Prof.Toshiaki Fujii of Nagoya University

This lecture will offer a comprehensive look into 3D imaging, exploring its input, output, and communication aspects. We define a 3D image as any visual representation designed to give humans a sense of depth and three-dimensionality. 

The lecture will cover various 3D input systems, including multi-viewpoint cameras, light field cameras, time-division acquisition methods, and coded aperture cameras. For 3D display technologies, we'll delve into different rendering approaches, such as spatial-multiplexed displays (e.g., Integral Photography, Parallax Barrier, and Lenticular displays), time-sequential displays, and layered displays.

Crucially, the effective encoding and communication of these diverse 3D inputs and outputs are essential for a seamless, "full-chain" system. In this context, Ray-Space has emerged as a promising intermediate format for such systems. This presentation will introduce a variety of input methods, discuss communication techniques utilizing Ray-Space, and showcase various output display systems.

Furthermore, we'll connect these individual components, presenting an integrated perspective on end-to-end 3D visual communication systems, including some developed in our laboratory, and offer insights into their future prospects.

Biography:

Toshiaki Fujii (Member, IEEE) received the B.E., M.E., and Dr.E. degrees in electrical engineering from The University of Tokyo, Japan, in 1990, 1992, and 1995, respectively. In 1995, he joined the Graduate School of Engineering, Nagoya University, where he is currently a Professor. From 2008 to 2010, he was with the Graduate School of Science and Engineering, Tokyo Institute of Technology. From 2019 to 2021, he was a Senior Science and Technology Policy Fellow of the Cabinet Office, Government of Japan. 

His current research interests include multidimensional signal processing, multi-camera systems, multi-view video coding and transmission, and free-viewpoint video and their applications. He is a member of the IEEE Signal Processing Society, the ISO/IEC JTC1/SC29/WG4, the WG1 (MPEG-I Visual and JPEG) Standardization Committee of Japan, the Information Processing Society of Japan, and the Institute of Image Information and Television Engineers of Japan.

Address:Japan

Professor Mehrdad Teratani of Aichi University of Technology

Plenoptic cameras, also known as light field cameras, offer a novel approach to immersive video by capturing both the intensity and direction of incoming light rays using micro-lens arrays (MLAs) positioned in front of the image sensor. Unlike traditional multi-camera rigs, plenoptic systems rely on a single sensor, avoiding reprojection errors and complex calibration, and simplifying hardware setup. These cameras support real-time depth estimation and multi-view rendering—key capabilities for 3D applications such as teleoperation, augmented/virtual reality (AR/VR), and holographic displays. Nevertheless, challenges remain, including the high cost of MLAs and the demand for sophisticated image processing pipelines involving calibration, depth estimation, and rendering. Recent advancements are exploring hybrid systems that integrate plenoptic imaging with event-based sensors to enable high-speed, low-power 3D video capture. Publicly available datasets captured with plenoptic cameras, along with open-source tools like RLC, RPVC, and RVS, are accelerating research and paving the way for next-generation immersive media systems.

Biography:

Mehrdad Teratani (Senior Member, IEEE) received his PhD degree in Information Electronics from Nagoya University, Japan, in 2004. From 2004 to 2019, he was affiliated with Nagoya University as a researcher for three years; KDDI Research as a researcher for two years; the National Institute of Information and Communications Technology (NICT) as a senior researcher for two years; and Nagoya University again as an associate professor for nine years. In January 2020, he joined the École polytechnique de Bruxelles as a professor of Light Field Video Engineering at Université Libre de Bruxelles (ULB), Belgium. Since October 2024, he has been an Associate Professor at Aichi University of Technology, Visiting Professor at Nagoya University, and a Scientific Collaborator at Université Libre de Bruxelles (ULB).

He has been actively involved in MPEG standardization since 2009, particularly in areas related to 3D Video Compression, Free-viewpoint TV, MPEG Immersive Video, and Lenslet Video Coding applications. From 2019 to 2021, he served as the co-chair of the MPEG Immersive Video (MIV) Ad-hoc Group, and since 2021 he has been the co-chair of the Lenslet Video Coding (LVC) Ad-hoc Group in ISO/IEC JTC 1/SC 29/WG 4.

He is the author or co-author of more than 150 conference and journal publications, two book chapters, and one full book. He also holds 16 granted patents. His research interests include Light Field Video Processing and Compression, and Intelligent Video Systems.