SD&A 2014 Keynote: Compressive displays: combining optical fabrication, computational... [9011-81]
This presentation was delivered at the 25th annual Stereoscopic Displays and Applications conference (3-5 February 2014) held in San Francisco, USA.
More presentation videos are available at: http://www.stereoscopic.org/2014/prog...
Compressive displays: combining optical fabrication, computational processing, and perceptual tricks to build the displays of the future
Gordon Wetzstein, MIT Media Lab. (United States) [9011-81]
In this talk, we explore modern approaches to glasses-free 3D display using compressive light field displays. In contrast to conventional technology, compressive displays aim for a joint-design of optics, electronics, and computational processing that together exploit compressibility of the presented data. For instance, multiview images or light fields show the same 3D scene from different perspectives - all these images are very similar and therefore compressible. By combining displays that use multilayer architectures or directional backlighting combined with optimal light field factorizations, limitations of existing devices, for instance resolution, depth of field, and field of view, can be overcome. In addition to light field display, we will discuss approaches to compressive super-resolution image display and compressive high dynamic range display. As with compressive light field displays, these technologies rely on multiplexing image content in time such that the visual system of a human observer combines presented patterns into a consistent 3D, high-resolution, or high-contrast image. With the invention of integral imaging and parallax barriers in the beginning of the 20th century, glasses-free 3D displays have become feasible. With rapid advances in optical fabrication, digital processing power, and computational perception, a new generation of display technology is emerging: compressive displays exploring the co-design of optical elements and computational processing while taking particular characteristics of the human visual system into account. We will review these techniques and also give an outlook on next-generation compressive light field camera technology.
BIOGRAPHY:
Gordon Wetzstein is a Research Scientist in the Camera Culture Group at the MIT Media Lab. His research interests are at the intersection of computer graphics, machine vision, optics, scientific computing, and perception. In 2006, Gordon graduated with Honors from the Bauhaus in Weimar, Germany, and received a Ph.D. in Computer Science from the University of British Columbia in 2011. His doctoral dissertation focuses on computational light modulation for image acquisition and display and won the Alain Fournier Ph.D. Dissertation Annual Award. He organized the IEEE 2012 and 2013 International Workshops on Computational Cameras and Displays, founded displayblocks.org as a forum for sharing computational display design instructions with the DIY community, and presented a number of courses on Computational Displays and Computational Photography at ACM SIGGRAPH. Gordon won the best paper award for "Hand-Held Schlieren Photography with Light Field Probes" at ICCP 2011 and a Laval Virtual Award in 2005.