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Processing & Evaluation for Screen-Content Images
时间:2018-07-04 18:15    点击:   所属单位:人工智能学院
讲座名称 Processing & Evaluation for Screen-Content Images
讲座时间 2018-07-06 10:30:00
讲座地点 主楼II-402
讲座人 Weisi Lin 教授
讲座人介绍 Weisi Lin is an active researcher in image processing, perception-based signal modelling and assessment, video compression, and multimedia communication systems. In the said areas, he has published 180+ international journal papers and 230+ international conference papers, 7 patents, 9 book chapters, 2 authored books and 3 edited books, as well as excellent track record in leading and delivering more than 10 major funded projects (with over S$7m research funding). He earned his Ph.D from King’s College, University of London. He had been the Lab Head, Visual Processing, in Institute for Infocomm Research (I2R). He is a Professor in School of Computer Science and Engineering, Nanyang Technological University, where he served as the Associate Chair (Graduate Studies) in 2013-2014.
 He is a Fellow of IEEE and IET, and an Honorary Fellow of Singapore Institute of Engineering Technologists. He has been elected as a Distinguished Lecturer in both IEEE Circuits and Systems Society (2016-17) and Asia-Pacific Signal and Information Processing Association (2012-13), and given keynote/invited/tutorial/panel talks to 20+ international conferences during the past 10 years. He has been an Associate Editor for IEEE Trans. on Image Processing, IEEE Trans. on Circuits and Systems for Video Technology, IEEE Trans. on Multimedia, IEEE Signal Processing Letters, Quality and User Experience, and Journal of Visual Communication and Image Representation. He was also the Guest Editor for 7 special issues in international journals, and chaired the IEEE MMTC QoE Interest Group (2012-2014); he has been a Technical Program Chair for IEEE Int’l Conf. Multimedia and Expo (ICME 2013), International Workshop on Quality of Multimedia Experience (QoMEX 2014), International Packet Video Workshop (PV 2015), Pacific-Rim Conf. on Multimedia (PCM 2012) and IEEE Visual Communications and Image Processing (VCIP 2017). He believes that good theory is practical, and has delivered 10 major systems and modules for industrial deployment with the technology developed.
讲座内容 Screen Content Images (SCIs) typically contain text, graphics and pictures concurrently. More and more SCIs have been generated, manipulated and transmitted with the widespread use of screen capturing and matching, virtualized screen sharing, cloud computing, multi-client communication, and virtual/augmented reality (VR/AR), as well as applications in remote education, on-line advertisement and so on. In this talk, we first demonstrate that SCIs exhibit remarkably different characteristics against natural images due to the existence of rich textual information, and therefore call for careful investigation. Then we discuss separation of textual and pictorial regions in SCIs, adaptive to text scale and orientation. Afterward, various other SCI manipulations are introduced, like compression, visual quality evaluation (including database building) and just-noticeable difference (JND) estimation.
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