中央研究院 資訊科學研究所

We get most of our information about the world through "displays". I'll present two methods we recently worked on to expand the range of what is possible. One on passive paper, and one on an active 3D TV. Printing Reflectance Functions: We present an approach to printing the reflectance functions of an object or scene so that its appearance is modified correctly as a function of the lighting conditions when viewing the print. All effects due to the lighting variation, such as shadows, Lambertian shading, specularity, and inter-reflection can be reproduced. We achieve this ability by geometrically and photometrically controlling specular highlights on the surface of the print. The technology makes use of special "paper" and standard printing technology.

2D3D-TV: Many 3D displays show 3D to viewers wearing special glasses, while showing an incomprehensible double-image to viewers without glasses. We demonstrate a simple method that provides those with glasses a 3D experience, while viewers without glasses see a 2D image without artifacts. In addition to separate Left and Right images in each frame, we add a third image, invisible to those with glasses. In the combined view seen by those without glasses, this cancels the Right image, leaving only the Left. It turns out there are some interesting perceptual phenomena triggered by our method, and we ran some user studies to understand these. We demonstrate a prototype system using a combination of active shutter projectors and a polarizing filter.

Prof. James Davis is an Associate Professor in Computer Science at University of California Santa Cruz. He received his PhD from Stanford University in 2002, and was a senior research scientist at Honda Research Institute 2002-2004. His research areas include computer graphics, computer vision, computational photography, human computation, and ICTD. This work has resulted in over 100 peer-reviewed publications, patents, and invited talks, received an ICRA 2003 Best Vision Paper, ICCV 2009 Marr Prize and an NSF CAREER award. He was the founding director of the Center for Entrepreneurship (C4E) at University of California Santa Cruz. His teaching has twice been awarded for innovative style, including a course on the importance of technology to social entrepreneurship. He is on the advisory boards of several for-profit and non-profit organizations.