• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of visual communication & image representation >Robust scalable video multi-cast with multiple sources and inter-source network decoding in lossy networks
【24h】

Robust scalable video multi-cast with multiple sources and inter-source network decoding in lossy networks

机译：健壮的可扩展视频多播，在有损网络中具有多个源和源间网络解码

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents a robust scalable video multi-cast scheme with source diversity and inter-source network decoding in lossy networks. The source diversity technique gives path diversity, providing a better quality of layered video transmission under hostile environments. For each source, an optimization formulation is set up to find the best transmission route of each transmitting video layer. The objectives of the formulation are to maximize the total information values of video layers reflecting the end-to-end video quality and transmission reliability. The source providing the best overall achievable data rate, which is the data rate destination can expect to receive from the transmission, is selected to be the primary source, while the rest will be secondary sources. When the Quality-of-Service (QoS) guarantees of some transmitting video layers cannot be fulfilled by the primary source, the secondary source with the best QoS parameters is selected to transmit the layers to destinations. The number of secondary sources used for transmissions is increased until the QoS guarantees of all transmitting video layers are satisfied or all network resources are utilized. Network coding is deployed to multi-cast video layers from the same source for efficient resource usage. Network coded data from different sources can be used to decode the transmitting video data. In other words, at each destination, it needs only a sufficient number of video packets from different sources to recover all transmitting video data. Simulations with different network topologies show the improvement in both objective and subjective qualities of layered video multi-cast under lossy environments.
机译：本文提出了一种健壮的可伸缩视频多播方案，该方案在有损网络中具有源分集和源间网络解码。源分集技术可提供路径分集，从而在敌对环境下提供更好的分层视频传输质量。对于每个源，建立优化公式以找到每个传输视频层的最佳传输路径。该公式的目的是使反映端到端视频质量和传输可靠性的视频层的总信息值最大化。提供最佳的总体可实现数据速率的源被选为主要数据源，该数据速率目标可以预期从传输中接收到的数据速率，而其余资源将为次要数据源。当主要源无法满足某些传输视频层的服务质量（QoS）保证时，将选择具有最佳QoS参数的辅助源将这些层传输到目的地。用于传输的辅助源的数量增加，直到满足所有传输视频层的QoS保证或使用所有网络资源为止。网络编码从同一源部署到多播视频层，以有效利用资源。来自不同来源的网络编码数据可用于解码传输视频数据。换句话说，在每个目的地，仅需要来自不同来源的足够数量的视频包即可恢复所有传输的视频数据。具有不同网络拓扑的仿真表明，在有损环境下，分层视频多播的客观和主观质量都有所提高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号