本次高水平学术交流活动由发展规划与学科建设处邀请法国国家科学研究中心Frederic Dufaux教授，与我校师生共同探讨面向更真实与沉浸式用户体验的近期影像技术发展。具体安排如下，欢迎感兴趣的师生参加。

一、主 题：Recent imaging technologies towards a more realistic and immersive user experience

二、主讲人：法国国家科学研究中心 Frederic Dufaux教授

三、时 间：2024年11月28日（周四）14:00-16:00

四、地 点：清水河校区立人楼A104

五、主持人：信息与通信工程学院 朱策教授

六、内容简介：

With advancements in technology, digital images and videos have become a part of everyday life, driving efforts to improve visual quality and user experience. One key challenge is to faithfully represent the physical world, create hyper-realistic and immersive experiences. While the human visual system can perceive a rich range of colors, brightness, and depth, current imaging technologies struggle to capture or reproduce this complexity. To address these limitations, new multimedia signal process areas have emerged, such as ultra-high-definition imaging, high dynamic range (HDR), light fields, and point clouds. However, the effective deployment of hyper-realistic video technologies entails many technical and scientific challenges.

In this talk, I will discuss a few recent research activities related to hyper-realistic and immersive imaging. I will first consider point clouds, a very promising type of representation. One major distinguishing feature of point clouds is that, unlike images, they do not have a regular structure. Moreover, they can also be very sparse. For these reasons, point cloud processing presents significant challenges. Here, I will present recent learning-based approaches for point cloud compression and quality assessment. In a second phase, I will discuss high dynamic range imaging and in particular tone mapping operators (TMO). TMOs are used to compress the dynamic range with the aim of preserving the perceptual cues of the scene. Here, I will show how we can leverage semantic information as well as contextual cues from the scene to drive a TMO in a way similar to how expert photographers retouch images.

七、主讲人简介： 

 Frederic Dufaux is a CNRS Research Director at Université Paris-Saclay, CNRS, CentraleSupélec, Laboratoire des Signaux et Systèmes (L2S, UMR 8506), where he is head of the Telecom and Networking research hub. He received his M.Sc. in physics and Ph.D. in electrical engineering from EPFL in 1990 and 1994 respectively.

Frederic is a Fellow of IEEE. He was Vice General Chair of ICIP 2014, General Chair of MMSP 2018, and Technical Program co-Chair of ICIP 2019 and ICIP 2021. He served as Chair of the IEEE SPS Multimedia Signal Processing (MMSP) Technical Committee in 2018 and 2019. He was a member of the IEEE SPS Technical Directions Board from 2018 to 2021. He was Chair of the Steering Committee of ICME in 2022 and 2023. Starting in 2025, he will serve on the Board of Governors of IEEE SPS, as VP Technical Directions. He was also a founding member and the Chair of the EURASIP Technical Area Committee on Visual Information Processing from 2015 to 2021. He was Editor-in-Chief of Signal Processing: Image Communication from 2010 until 2019. Since 2021, he is Specialty Chief Editor of the section on Image Processing in the journal Frontiers in Signal Processing.

Frederic is also on the Executive Board of Systematic Paris-Region, a European competitiveness cluster which brings together and drives an ecosystem of excellence in digital technologies and DeepTech.

He has been involved in the standardization of digital video and imaging technologies for more than 15 years, participating both in the MPEG and JPEG committees. He was co-chairman of JPEG 2000 over wireless (JPWL) and co-chairman of JPSearch. He is the recipient of two ISO awards for these contributions.

His research interests include image and video coding, 3D video, high dynamic range imaging, visual quality assessment, video surveillance, privacy protection, image and video analysis, multimedia content search and retrieval, and video transmission over wireless network. He is author or co-author of 3 books, more than 200 research publications (h-index=50, 10000+ citations) and 20 patents issued or pending.

八、主办单位：发展规划与学科建设处

承办单位：信息与通信工程学院

              发展规划与学科建设处