Robust FMO algorithm and adaptive redundant slice allocation for wireless video transmission

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• 作者：Feng Zhu ; Weiming Zhang ; Nenghai Yu ; Xianfeng Zhao
• 关键词：Error resilient coding ; H.264/AVC ; Robust FMO ; Adaptive redundant slice allocation
• 刊名：Telecommunication Systems
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：59
• 期：3
• 页码：357-363
• 全文大小：1,533 KB
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  15.Qu, Qi, Pei, Yong, Modestino, James W., & Tian, Xusheng. (2004). Error-resilient wireless video transmission using motion-based unequal error protection and intra-frame packet interleaving. International Conference on Image Processing, 2, 837-40.
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• 作者单位：Feng Zhu (1)
  Weiming Zhang (1)
  Nenghai Yu (1)
  Xianfeng Zhao (2)
  
  1. Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, Anhui, China
  2. State Key Laboratory of Information Security (SKLOIS), Institute of Information Engineering, CAS, Beijing, China
  
• 刊物类别：Business and Economics
• 刊物主题：Economics
  Business Information Systems
  Computer Communication Networks
  Artificial Intelligence and Robotics
  Probability Theory and Stochastic Processes
  
• 出版者：Springer Netherlands
• ISSN：1572-9451

文摘

Visual quality of compressed video may suffer great degradation when transmitted over lossy wireless networks. Flexible macro-block ordering (FMO) is a new error resilient tool adopted by H.264/AVC. It has a good performance of error resilience by changing the coding order of macro-blocks in the frame. redundant slice (RS) is another tool which adds redundant copy of slices into the stream to take precautions against packet loss. However, we shouldn’t only care about peak signal to noise ratio (PSNR) of the video; the robustness of video streams to burst packet loss of wireless channel is also worth considering. In applications, such as real-time video transmission services, degradation of video quality may be tolerable, but collapse of decoder due to burst packet loss will greatly lower user’s quality of experience. This paper proposes a robust FMO (RFMO) algorithm which takes gradient feature of frames into consideration to enhance robustness of video streams, and the adaptive RS allocation (ARSA) helps to increase the PSNR with only a little increase in bit rate. Experiment results show that the RFMO algorithm can significantly reduce the collapse times of decoder with invisible decrease in visual quality, and the ARSA can still guarantee a high PSNR in the case of high packet loss rate.