应电子信息工程学院邀请，美国南方州立理工大学（Southern Polytechnic State University）杨明博士来我校做学术报告。
题目：Advanced Multimedia Coding, Processing, and Communication
Large amounts of data and limited bandwidth are always at odds for digital video streaming over Internet Protocol (IP) networks. Packets could possibly be delayed or lost. Sender-based recovery techniques for packet loss generate redundant information that causes lower compression ratio and consumes additional bandwidth. In order to address this issue, a novel information hiding based recovery methodology has been developed. The basic idea is that the redundant information used for error recovery is embedded within the frames of the original video contents, by means of high bitrate information hiding techniques. In the receiver end, the hidden information is extracted for lost-packet recovery. Experimental results show that the damaged macroblocks can be recovered with a higher quality using the proposed methodology, as compared to spatial extrapolation used in H.264/AVC reference software. The main contributions of the proposed methodology are: (1) the delivery of redundant information does not increase bandwidth requirement significantly under the same media quality, bringing out advantages in practical applications; (2) the structures of encoder and decoder do not need to be changed in the case of intra-only coding mode.
Dr. Ming Yang is currently an Associate Professor with School of Computing and Software Engineering, Southern Polytechnic State University, USA. He obtained his BS and MS degrees in Electrical Engineering from Tianjin University (China) in 1997 and 2000 respectively, and his Ph.D. degree in Computer Science from Wright State University in 2005. His research interests include Video Coding, Information Security, Multimedia Communication, and Mobile Computing. He is the author/co-author of over fifty peer-reviewed journal, conference, and book chapter publications. His publication are in prestigious journals such as International Journal of Information Security and Privacy, and IEEE Transactions. His research has been supported by US National Science Foundation and Computing Research Association. He is currently serving the Editor-in-Chief of International Journal of Monitoring and Surveillance Technology Research.