Joint source-channel coding and decoding: Towards viable mobile video

本课题主要研究无线通信网络中视频通信的传输和检测方法及算法，以提高视频通信的可靠性。该项目的结构目标是建立一个强大的研究小组，专注于移动视频系统的端到端设计和分析。本课题的科技目标在于提高移动视频系统的性能。我们想开发一种收发器，它能感知传输的视频内容。通过视频编码器和数据发射器之间的交互，以及数据接收器和视频解码器之间的协作通信，有望实现增强。也就是说，在发送端，我们建议调整各种数据传输模式中可用的保护以适应压缩视频的不同灵敏度。为此，我们将分析由于多维传输在数据传输中所提供的自由度。我们还将开发符合H.264标准的可缩放视频压缩（SVC）输出的灵敏度模型。在接收端，我们提出将空间/时间视觉错误隐藏与信道码的迭代解码相结合来提高视频质量。我们还将研究这种联合源信道解码如何影响视频编码器和数据发射机的设计原则。在该项目中，四名博士和三名本科生将在数据传输和视频（解码）压缩的前沿领域接受多学科培训。

This project is concerned with developing transmission and detection methods and algorithms for improvementof the reliability of video communication in wireless communication networks.The structuring objective of this project is to build a strong research group with a unique focus on theend-to-end design and analysis of mobile video systems. The scientific and technical objectives of this projectare in the improvement of the performance of mobile video systems. We want to develop transceivers that areaware of the communicated video contents. The enhancement is expected to come through the interactionbetween the video encoder and the data transmitter, as well as through the collaborative communicationbetween the data receiver and the video decoder.Namely, at the transmitter, we propose to adjust the protection available in various modes of the datatransmission to varying sensitivity of the compressed video. To this end, we will analyze the degrees offreedom offered in the data transmission due to multi-dimensional transmission. We will also develop thesensitivity models for the outputs of the Scalable Video Compression (SVC) compliant with H.264 standard.At the receiver side, we propose to improve the video quality combining the spatial/temporal visual errorconcealment with the iterative decoding of the channel codes. We will also study how such jointsource-channel decoding impacts the design principles of the video encoder and data transmitter.During this project, four Ph.D. and three undergraduate students will receive multidisciplinary training incutting edge areas of data transmission and video (de)compression.