Colloquium A

日時(Date) 平成30年4月23日(月)4限(15:10--16:40)
Mon. Apr. 23th, 2018, 4th Period (15:10--16:40)
場所(Location) L1
司会(Chair) 久保尋之(Hiroyuki Kubo)
講演者(Presenter) Taehyun Rhee (Associate Professor, Victoria University New Zealand)
題目(Title) Perceptually Based Lighting and Rendering for Mixed Reality
概要(Abstract) To provide a seamless mixture between the virtual and real-world objects, intensive computation and additional refinement by skillful artists are often required in films. In visual effects studio, high-resolution high dynamic range (HDR) panoramic images have been used for providing real world lighting for photo realistic rendering and composition. The seamlessness in composites is the measure of how perceivably apparent the synthetic object in the final composition is, and how indistinguishable it is from the photographed live action scene. Given that the ultimate receiver of final image is the human eye, the seamlessness of final composition is determined by the Human Visual System (HVS). We conducted psychophysical studies to observe and capture the thresholds of the HVS’s ability to perceive illumination inconsistencies between the rendered subject and the photographed scene. Then, the observed thresholds applied to provide perceptually optimized solutions for mixed and augmented reality in high visual fidelity shown in real-time. In this talk, our recent research outcomes in this context will be presented while introducing research interests in Victoria Computer Graphics. Furthermore, I will introduce a newly established entrepreneurial research initiative, Computational Media Innovation Centre (CMIC) at Victoria, fosters cutting-edge research and university-led innovation and entrepreneurship in collaboration with industry partners in animation, games, and films.
講演言語(Language) English
講演者紹介(Introduction of Lecturer) Taehyun Rhee is an Associate Professor (equivalent to a tenured full professor in US based system) of Faculty of Engineering, Deputy Director and Research Director of Computational Media Innovation Centre (CMIC) at Victoria University New Zealand, and a founder and president of Mixed Reality startup DreamFlux. He is a founder and director of the Victoria Computer Graphics (VCG) Lab and the founding member of Victoria Computer Graphics Programme established in collaboration with Weta Digital at 2012. Before joining Victoria, he was a principal researcher and a leader of Computer Graphics and Medical Physics Modeling teams in the Mixed Reality Group at SAIT (Samsung Advanced Institute of Technology) in Korea from 2008 to 2012. Also, he was a senior researcher/researcher of Research Innovation Center at Samsung Electronics from 1996 to 2003. He received his Ph.D. in Computer Science from University of Southern California in U.S.A. Taehyun Rhee's research interest is to solve scientific problems related to Computer Graphics, Computer Animation, Virtual Reality, Mixed Reality, Computer Vision, and Medical Images. His current research activities have been focused on perceptually based lighting and rendering, mixed reality rendering, immersive visualization on HMDs, realistic human body modeling and animation, and human digital content interaction. He is a chair of SIGGRAPH Asia 2018, Virtual and Augmented Reality Programme.