From Motion to Photons in 80 Microseconds: Towards Minimal Latency for Virtual and Augmented Reality

IEEE Transactions on Visualization and Computer Graphics
Peter LincolnHenry Fuchs

Abstract

We describe an augmented reality, optical see-through display based on a DMD chip with an extremely fast (16 kHz) binary update rate. We combine the techniques of post-rendering 2-D offsets and just-in-time tracking updates with a novel modulation technique for turning binary pixels into perceived gray scale. These processing elements, implemented in an FPGA, are physically mounted along with the optical display elements in a head tracked rig through which users view synthetic imagery superimposed on their real environment. The combination of mechanical tracking at near-zero latency with reconfigurable display processing has given us a measured average of 80 µs of end-to-end latency (from head motion to change in photons from the display) and also a versatile test platform for extremely-low-latency display systems. We have used it to examine the trade-offs between image quality and cost (i.e. power and logical complexity) and have found that quality can be maintained with a fairly simple display modulation scheme.

References

Nov 17, 2009·IEEE Transactions on Visualization and Computer Graphics·Ferdi Alexander SmitBernd Froehlich

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Citations

Jul 23, 2016·IEEE Transactions on Visualization and Computer Graphics·Gaku NaritaMasatoshi Ishikawa
Jan 28, 2017·IEEE Transactions on Visualization and Computer Graphics·Matthew Regan, Gavin S P Miller
Sep 30, 2017·IEEE Transactions on Visualization and Computer Graphics·Jens GrubertJ Edward Swan
Apr 1, 2018·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Pedro J PardoÁngel Luis Pérez
May 6, 2019·Optics Express·Alessandro BoccoliniDaniele Faccio
Oct 30, 2020·Optics Express·Kohei SuzukiHiromasa Oku

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