tailieunhanh - Báo cáo hóa học: "Research Article Joint Video Summarization and Transmission Adaptation for Energy-Efficient Wireless Video Streaming"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Joint Video Summarization and Transmission Adaptation for Energy-Efficient Wireless Video Streaming | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2008 Article ID 657032 11 pages doi 2008 657032 Research Article Joint Video Summarization and Transmission Adaptation for Energy-Efficient Wireless Video Streaming Zhu Li 1 Fan Zhai 2 and Aggelos K. Katsaggelos3 1 Department of Computing Hong Kong Polytechnic University Kowloon Hong Kong 2 DSP Systems ASP Texas Instruments Inc. Dallas TX 75243 USA 3 Department of Electrical Engineering Computer Science EECS Northwestern University Evanston IL 60208 USA Correspondence should be addressed to Zhu Li Received 13 October 2007 Accepted 25 February 2008 Recommended by Jianfei Cai The deployment of the higher data rate wireless infrastructure systems and the emerging convergence of voice video and data services have been driving various modern multimedia applications such as video streaming and mobile TV. However the greatest challenge for video transmission over an uplink multiaccess wireless channel is the limited channel bandwidth and battery energy of a mobile device. In this paper we pursue an energy-efficient video communication solution through joint video summarization and transmission adaptation over a slow fading wireless channel. Video summarization coding and modulation schemes and packet transmission are optimally adapted to the unique packet arrival and delay characteristics of the video summaries. In addition to the optimal solution we also propose a heuristic solution that has close-to-optimal performance. Operational energy efficiency versus video distortion performance is characterized under a summarization setting. Simulation results demonstrate the advantage of the proposed scheme in energy efficiency and video transmission quality. Copyright 2008 Zhu Li et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the .