CAREER: Processing of Images and Video for Emerging Communication Media

通过无线网络高效传输可视数据是许多不断发展的通信应用的核心，从无线办公室到紧急管理、远程医疗以及智能手持设备中的服务集成。这些应用要求在恶劣信道上具有前所未有的端到端性能，例如无线LAN和ad-hoc无线网络，并对压缩和差错控制编码的性能提出了严格的要求。本研究正在开发用于在无线网络上传输图像和视频的先进编码和信号处理算法。研究者正在研究两种主要的联合信源信道编码方法，即代数码和多描述码，以捕捉前者的效率和后者的鲁棒性与综合方法。接收端信号处理的并行工作正在产生算法，这些算法将提高现有系统和标准的性能。

Efficient transmission of visual data over wireless networks is at the heart of many evolving communications applications, ranging from wireless offices to emergency management, telemedicine, and integration of services in smart handheld devices. These applications require unprecedented levels of end-to-end performance on hostile channels, e.g. wireless LAN and ad-hoc wireless networks, and put severe demands on the performance of compression and error control coding.This research is developing advanced coding and signal processing algorithmsfor the transmission of images and video over wireless networks. Theinvestigator is studying two dominant approaches to joint source-channelcoding, namely, with algebraic codes and with multiple-description codes,in order to capture the efficiency of the former and the robustness of thelatter with an integrated approach. Concurrent work in receiver-sidesignal processing is producing algorithms that will enhance the performance underexisting systems and standards.