出的WZER比传统的FEC保护具有更大的优势，特别是在目标区域的恢复和带宽效率方面。
The error-resilient for video transmission over the Internet in which regarded as the packet erasure channel is always a tough task and has gained lots of attentions. The main contradictory problem lies between error-resilient and bandwidth usage. Additional redundant data has to be added to achieve robust transmission which leads to huge bandwidth usage. In this paper, an error-resilient scheme called Wyner-Ziv Error-Resilient (WZER) based on a receiver driven layered Wyner-Ziv (WZ) coding framework is proposed. The WZER purposely emphasizes on the protection of the Region of Interest (ROI) area in the frame thus to achieve the better tradeoff between the bandwidth usage and error-resilience. WZER is designed to work for the scenario of wavelet based video coding over packet erasure channel, where several techniques including automatic ROI detection, ROI mask generation, Rate distortion optimization (RDO) quantization, WZ coding with layer design, and packet level Low Density Parity Check (LDPC) code are used. The performances of the proposed WZER are simulated based on average PSNR of luminance, perceptual reconstruction and bandwidth usage and compared with normal Forward Error Correction (FEC) full protection scheme and no protection scheme. The results show the advantages of the proposed WZER over traditional FEC protection, especially in the aspects of the recovery of the subject area and bandwidth efficiency.
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DOI：
10.1109/acssc.1998.750863
发表时间：
1998-11
期刊：
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影响因子：
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