报告人：林嘉文教授，台湾清华大学

报告题目：Stereo Video Retargeting: Bringing the Theater Experience into Our Home

报告时间：2018年1月17日15:00-17:00

报告地点：数计学院2号楼309

Abstract: The popularity of stereo images/videos and various VR/AR display devices poses the need of resizing stereo image/video pairs. Nevertheless, traditional resizing methods like uniform scaling and cropping usually lead to annoying shape and depth distortions such as depth change and window violation. Although content-award retargeting schemers can address such problems, existing content-aware methods often incur conflicts among the requirements on shape, depth, and temporal coherency preservation, thereby failing to meet one or more of these requirements. This can significantly degrade the quality of experience when watching at 3D movie at home. In this seminar, we will introduce our recent results on how to simultaneously avoid shape and depth distortions as well as maintain the temporal coherency of shape and depth while resizing a stereo image/video to a desired size. Different from the existing methods, our method effectively avoids the conflicts among depth, shape and temporal-coherency requirements by relaxing the resizing constraints on those regions in a 3D scene that cannot be perceived by human eyes to maintain the temporal coherency of the remaining regions. Based on this new finding, our method employs depth information to derive effective temporal-coherency constraints so as to offer visually pleasing results and achieves significantly better retargeting performance than existing methods, making it possible to bring the theater experience into our home.

Speaker bio: Prof. Chia-Wen Lin received his PhD degree in Electrical Engineering from National Tsing Hua University (NTHU), Hsinchu, Taiwan in 2000. He is currently a Professor with the Department of Electrical Engineering, National Tsing Hua University, Taiwan. He is Deputy Director of the AI Research Center of NTHU and Director of the Multimedia Technology Research Center of the EECS College, NTHU. His research interests include image/video processing and video networking.

Dr. Lin is an IEEE Fellow. He is a Distinguished Lecturer of IEEE Circuits and System Society during 2018-2019. He has served as Associate Editor of IEEE Transactions on Image Processing, IEEE Transactions on Multimedia, IEEE Transactions on Circuits and Systems for Video Technology, IEEE Multimedia, and Journal of Visual Communication and Image Representation. He also served as a Steering Committee member of the IEEE Transactions on Multimedia during 2013-2015. He was Chair of the Multimedia Systems and Applications Technical Committee of the IEEE Circuits and Systems Society. He served as Technical Program Co-Chair of the IEEE ICME in 2010 and will be the TPC Chair of IEEE ICIP 2019 in Taipei. His papers won the Best Paper Award of IEEE VCIP 2015, and the Young Investigator Award of SPIE VCIP 2005.

报告人简介：林嘉文教授于2000年获得台湾清华大学博士学位，目前是台湾清华大学电机工程学系教授、该校AI研究中心副主任、该校EECS学院多媒体技术研究中心主任。研究领域是图像和视频处理以及视讯通讯。

林教授是IEEE会士、2018-2019 IEEE电路与系统学会杰出演讲者、多个期刊的副主编，包括IEEE Transactions on Image Processing, IEEE Transactions on Multimedia, IEEE Transactions on Circuits and Systems for Video Technology, IEEE Multimedia, and Journal of Visual Communication and Image Representation。林教授还担任IEEE Transactions on Multimedia 2013-2015指导委员会成员、IEEE电路与系统学会Multimedia Systems and Applications 技术委员会主席、2010 年IEEE ICME 技术委员会联合主席、将担任在台北举办的IEEE ICIP 2019程序委员会主席。此外，林教授还获得IEEE VCIP 2015最佳论文奖和SPIE VCIP 2005青年科学家奖。